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          <link:loc xlink:type="locator" xlink:href="by-20260630.xsd#by_NetGainsOnSalesOfLeases" xlink:label="by_NetGainsOnSalesOfLeases"/>
          <link:loc xlink:type="locator" xlink:href="by-20260630.xsd#by_ChiefExecutiveOfficerAndThePresidentMember" xlink:label="by_ChiefExecutiveOfficerAndThePresidentMember"/>
          <link:loc xlink:type="locator" xlink:href="by-20260630.xsd#by_ThreeMonthSofrAndSpreadAdjustmentMember" xlink:label="by_ThreeMonthSofrAndSpreadAdjustmentMember"/>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average grant date fair value, vested</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationAcquisitionRelatedCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquisition advisory expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationAcquisitionRelatedCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Acquisition-Related Cost, Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeCollateralRightToReclaimSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeCollateralRightToReclaimSecurities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Offsetting derivative positions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeCollateralRightToReclaimSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Offsetting derivative positions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_EachAnniversaryDateOfGrantVestOverThreeYearsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Each Anniversary of Grant Date Vest Over Three Years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_EachAnniversaryDateOfGrantVestOverThreeYearsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Each Anniversary Date Of Grant Vest Over Three Years [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_EachAnniversaryDateOfGrantVestOverThreeYearsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Each anniversary date of grant vest over three years.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, Equal to or Greater than 90 Days Past Due [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Greater than 90 Accruing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InlandBancorpTrustFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inland Bancorp Trust IV</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InlandBancorpTrustFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Inland Bancorp Trust Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InlandBancorpTrustFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Inland Bancorp Trust IV.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableModificationToTotalFinancingReceivablesPercent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableModificationToTotalFinancingReceivablesPercent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">% of Class of Loans and Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from short-term borrowings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Short-Term Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Proceeds from Short-term Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Charge-offs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge offs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gross charge-offs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepurchaseAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer Repurchase Agreements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepurchaseAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repurchase Agreements [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ReconciliationOfAssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reconciliation of Assets [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ReconciliationOfAssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reconciliation of Assets [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ReconciliationOfAssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reconciliation of assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CorrespondentBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Correspondent Bank</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CorrespondentBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Correspondent Bank [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CorrespondentBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Correspondent bank.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation, State or Country Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation, State or Country Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesFairValueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Held-to-maturity Securities Debt Maturities, Fair Value [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesFairValueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Fair Value, Maturity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TermModificationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Term Modification [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TermModificationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Term modification.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TermModificationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Term Modification</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Preferred Stock, Shares Issued, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, Shares issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Shares issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Balance Sheet Location</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Financial Position Location, Balance [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommercialConstructionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commercial construction.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommercialConstructionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commercial Construction [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommercialConstructionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commercial Construction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccretionOfPremiumsAndDiscountsOnAcquiredLoansNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Accretion of premiums and discounts on acquired loans, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccretionOfPremiumsAndDiscountsOnAcquiredLoansNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accretion Of Premiums And Discounts On Acquired Loans Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccretionOfPremiumsAndDiscountsOnAcquiredLoansNet_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accretion of premiums and discounts on acquired loans, net.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RequiredInvestmentInFederalHomeLoanBankConversionRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal home loan bank, required investment conversion ratio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RequiredInvestmentInFederalHomeLoanBankConversionRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Required Investment In Federal Home Loan Bank Conversion Ratio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RequiredInvestmentInFederalHomeLoanBankConversionRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ratio applied to the conversion of required investment in Federal Home Loan Bank (FHL Bank) $1 for every $ 20.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestReceivableAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest receivable and other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestReceivableAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Receivable and Other Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InlandBancorpIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Inland Bancorp, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InlandBancorpIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Inland Bancorp Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InlandBancorpIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inland Bancorp, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities, Due in one year or less, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePortfolioSegmentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing Receivable Portfolio Segment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePortfolioSegmentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Portfolio Segment [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Plan Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Plan Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Current Reporting Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Current Reporting Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Financing Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Financing Receivable [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_WatchMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Watch</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_WatchMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Watch [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_WatchMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Watch.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePercentPastDue1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Percent Past Due</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePercentPastDue1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">% of Class of Loans and Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableAmountPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash dividend declared</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableAmountPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Cash dividend declared</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableAmountPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable, Amount Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USGovernmentAgenciesDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">U.S. Government Agencies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USGovernmentAgenciesDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">US Government Agencies Debt Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 2</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and Contingent Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowHedgingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Cash Flow Hedging</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowHedgingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash Flow Hedges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowHedgingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Flow Hedging [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common stock, voting shares authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares Authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, voting shares authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Leases Future Minimum Payments Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance leases future minimum payments receivable.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year Four</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2030</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductOrServiceAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product and Service</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductOrServiceAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Product and Service [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AgencySecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Agency</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AgencySecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Agency Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans Insured or Guaranteed by Government Authorities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Insured or Guaranteed by Government Authorities [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value by Liability Class [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Period Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Period Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate, Stated Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Shell Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Shell Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherRealEstateAcquisitionThroughBusinessCombination_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Acquisition of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherRealEstateAcquisitionThroughBusinessCombination_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Real Estate Acquisition Through Business Combination</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherRealEstateAcquisitionThroughBusinessCombination_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquisitions of OREO through business combination</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Cash dividends declared on common stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends, Common Stock, Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfOperatingLeaseRightOfUseAssetAndLiabilityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Operating Lease Right-of-use Asset and Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfOperatingLeaseRightOfUseAssetAndLiabilityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Operating Lease Right Of Use Asset And Liability Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfOperatingLeaseRightOfUseAssetAndLiabilityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of operating lease right-of-use asset and liability.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestBearingDomesticDepositTimeDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestBearingDomesticDepositTimeDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestBearingDomesticDepositTimeDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest-Bearing Domestic Deposit, Time Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash and cash equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash and Cash Equivalent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Cash and Cash Equivalents, at Carrying Value, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Cash and Cash Equivalents, at Carrying Value, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonInterestRelatedIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-Interest Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonInterestRelatedIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non Interest Related Income [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonInterestRelatedIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non-Interest Income.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common stock, voting shares issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Common Stock, Shares, Issued, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, voting shares issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherRealEstateOwnedPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Real Estate Owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherRealEstateOwnedPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Real Estate Owned Portfolio Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherRealEstateOwnedPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other real estate owned portfolio segment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset Class</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Class [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeasesPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease Financing Receivables</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeasesPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Leases Portfolio Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AllocatedShareBasedCompensationExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total share-based compensation (benefit) - stock options</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AllocatedShareBasedCompensationExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allocated Share Based Compensation Expense Benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AllocatedShareBasedCompensationExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Allocated share based compensation expense (benefit).</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Right-of-Use Asset Obtained in Exchange for Operating Lease Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Right-of-use lease assets in exchange for operating lease liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLossAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLossAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Income (Loss) [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Accrued interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetValuationTechniqueExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Servicing Asset, Valuation Technique [Extensible List]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetValuationTechniqueExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Asset, Valuation Technique [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Held to maturity securities continuous unrealized loss position twelve months or longer fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancingReceivableCollateralDependentLoansAndLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral dependent loans and leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancingReceivableCollateralDependentLoansAndLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Collateral Dependent Loans And Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancingReceivableCollateralDependentLoansAndLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable collateral dependent loans and leases.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Cash paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments to Acquire Businesses, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consideration paid in cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfJuniorSubordinatedDebtOwedToUnconsolidatedSubsidiaryTrustTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Junior Subordinated Debentures by Issuance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfJuniorSubordinatedDebtOwedToUnconsolidatedSubsidiaryTrustTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Junior Subordinated Debt Owed To Unconsolidated Subsidiary Trust Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfJuniorSubordinatedDebtOwedToUnconsolidatedSubsidiaryTrustTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule junior subordinated debt owed to unconsolidated subsidiary trust.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition, Acquiree</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TradingSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TradingSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Trading, and Equity Securities, FV-NI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TradingSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Securities, Trading, and Equity Securities, FV-NI, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Exercise Price, Expired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Filer Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Filer Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivables60To89DaysPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, 60 to 89 Days Past Due [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivables60To89DaysPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">60-89 Days Past Due</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeases1_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital leases net investment in direct financing leases 1.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeases1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capital Leases Net Investment In Direct Financing Leases 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeases1_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Lease financial receivables before allowance for credits losses - loans and leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities and Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liabilities and stockholders&#8217; equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredNonImpairedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Acquired Non-impaired Loans and Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredNonImpairedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquired Non-Impaired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredNonImpairedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Acquired Non Impaired Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredNonImpairedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Acquired non-impaired loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResidentialMortgageBackedSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgage-Backed Securities; Residential</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResidentialMortgageBackedSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residential Mortgage-Backed Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recoveries</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss, Recovery</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total non-interest income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noninterest Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-interest income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Exercise Price, Exercisable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAssetFairValueNetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAssetFairValueNetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross amounts not offset in the Consolidated Statements of Financial Condition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SingleIssuerTrustPreferredSecurityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Single Issuer Trust Preferred</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SingleIssuerTrustPreferredSecurityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Single Issuer Trust Preferred Security [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SingleIssuerTrustPreferredSecurityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Single issuer trust preferred security.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Finite lived intangible assets amortization expense after year four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense After Year Four</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLossCarryforwardsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Loss Carryforwards [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Estimated Fair Values of Financial Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, by Balance Sheet Grouping [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInInsuranceAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Insurance Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInInsuranceAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase (Decrease) in Insurance Assets, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInInsuranceAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gain on death benefit on bank owned life insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hedging Relationship</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hedging Relationship [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LineOfCreditFacilityExtendedMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility, extended maturity date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LineOfCreditFacilityExtendedMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Extended Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LineOfCreditFacilityExtendedMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility extended maturity date.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average remaining amortization period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Remaining Amortization Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivables30To59DaysPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, 30 to 59 Days Past Due [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivables30To59DaysPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">30-59 Days Past Due</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PhaseOutRulesPercentageOfSubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Phase out rules percentage of subordinated debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PhaseOutRulesPercentageOfSubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Phase Out Rules Percentage Of Subordinated Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PhaseOutRulesPercentageOfSubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Phase out rules percentage of subordinated debt.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance, Goodwill</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance, Goodwill</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Goodwill, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Effective tax rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Effective Income Tax Rate Reconciliation, Percent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Effective Income Tax Rate Reconciliation, Percent, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetBackedSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset-Backed Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetBackedSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset-Backed Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities, Due after ten years, Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherInterestRateDerivativesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Interest Rate Derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherInterestRateDerivativesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Interest Rate Derivatives [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherInterestRateDerivativesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other interest rate derivatives.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnderlyingAssetClassDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Underlying Asset Class [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnderlyingAssetClassDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Underlying Asset Class</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromUSGovernmentGuaranteedLoansSold_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from US government guaranteed loans sold.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromUSGovernmentGuaranteedLoansSold_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from U.S. government guaranteed loans sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromUSGovernmentGuaranteedLoansSold_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From U S Government Guaranteed Loans Sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestBearingDomesticDepositChecking_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest-bearing checking accounts</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestBearingDomesticDepositChecking_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest-Bearing Domestic Deposit, Checking</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Issuance Costs, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProvisionForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Provision for credit losses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProvisionForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Provision for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProvisionForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustment spread Interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate During Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Floating rate of subordinated notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ShortTermLinesOfCreditAvailableForUse_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Short-term credit lines available for use</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ShortTermLinesOfCreditAvailableForUse_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short Term Lines Of Credit Available For Use</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ShortTermLinesOfCreditAvailableForUse_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Short-term line of credit available for use.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAssetFairValueGrossLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: Amounts offset in the Consolidated Statements of Financial Condition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAssetFairValueGrossLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Asset, Subject to Master Netting Arrangement, Liability Offset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentVariableInterestRateTypeExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Variable Interest Rate, Type [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonperformingFinancingReceivableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nonperforming Financial Instruments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonperformingFinancingReceivableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-accrual</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonperformingFinancingReceivableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Financing Asset, Non-accrual [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesExcludingInitialDirectCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total lease financing receivables</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesExcludingInitialDirectCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capital Leases Net Investment In Direct Financing Leases Excluding Initial Direct Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesExcludingInitialDirectCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital leases net investment in direct financing leases excluding initial direct costs.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VestingDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vesting</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VestingDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vesting [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TransferOfLandAndPremisesToAssetsHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Transfer of Land and Premises to Assets Held for Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TransferOfLandAndPremisesToAssetsHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Transfer of land and premises to assets held for sale.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TransferOfLandAndPremisesToAssetsHeldForSale_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Transfer of land and premises to assets held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net of tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of options granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermDebtPercentageBearingVariableInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Debt, Percentage Bearing Variable Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermDebtPercentageBearingVariableInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable term loan, Interest rate</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_O2025Q3DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">O 2025 Q3 dividends.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SpecialMentionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Special Mention [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings Per Share, Basic, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Basic earnings per common share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Held-to-maturity Securities, Gross Unrealized Gains</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of shares outstanding</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Number of Shares, Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived1_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital leases net investment in direct financing leases minimum payments to be received 1.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net minimum lease payments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived1_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Capital Leases Net Investment In Direct Financing Leases Minimum Payments To Be Received 1, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssued1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revolving Credit Facility [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinitelivedIntangibleAssetsAcquired1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additions</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfEquitySecuritiesFvNi_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sales of equity securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfEquitySecuritiesFvNi_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Sale of Equity Securities, FV-NI</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_MetropolitanStatutoryTrustOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Metropolitan statutory trust one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingOtherSignificantReconcilingItemConsolidatedAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less:</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments to reconcile net income to net cash from operating activities:</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HedgingDesignationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hedging Designation [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HedgingDesignationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hedging Designation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends record date</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing Receivable Allowance For Credit Losses [Line Items]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Leases Future Minimum Payments Receivable Remainder Of Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance leases future minimum payments receivable remainder of fiscal year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remainder of 2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities Debt Maturities, Fair Value [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidationItemsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidation Items [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">STOCKHOLDERS&#8217; EQUITY</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitySmallBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Small Business</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedInterestRateSwapTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fixed Interest Rate Swap Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedInterestRateSwapTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fixed interest rate swap two.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HedgingDesignationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hedging Designation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HedgingDesignationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hedging Designation [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SingleFamilyResidence1stLienMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Single family residence (1st lien).</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AgencyResidentialMortgageBackedSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Agency, Residential Mortgage-Backed Securities</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentDeferralMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment Deferral [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TwoThousandTwentySubordinateNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Subordinate Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TwoThousandTwentySubordinateNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand twenty subordinate notes member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intrinsic Value, Exercised</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due After Year Four</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessee operating lease liability payments due after year four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Asset Fair Value Offset Against Collateral Net of Not Subject to Master Netting Arrangement Policy Election 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection1_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative asset fair value offset against collateral net of not subject to master netting arrangement policy election 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection1_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net credit exposure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-Based Compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization, Consolidation and Presentation of Financial Statements [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SubordinatedNotesAndJuniorSubordinatedDebtOwedToUnconsolidatedSubsidiaryTrustTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subordinated Notes and Junior Subordinated Debentures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SubordinatedNotesAndJuniorSubordinatedDebtOwedToUnconsolidatedSubsidiaryTrustTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subordinated Notes And Junior Subordinated Debt Owed To Unconsolidated Subsidiary Trust [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SubordinatedNotesAndJuniorSubordinatedDebtOwedToUnconsolidatedSubsidiaryTrustTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Subordinated notes and junior subordinated debt owed to unconsolidated subsidiary trust.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hedges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeasesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Leases [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_O2026Q3DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">O 2026 Q3 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_O2026Q3DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">O 2026 Q3 Dividends.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_O2026Q3DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">O 2026 Q3 Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SummaryOfLoansWithModifiedTermsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of Loans with Modified Terms [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SummaryOfLoansWithModifiedTermsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Loans with Modified Terms [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SummaryOfLoansWithModifiedTermsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Loans with Modified Terms</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee Lease Description [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Lease, Description [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Amendment Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TimeDepositsLessThan250000_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Time deposits (below $250,000)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TimeDepositsLessThan250000_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Time Deposits Less Than250000</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TimeDepositsLessThan250000_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Time deposits less than 250000.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeSecuritiesTaxable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest on securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeSecuritiesTaxable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income, Securities, Operating, Taxable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrealized holding gains (losses) arising during the period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductsAndServicesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product and Service</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductsAndServicesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Product and Service [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationAcquiredReceivablesFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationAcquiredReceivablesFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Acquired Receivable, Purchased without Credit Deterioration, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Held To Maturity Securities [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Held-to-Maturity Securities [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesFederalHomeLoanBankAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed liabilities federal home loan bank advances.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesFederalHomeLoanBankAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Liabilities Federal Home Loan Bank Advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesFederalHomeLoanBankAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Home Loan Bank advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AggregateSharesInOffering_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Aggregate Shares in Offering</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AggregateSharesInOffering_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Aggregate shares in offering.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AggregateSharesInOffering_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate shares in offering</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">LIABILITIES AND STOCKHOLDERS&#8217; EQUITY</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities and Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseSubordinatedNotesAndDebentures_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subordinated notes and debentures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseSubordinatedNotesAndDebentures_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Subordinated Notes and Debentures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Entity Address, Postal Zip Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Postal Zip Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InterestExpenseOtherBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Interest recorded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InterestExpenseOtherBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other borrowings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InterestExpenseOtherBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense Other Borrowings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InterestExpenseOtherBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest expense other borrowings.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by operating activities</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubstandardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Substandard</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubstandardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Substandard [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings per share - basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Pro Forma Information, Pro Forma Earnings Per Share, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingCodmProfitLossMeasureHowUsedDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableNonaccrualNoAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Nonaccrual, No Allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableNonaccrualNoAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-accrual loans without allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Exercise of Option, Tax Benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax benefit from exercise of stock options</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HedgingRelationshipDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hedging Relationship</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Year Three</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Available For Sale Securities [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FirstEvanstonBancorpIncStockIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">FEB Plan</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FirstEvanstonBancorpIncStockIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Evanston Bancorp, Inc. stock incentive plan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccruedInterestPayableAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest payable and other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccruedInterestPayableAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Interest Payable And Other Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccruedInterestPayableAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accrued interest payable and other liabilities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral posted</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_IncreaseDecreaseInAccruedInterestReceivableAndOtherAssetsNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Accrued interest receivable and other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_IncreaseDecreaseInAccruedInterestReceivableAndOtherAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Accrued Interest Receivable And Other Assets Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_IncreaseDecreaseInAccruedInterestReceivableAndOtherAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase (decrease) in accrued interest receivable and other assets.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationDiscountPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Purchased with Credit Deterioration, Discount (Premium)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Contractual rate</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line One</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of fair value of the total stock return performance-based awards granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MarketableSecuritiesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Marketable Securities [Table]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OwnerOccupiedCommercialMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Owner occupied commercial.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FirstAnniversaryOfGrantDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First anniversary of grant date.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BankServicingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bank Servicing [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Assets Measured at Fair Value on Non-Recurring Basis, Excluding Acquired Impaired Loans</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditDerivativesContractTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Derivatives Contract Type</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_WealthManagementAndTrustIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Wealth Management And Trust Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_WealthManagementAndTrustIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Wealth management and trust income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Unrealized Loss Position</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BYBPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">BYB Plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BYBPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">B Y B Plan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BYBPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">BYB plan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge offs, Prior</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Purchases of securities available-for-sale</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Sale of Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gain (Loss) on Sale of Investments, Total</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Individually evaluated for impairment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Individually Evaluated for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxesPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Taxes Paid, Net</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Modified in Period, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total modified loans and leases</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Central Index Key</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDepositMaturitiesAfterYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrimeRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prime Rate</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilityFairValueNetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross amounts not offset in the Consolidated Statements of Financial Condition</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestBearingDepositsInBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest bearing deposits with other banks</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InlandBancorpTrustThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Inland Bancorp Trust III.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancingReceivableAllowanceForLoansAndLossesIndividuallyEvaluatedForImpairment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Allowance For Loans And Losses Individually Evaluated For Impairment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancingReceivableAllowanceForLoansAndLossesIndividuallyEvaluatedForImpairment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable allowance for loans and losses individually evaluated for impairment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ConversionCalculationPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conversion calculation percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ConversionCalculationPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conversion Calculation Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ConversionCalculationPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Conversion calculation percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BankTermFundingProgramMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bank term funding program.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BankTermFundingProgramMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bank Term Funding Program [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BankTermFundingProgramMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bank Term Funding Program</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetIncludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill and other intangible assets, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetIncludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Intangible Assets, Net (Including Goodwill)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetIncludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Intangible Assets, Net (Including Goodwill), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Antidilutive weighted average shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommonStockSharesPurchasedInOffering_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Shares Purchased in Offering</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommonStockSharesPurchasedInOffering_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock shares purchased in offering.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommonStockSharesPurchasedInOffering_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares purchased in offering</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Changes in fair value of servicing assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupClassificationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disposal Group Classification</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupClassificationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Classification [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Impairment of Long-Lived Assets to be Disposed of</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impairment charge on assets held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Impairment loss on assets held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common stock, voting par value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Par or Stated Value Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, voting par value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankAdvancesFixedInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal home loan bank advances, Fixed interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankAdvancesFixedInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Home Loan Bank Advances Fixed Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankAdvancesFixedInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fixed interest rate of advances made and reported by Federal Home Loan Bank (FHLBank).</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other comprehensive income (loss), net of tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other comprehensive income, net of tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total other comprehensive income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred tax assets, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Asset Acquired, Deferred Tax Asset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesInitialDirectCosts1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Initial direct costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesInitialDirectCosts1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Initial direct costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesInitialDirectCosts1_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital leases net investment in direct financing leases initial direct costs 1.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesInitialDirectCosts1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capital Leases Net Investment In Direct Financing Leases Initial Direct Costs 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Tranche One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Payment Arrangement, Tranche One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Threshold performance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">LIABILITIES</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeWeightedAverageReceiveRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average receive rates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeWeightedAverageReceiveRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Weighted Average Receive Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeWeightedAverageReceiveRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative weighted average receive rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Right-of-Use Asset, Periodic Reduction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Right-of-use assets exchanged for operating lease liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayments of short-term borrowings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Short-Term Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfShortTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Repayments of Short-term Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Credit Quality Indicator [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing Receivable Recorded Investment [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Remaining Contractual Term (in Years)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueEquityToOrFromLevelThreeTransfersAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value, equity, to or from level 3 transfers, amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueEquityToOrFromLevelThreeTransfersAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Equity To Or From Level Three Transfers Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueEquityToOrFromLevelThreeTransfersAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value equity to or from level three transfers amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities available-for-sale, amortized cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Available-for-sale Securities, Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Amortized cost basis of the closed portfolios of available-for-sale securities used in the hedging relationship</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PublicFundDepositsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Public Fund Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PublicFundDepositsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Public Fund Deposits [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PublicFundDepositsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Public fund deposits.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Held to maturity securities continuous unrealized loss position less than 12 months accumulated loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Held to maturity securities continuous unrealized loss position less than 12 months accumulated loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Available-for-sale Securities, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Available-for-sale Securities, Fair Value, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Securities available-for-sale, at fair value (amortized cost at June 30, 2026 - $1,743,352 December 31, 2025 - $1,516,376)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">NON-INTEREST INCOME</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noninterest Income [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfAcquisitionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net amortization of other acquisition accounting adjustments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfAcquisitionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Acquisition Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_EmployeeServiceShareBasedCompensationTaxBenefitExpenseFromCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income tax benefit (expense)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_EmployeeServiceShareBasedCompensationTaxBenefitExpenseFromCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Service Share Based Compensation Tax Benefit Expense From Compensation Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_EmployeeServiceShareBasedCompensationTaxBenefitExpenseFromCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee service share based compensation tax benefit expense from compensation expense.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TimeDeposits250000OrMore_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Time deposits ($250,000 and above)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TimeDeposits250000OrMore_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Time Deposits250000 Or More</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TimeDeposits250000OrMore_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Time deposits 250000 or more.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock upon exercise of stock options, net shares</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of options exercised</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfGoodwillAndIntangibleAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Goodwill And Intangible Assets [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfGoodwillAndIntangibleAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Goodwill And Intangible Assets [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfGoodwillAndIntangibleAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of Goodwill and Intangible Assets [Line Items],</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessAcquisitionOptionToAcquireCommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Option to acquire common stock value</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessAcquisitionOptionToAcquireCommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business acquisition option to acquire common stock value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_UnpaidPrincipalBalanceOfPurchasedCreditDeteriorationLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unpaid Principal Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_UnpaidPrincipalBalanceOfPurchasedCreditDeteriorationLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unpaid Principal Balance of Purchased Credit Deterioration Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_UnpaidPrincipalBalanceOfPurchasedCreditDeteriorationLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Unpaid principal balance of purchased credit deterioration loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Disclosure [Abstract]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additions, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalReserveBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Federal Reserve Bank.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalReserveBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Reserve Bank [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalReserveBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Reserve Bank</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EstimateOfFairValueFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimate of Fair Value Measurement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EstimateOfFairValueFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Estimate of Fair Value Measurement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Derivative notional amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notional Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Notional Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableCommitmentsFixedRates_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableCommitmentsFixedRates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans and Leases Receivable, Commitments, Fixed Rates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current Fiscal Year End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Fiscal Year End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Long-Term Debt Instruments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnSalesOfOtherRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gains (Losses) on Sales of Other Real Estate</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeMaturityDatesEndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative maturity date, end year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeMaturityDatesEndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Maturity Dates End Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeMaturityDatesEndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative maturity dates end year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentQuarterlyReport_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Quarterly Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentQuarterlyReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Quarterly Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReceivablesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Receivables [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CustomerRelationshipsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer Relationships</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CustomerRelationshipsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Customer Relationships [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value By Balance Sheet Grouping [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, by Balance Sheet Grouping [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, State or Province</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, State or Province</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Number of shares, beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Number of shares, ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsNotExpectedToBeCollectedAtAcquisition_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimate of contractual cash flows not expected to be collected(1)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsNotExpectedToBeCollectedAtAcquisition_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of cash flows not expected to be collected at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsNotExpectedToBeCollectedAtAcquisition_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired In Transfer Accounted For As Debt Securities Acquired During Period Cash Flows Not Expected To Be Collected At Acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InformationTechnologyAndDataProcessing_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Information Technology and Data Processing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InformationTechnologyAndDataProcessing_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Data processing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedInterestRateSwapOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fixed Interest Rate Swap One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedInterestRateSwapOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fixed interest rate swap one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedInterestRateSwapOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed Interest Rate Swaps Effective in May 2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Fair Value and Gross Contractual Amounts Receivable and Respective Expected Contractual Cash Flows</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Table Text Block]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Preferred Stock, Shares Outstanding, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Preferred Stock, Shares Outstanding, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, Shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Comprehensive Income (Loss), Net of Tax, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Comprehensive income</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonAccrualLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non accrual loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonAccrualLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non Accrual Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities, Gross Unrealized Gains</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate [Line Items]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit Facility, Lender</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Transaction Cost, Excluding Separately Recognized Transaction</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SegmentNetInterestIncomeAndNoninterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Segment net interest income and noninterest income.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SegmentNetInterestIncomeAndNoninterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Segment net interest income and noninterest income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InternalCreditAssessmentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Internal Credit Assessment</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfEquityMethodInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Sale of Equity Method Investments</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalReserveBankDiscountWindowBorrowing_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Reserve Bank discount window borrowing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalReserveBankDiscountWindowBorrowing_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Reserve Bank Discount Window Borrowing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalReserveBankDiscountWindowBorrowing_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Federal Reserve Bank discount window borrowing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDepositMaturitiesYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Time Deposit Maturities, Year Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDepositMaturitiesYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2030</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustment for acquired PCD loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PerformanceSharesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Performance Shares [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PerformanceSharesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Performance Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Deferred Income Tax Assets, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred tax assets, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Income Tax Assets, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LegalAuditAndOtherProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Legal, audit and other professional fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LegalAuditAndOtherProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Legal Audit And Other Professional Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LegalAuditAndOtherProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Legal, audit and other professional fees.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Held to maturity securities continuous unrealized loss position 12 months or longer accumulated loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Held to maturity securities continuous unrealized loss position 12 months or longer accumulated loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeWeightedAveragePayRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average pay rates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeWeightedAveragePayRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Weighted Average Pay Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeWeightedAveragePayRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative weighted average pay rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedRateLoanCommitmentsMaturitiesEndingYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed rate loan commitments maturity year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedRateLoanCommitmentsMaturitiesEndingYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fixed Rate Loan Commitments Maturities Ending Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedRateLoanCommitmentsMaturitiesEndingYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fixed rate loan commitments maturities ending year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Operating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputExpectedTermMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected Weighted Average Loan life</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputExpectedTermMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Expected Term [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income (Expense), after Provision for Loan Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net interest income after provision for credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnContractTermination_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net gain on termination of interest rate swap agreements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnContractTermination_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Contract Termination</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReconciliationFromSegmentTotalsToConsolidatedAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reconciliation [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReconciliationFromSegmentTotalsToConsolidatedAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reconciliation of revenue:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Number of Shares, Expired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of restricted shares, vested</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRightToReceiveCommonStockUponConversion_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination, right to receive common stock upon conversion.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRightToReceiveCommonStockUponConversion_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Right To Receive Common Stock Upon Conversion</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRightToReceiveCommonStockUponConversion_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Right to receive common stock upon conversion</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Sale of Debt Securities, Available-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Proceeds from sales of securities available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Discount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Unamortized Discount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Instrument, Unamortized Discount, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StateAndLocalJurisdictionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">State and Local Jurisdiction [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StateAndLocalJurisdictionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">State and Local Jurisdiction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableforsaleSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableforsaleSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available-for-Sale Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Income (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AOCI Attributable to Parent [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total Accumulated Other Comprehensive Income (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Net amount presented in the Consolidated Statements of Financial Condition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Derivative Liability, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets, Major Class Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AdjustmentsAndReconcilingItems1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments and Reconciling Items 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AdjustmentsAndReconcilingItems1_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Adjustments and Reconciling Items 1.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AdjustmentsAndReconcilingItems1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments and reconciling items</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockCommonShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Common, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockCommonShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, voting treasury shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfHeldToMaturitySecuritiesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Held To Maturity Securities [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfHeldToMaturitySecuritiesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CombinationTermModificationAndInterestRateReductionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Combination Term Modification and Interest Rate Reduction [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CombinationTermModificationAndInterestRateReductionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Combination term modification and interest rate reduction.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CombinationTermModificationAndInterestRateReductionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Combination Term Modification and Interest Rate Reduction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CombinationTermModificationAndInterestRateReductionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CombinationTermModificationAndInterestRateReductionMember</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total consideration paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Consideration Transferred</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total merger consideration</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SummaryOfBalancesForEachRespectiveLoanAndLeaseCategoryTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Balances For Each Respective Loan And Lease Category Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SummaryOfBalancesForEachRespectiveLoanAndLeaseCategoryTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of balances for each respective loan and lease category.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SummaryOfBalancesForEachRespectiveLoanAndLeaseCategoryTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Balances for Each Respective Loan and Lease Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Leases Future Minimum Payments Receivable In Next Twelve Months</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance leases future minimum payments receivable in next twelve months.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestBearingDepositLiabilitiesDomestic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-interest-bearing deposits</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Value, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Consideration Transferred, Equity Interest, Share Issued, Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Value of common stock consideration</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFinancialInstrumentsOwnedAndPledgedAsCollateralTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other intangible assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stated Maturity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, maturity date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities, Not due at single maturity, Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average grant date fair value, granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Instrument</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LifeInsuranceCorporateOrBankOwnedChangeInValue_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Increase in cash surrender value of bank owned life insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LifeInsuranceCorporateOrBankOwnedChangeInValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Life Insurance, Corporate or Bank Owned, Change in Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Asset, Subject to Master Netting Arrangement, before Offset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Derivative Asset, Fair Value, Gross Asset, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Derivative assets fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueOfUnvestedRestrictedStockAwards_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of unvested restricted stock awards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueOfUnvestedRestrictedStockAwards_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Of Unvested Restricted Stock Awards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueOfUnvestedRestrictedStockAwards_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value of unvested restricted stock awards.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other intangible assets amortization expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Intangible Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Amortization of Intangible Assets, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 3</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total assets acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Asset Acquired, Asset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableModifiedWeightedAverageInterestRateDecreaseFromModification_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reduction in the contractual rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableModifiedWeightedAverageInterestRateDecreaseFromModification_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrealized Gains (Losses) on Cash Flow Hedges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherRealEstateValuationAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valuation adjustments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherRealEstateValuationAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Real Estate, Valuation Adjustments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDepositMaturitiesYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Time Deposit Maturities, Year Four</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDepositMaturitiesYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedInterestRateSwapThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed Interest Rate Swaps Effective in March 2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedInterestRateSwapThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fixed Interest Rate Swap Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedInterestRateSwapThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fixed interest rate swap three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommitmentsOutstandingOnModifiedLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitments outstanding on modified loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommitmentsOutstandingOnModifiedLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments Outstanding on Modified Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommitmentsOutstandingOnModifiedLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments outstanding on modified loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalReserveBankDiscountWindowLineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Reserve Bank of Chicago Discount Window Line</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalReserveBankDiscountWindowLineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Reserve Bank Discount Window Line [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalReserveBankDiscountWindowLineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Federal reserve bank discount window line.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance, shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance, shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares, Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubleaseIncome_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: Sublease income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubleaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sublease Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubleaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sublease Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Loss Carryforwards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net operating loss carryforwards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Outstanding Loan and Lease Receivables</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">INTEREST EXPENSE</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Operating and Nonoperating [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_IncreaseDecreaseInAccruedInterestPayableAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest payable and other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_IncreaseDecreaseInAccruedInterestPayableAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Accrued Interest Payable And Other Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_IncreaseDecreaseInAccruedInterestPayableAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase (decrease) in accrued interest payable and other liabilities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">COMMITMENTS AND CONTINGENT LIABILITIES (Note 14)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Weighted average grant date fair value, beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Weighted average grant date fair value, ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted average grant date fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TwoThousandTwentySixOmnibusPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Two Thousand Twenty Six Omnibus Plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TwoThousandTwentySixOmnibusPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Six Omnibus Plan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TwoThousandTwentySixOmnibusPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two Thousand Twenty Six Omnibus Plan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OccupancyAndEquipmentExpenseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Occupancy and equipment expense, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OccupancyAndEquipmentExpenseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Occupancy And Equipment Expense Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OccupancyAndEquipmentExpenseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Occupancy and equipment expense, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SummaryOfReconciliationOfAcquiredInlandPcdLoansBetweenPurchasePriceAndParValueAtAcquisitionTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Reconciliation of Acquired Inland Pcd Loans Between Purchase Price and Par Value at Acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SummaryOfReconciliationOfAcquiredInlandPcdLoansBetweenPurchasePriceAndParValueAtAcquisitionTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Reconciliation of Acquired Inland Pcd Loans Between Purchase Price and Par Value at Acquisition [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SummaryOfReconciliationOfAcquiredInlandPcdLoansBetweenPurchasePriceAndParValueAtAcquisitionTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of reconciliation of acquired inland pcd loans between purchase price and par value at acquisition.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeLiabilityFairValueOffsetAgainstCollateralNetCreditExposureOfNotSubjectToMasterNettingArrangementPolicyElection_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net credit exposure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeLiabilityFairValueOffsetAgainstCollateralNetCreditExposureOfNotSubjectToMasterNettingArrangementPolicyElection_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Liability Fair Value Offset Against Collateral Net Credit Exposure Of Not Subject To Master Netting Arrangement Policy Election</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeLiabilityFairValueOffsetAgainstCollateralNetCreditExposureOfNotSubjectToMasterNettingArrangementPolicyElection_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative liability fair value offset against collateral net credit exposure of not subject to master netting arrangement policy election.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeLiabilityFairValueOffsetAgainstCollateralNetCreditExposureOfNotSubjectToMasterNettingArrangementPolicyElection_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Net credit exposure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Operating Lease, Liability, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Operating lease liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net lease liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collectively evaluated for impairment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Collectively Evaluated for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Interest rate spread</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Spread</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Basis Spread on Variable Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioForecastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Forecast [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioForecastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Forecast</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Short-Term Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Term Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Term loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfOtherInterestRateDerivativesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Other Interest Rate Derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfOtherInterestRateDerivativesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Other Interest Rate Derivatives Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfOtherInterestRateDerivativesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of other interest rate derivatives.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DiscountOnTheUnguaranteedPortionOfGovernmentGuaranteedLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discount on the unguaranteed portion of government guaranteed loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DiscountOnTheUnguaranteedPortionOfGovernmentGuaranteedLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Discount On The Unguaranteed Portion Of Government Guaranteed Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DiscountOnTheUnguaranteedPortionOfGovernmentGuaranteedLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Discount on the unguaranteed portion of government guaranteed loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationAmortizationAndAccretionNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Depreciation, Amortization and Accretion, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationAmortizationAndAccretionNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation and amortization of premises and equipment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationAmortizationAndAccretionNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation, Amortization and Accretion, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationAcquiredReceivablesGrossContractualAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross contractual amounts receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationAcquiredReceivablesGrossContractualAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Acquired Receivable, Purchased without Credit Deterioration, Gross Contractual Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditLossStatusAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Loss Status [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AllowanceForCreditLossesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AllowanceForCreditLossesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Allowance for credit losses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AllowanceForCreditLossesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance for Credit Losses [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccruedInterestReceivableAndOtherAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued Interest Receivable and Other Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccruedInterestReceivableAndOtherAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Interest Receivable And Other Assets [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccruedInterestReceivableAndOtherAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accrued interest receivable and other assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForOtherCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Provision for Other Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForOtherCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">PROVISION FOR CREDIT LOSSES</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeLeaseDescriptionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee Lease Description [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeLeaseDescriptionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Lease, Description [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndDividendIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total interest and dividend income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndDividendIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest and Dividend Income, Operating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndDividendIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest and dividend income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Originated, More than Five Years before Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prior</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeExpenseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net interest income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeExpenseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income (Expense), Operating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Transfers and Servicing [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableGross_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total loans and leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableGross_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total loans and leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, before Allowance for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans and leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessAcquisitionOptionToAcquireCommonStockShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Options to acquire common stock shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessAcquisitionOptionToAcquireCommonStockShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition Option To Acquire Common Stock Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessAcquisitionOptionToAcquireCommonStockShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business acquisition option to acquire common stock shares.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Realized Gain (Loss) [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and cash equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Held-to-maturity Securities, Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities held-to-maturity, at amortized cost (fair value at December 31, 2024- $605)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term Debt, Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredImpairedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquired Impaired Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredImpairedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Acquired Impaired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredImpairedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Acquired Impaired Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredImpairedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Acquired impaired loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted-average common stock outstanding (basic)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Weighted Average Number of Shares Outstanding, Basic, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationAcquiredReceivablesEstimatedCollectible_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimate of contractual cash flows expected to be collected</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationAcquiredReceivablesEstimatedCollectible_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Acquired Receivables Estimated Collectible</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationAcquiredReceivablesEstimatedCollectible_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the best estimate at the acquisition date of the contractual cash flows expected to be collected, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillAcquiredDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillAcquiredDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill, Acquired During Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementScenarioAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares vest on grant date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Expected To Vest Grants In Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation arrangement by share based payment award equity instruments other than options expected to vest grants in period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LetterAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Letter Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LetterAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Letter Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LetterAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Letter agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesAccruedExpensesAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed noncurrent liabilities accrued expenses and other liabilities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesAccruedExpensesAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noncurrent Liabilities Accrued Expenses And Other Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesAccruedExpensesAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued expenses and other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intrinsic Value, Exercisable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities Debt Maturities, Amortized Cost [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Tax effect</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Available-for-Sale Securities, Tax, Portion Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Comprehensive Income (Loss), Available-for-sale Securities, Tax, Portion Attributable to Parent, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for/(recapture of) unfunded commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_StockIssuedDuringPeriodSharesRestrictedStockAwardActivityNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Shares Restricted Stock Award Activity, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_StockIssuedDuringPeriodSharesRestrictedStockAwardActivityNet_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Stock Issued During Period Shares Restricted Stock Award Activity, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_StockIssuedDuringPeriodSharesRestrictedStockAwardActivityNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted stock activity, shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Tax effect</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccruedInterestPayableAndOtherLiabilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued Interest Payable and Other Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccruedInterestPayableAndOtherLiabilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Interest Payable And Other Liabilities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccruedInterestPayableAndOtherLiabilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accrued interest payable and other liabilities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based compensation expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">APIC, Share-Based Payment Arrangement, Increase for Cost Recognition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities sold under agreements to repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Securities Sold under Agreements to Repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Securities Sold under Agreements to Repurchase, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancingReceivableOriginatedFiveYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable originated five years before latest fiscal year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancingReceivableOriginatedFiveYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Originated Five Years Before Latest Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancingReceivableOriginatedFiveYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2021</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total stockholders&#8217; equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings per share - diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Pro Forma Information, Pro Forma Earnings Per Share, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Par or Stated Value Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, Par value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Par value per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Amounts Included in Non-Interest Income in Consolidated Statements of Operations Relating to Derivative Instruments not Designated in Hedging Relationship</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfOtherDerivativesNotDesignatedAsHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivatives Not Designated as Hedging Instruments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basis of Presentation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Basis of Accounting, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrincipalAmountOutstandingOfLoansHeldInPortfolio_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unpaid principal balances of loans serviced</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrincipalAmountOutstandingOfLoansHeldInPortfolio_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan, Held-in-Portfolio, Principal Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrincipalAmountOutstandingOfLoansHeldInPortfolio_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Principal Amount Outstanding of Loans Held-in-portfolio, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Stockholders' Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotionalAmountOfNonderivativeInstruments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notional Amount of Nonderivative Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotionalAmountOfNonderivativeInstruments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notional amount of nonderivative instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDepositMaturitiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Maturities of Time Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDepositMaturitiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Time Deposit Maturities [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Held-to-maturity Securities, Gross Unrealized Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommonStockDividendDeclaredButNotPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common dividend declared, not paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommonStockDividendDeclaredButNotPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Dividend Declared But Not Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommonStockDividendDeclaredButNotPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock dividends declared but not paid.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remainder of 2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Allowance for credit losses period increase decrease</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustment for acquired PCD loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NetAdditionsReductionsToOtherRealEstateOwned_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net additions (reductions) to Other Real Estate Owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NetAdditionsReductionsToOtherRealEstateOwned_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net additions (reductions) to Other Real Estate Owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NetAdditionsReductionsToOtherRealEstateOwned_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net additions/(reductions) to OREO</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from (Payments for) in Securities Sold under Agreements to Repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net change in securities sold under agreements to repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrustIncludingUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust Including Unamortized Discount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrustIncludingUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Principal amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrustIncludingUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total liability, at par</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrustIncludingUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Junior subordinated debenture owed to unconsolidated subsidiary trust, including unamortized discount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InternalCreditAssessmentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Internal Credit Assessment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InternalCreditAssessmentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Internal Credit Assessment [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockCommonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Treasury Stock Common</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockCommonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Common [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FirstSecurityBancorpIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First security bancorp Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FirstSecurityBancorpIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Security Bancorp Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FirstSecurityBancorpIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First Security Bancorp, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine2_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine2_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Address Line Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Measurement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosures [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferredAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consideration paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferredAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Consideration Transferred [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestIncomeOther_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other non-interest income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestIncomeOther_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noninterest Income, Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestIncomeOther_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Noninterest Income, Other, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredNonImpairedAndOriginatedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Acquired Non-Impaired and Originated Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredNonImpairedAndOriginatedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans Excluding Acquired Impaired Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredNonImpairedAndOriginatedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Acquired Non Impaired And Originated Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredNonImpairedAndOriginatedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Acquired non-impaired and originated loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialAssetsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Servicing Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialAssetsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Transfers and Servicing of Financial Assets [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_JuniorSubordinatedDebtMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Junior Subordinated Debentures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_JuniorSubordinatedDebtMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Junior Subordinated Debt [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankVariableRateAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Home Loan Bank Variable Rate Advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankVariableRateAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Federal home loan bank variable rate advances.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankVariableRateAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Home Loan Bank variable rate advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmountCovered_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans and lease receivables, net (less impaired loans at fair value)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmountCovered_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net loans and leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmountCovered_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans and Leases Receivable, Net Reported Amount, Covered</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmountCovered_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Loans and lease receivables, net (less individually evaluated loans at fair value)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoansAndLeasesReceivableCommitmentsFixedAndVariableRates_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoansAndLeasesReceivableCommitmentsFixedAndVariableRates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans And Leases Receivable Commitments Fixed And Variable Rates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoansAndLeasesReceivableCommitmentsFixedAndVariableRates_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loans and leases receivable commitments fixed and variable rates.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_EquityAndOtherSecuritiesAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity and other securities, at fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_EquityAndOtherSecuritiesAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity And Other Securities At Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_EquityAndOtherSecuritiesAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity and other securities, at fair value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Borrowings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Liabilities Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputDiscountRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discount Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputDiscountRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Discount Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capital Leases, Net Investment in Direct Financing Leases [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CapitalLeasesNetInvestmentInDirectFinancingLeasesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease financing receivables</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableExcludingAccruedInterestPurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for credit losses - loans and leases, at acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableExcludingAccruedInterestPurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Excluding Accrued Interest, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments and Hedging Activities Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AgencyCommercialMortgageBackedSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Agency, Commercial Mortgage-Backed Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AgencyCommercialMortgageBackedSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Agency Commercial Mortgage Backed Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AgencyCommercialMortgageBackedSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Agency commercial mortgage backed securities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingCodmIndividualTitleAndPositionOrGroupOrCommitteeNameExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals1_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum rental to be received in future on subleases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingOtherItemAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other segment items</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingOtherItemAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, Other Segment Item, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Plan Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Plan Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoansAndLeasesReceivableUnpaidPrincipalBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unpaid Principal Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoansAndLeasesReceivableUnpaidPrincipalBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans And Leases Receivable Unpaid Principal Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoansAndLeasesReceivableUnpaidPrincipalBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loans and leases receivable unpaid principal balance.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonInterestExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-interest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonInterestExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non Interest Expense [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonInterestExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non-interest expense.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redeemed securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Operating and Nonoperating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Expense, Operating and Nonoperating, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansInsuredOrGuaranteedByUsGovernmentAuthoritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">U.S. Government Guaranteed Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansInsuredOrGuaranteedByUsGovernmentAuthoritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Insured or Guaranteed by US Government Authorities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MutualFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mutual Funds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MutualFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mutual Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities, Due after ten years, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfInvestmentsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Investments [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfInvestmentsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Investments [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoanRestructuringModificationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Restructuring Modification [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesDeferredIncome1_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital leases net investment in direct financing leases deferred income 1.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesDeferredIncome1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capital Leases Net Investment In Direct Financing Leases Deferred Income 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesDeferredIncome1_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Unearned income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ThreeMonthSecuredOvernightFinancingRatePlusThreeTwentyTwoBasisPointsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Three Month Secured Overnight Financing Rate Plus Three Twenty Two Basis Points [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ThreeMonthSecuredOvernightFinancingRatePlusThreeTwentyTwoBasisPointsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Three month secured overnight financing rate plus three twenty two basis points.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ThreeMonthSecuredOvernightFinancingRatePlusThreeTwentyTwoBasisPointsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Three-Month Secured Overnight Financing Rate Plus 322 Basis Points</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basis of Presentation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Description and Basis of Presentation [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Junior subordinated debentures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Held to maturity securities continuous unrealized loss position less than twelve months fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FeesAndServiceChargesOnDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fees and service charges on deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FeesAndServiceChargesOnDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fees and Service Charges on Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FeesAndServiceChargesOnDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fees and service charges on deposits.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AmountOfGainLossRecognizedInOtherNonInterestIncomeIneffectivePortion_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amount of Gain (Loss) Recognized in Other Non-Interest Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AmountOfGainLossRecognizedInOtherNonInterestIncomeIneffectivePortion_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amount Of Gain Loss Recognized In Other Non Interest Income Ineffective Portion</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AmountOfGainLossRecognizedInOtherNonInterestIncomeIneffectivePortion_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of gain (loss) recognized in other non-interest income ineffective portion.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Treasury Stock, Value, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Treasury Stock, Value, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Treasury Stock, Value, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValue_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Treasury stock, at cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Liability Assumed, Liability [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfOtherRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sales of other real estate owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfOtherRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Sale of Other Real Estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfDepositsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Composition of Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfDepositsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Deposits Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfDepositsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of deposits.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year One, Originated, Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral Held</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collateral Held [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrincipalForgivenessMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Principal Forgiveness [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndDueFromBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and due from banks</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndDueFromBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash and Due from Banks</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndDueFromBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash and Due from Banks, Total</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromSalesOfAssetsHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from sales of assets held for sale.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromSalesOfAssetsHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Sales Of Assets Held For Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromSalesOfAssetsHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sales of assets held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingStandardsUpdateExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrincipalAmountOutstandingOfLoansHeldInPortfolioAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan portfolios serviced for:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrincipalAmountOutstandingOfLoansHeldInPortfolioAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan, Held-in-Portfolio, Principal Outstanding [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, City or Town</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, City or Town</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repurchase of common stock, shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of shares purchased</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Repurchased During Period, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repurchase of common stock, shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanCommitmentsPercentageBearingFixedInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan commitments fixed interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanCommitmentsPercentageBearingFixedInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Commitments Percentage Bearing Fixed Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanCommitmentsPercentageBearingFixedInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loan commitments bearing fixed interest rate, percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Loans acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_StockRepurchaseProgramPercentOfSharesAuthorizedToBeRepurchased_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Approximate percentage of shares authorized to be repurchased</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_StockRepurchaseProgramPercentOfSharesAuthorizedToBeRepurchased_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Repurchase Program Percent Of Shares Authorized To Be Repurchased</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_StockRepurchaseProgramPercentOfSharesAuthorizedToBeRepurchased_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Stock repurchase program percent of shares authorized to be repurchased.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RidgeStoneCapitalTrustIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">RidgeStone Capital Trust I</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RidgeStoneCapitalTrustIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ridge Stone Capital Trust I [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RidgeStoneCapitalTrustIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">RidgeStone capital trust I.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositLiabilitiesReclassifiedAsLoansReceivable1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Overdraft deposits reclassified as loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositLiabilitiesReclassifiedAsLoansReceivable1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deposit Liabilities Reclassified as Loans Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Reportable Segments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of reportable segment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromSalesOfOtherRealEstate_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Proceeds from sales of OREO</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromSalesOfOtherRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Sales Of Other Real Estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromSalesOfOtherRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from sales of other real estate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Name of each exchange on which registered</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Security Exchange Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Expense, Deposits, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionDateOfAcquisitionAgreement1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Date of Acquisition Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionDateOfAcquisitionAgreement1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business acquisition date of agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">NON-INTEREST EXPENSE</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noninterest Expense [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFinancingReceivablesMinimumPaymentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Minimum Annual Lease Payments for Lease Financing Receivables</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFinancingReceivablesMinimumPaymentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Financing Receivables, Minimum Payments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">INCOME BEFORE PROVISION FOR INCOME TAXES</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income before provision for income taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfServicingAssetsAtFairValueTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Activity for Servicing Assets and Related Changes in Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfServicingAssetsAtFairValueTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Servicing Assets at Fair Value [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_O2024Q4DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">O 2024 Q4 Dividends member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_O2024Q4DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">O 2024 Q4 Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_O2024Q4DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">O 2024 Q4 Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfCashFlowHedgesIncludedInAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Net Gains (Losses) Recorded in Accumulated Other Comprehensive Income (Loss) and Consolidated Statements of Operations Relating to Cash Flow and Fair Value Derivative Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OmnibusPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Omnibus Plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OmnibusPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Omnibus Plan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OmnibusPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Omnibus plan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement Input Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueInputExpectedWeightedAverageLoanLifeWeightedAverageRangeAssumptionsExpectedTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected weighted average loan life</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueInputExpectedWeightedAverageLoanLifeWeightedAverageRangeAssumptionsExpectedTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Input Expected Weighted Average Loan Life Weighted Average Range Assumptions Expected Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueInputExpectedWeightedAverageLoanLifeWeightedAverageRangeAssumptionsExpectedTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value input expected weighted average loan life weighted average range assumptions expected term.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deposits [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentIncreaseAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Increase, Accrued Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentIncreaseAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, accrued interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Amount of Gain (Loss) Recognized in OCI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrealized holding gains arising during the period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialAssetNotPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, Not Past Due [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialAssetNotPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">CASH AND CASH EQUIVALENTS, beginning of period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">CASH AND CASH EQUIVALENTS, end of period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CoreDepositsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Core Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CoreDepositsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Core Deposits [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash paid during the period for interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Paid, Excluding Capitalized Interest, Operating Activity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementBasisAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementBasisAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Basis [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amounts relating to derivative instruments, not designated in hedging relationship</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total share-based compensation - restricted stock</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Period End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Period End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Assets [member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredNonCreditDeterioratedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Acquired Non-Credit Deteriorated.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredNonCreditDeterioratedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Acquired Non-Credit Deteriorated [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AcquiredNonCreditDeterioratedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquired Non-Credit-Deteriorated</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Hierarchy and NAV</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Shares, Exercisable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommercialAndIndustrialPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commercial and Industrial</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommercialAndIndustrialPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commercial And Industrial Portfolio Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommercialAndIndustrialPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commercial and industrial portfolio segment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ATMAndInterchangeFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ATM and interchange fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ATMAndInterchangeFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">A T M And Interchange Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ATMAndInterchangeFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ATM and interchange fees.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Disposition of Property Plant Equipment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gain (Loss) on Disposition of Property Plant Equipment, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net (gains) losses on sales or disposals of premises and assets held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditLossStatusDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Loss Status [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentDescriptionOfVariableRateBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Interest Rate Spread, Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentDescriptionOfVariableRateBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, description of variable rate basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentDescriptionOfVariableRateBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Description of Variable Rate Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Financial Position [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Effect, Period of Adoption, Adjustment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative-effect adjustment (ASU 2016-13)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Asset Acquired, Asset [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_USDAGuaranteedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">USDA guaranteed loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_USDAGuaranteedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">U S D A Guaranteed Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_USDAGuaranteedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">USDA guaranteed loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ThreeMonthLondonInterbankOfferedRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Three-month LIBOR</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ThreeMonthLondonInterbankOfferedRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Three Month London Interbank Offered Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ThreeMonthLondonInterbankOfferedRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Three-month LIBOR.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CarryingValueOfPurchasedCreditDeteriorationLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carrying Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CarryingValueOfPurchasedCreditDeteriorationLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Carrying Value of Purchased Credit Deterioration Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CarryingValueOfPurchasedCreditDeteriorationLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Carrying value of purchased credit deterioration loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_IncomeTaxLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_IncomeTaxLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_IncomeTaxLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Income Tax.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ServicingAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Servicing Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ServicingAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Assets [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ServicingAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Servicing assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Realized Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VestingAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vesting</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VestingAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vesting [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessAcquisitionCashPaymentPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business Acquisition Cash Payment Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessAcquisitionCashPaymentPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition Cash Payment Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessAcquisitionCashPaymentPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash payment per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommitmentsAndContingenciesLiabilitiesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments And Contingencies Liabilities [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommitmentsAndContingenciesLiabilitiesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments And Contingencies Liabilities [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommitmentsAndContingenciesLiabilitiesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitments and contingencies liabilities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdvancesFromFederalHomeLoanBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Home Loan Bank advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdvancesFromFederalHomeLoanBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Advance from Federal Home Loan Bank</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdvancesFromFederalHomeLoanBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Advances from Federal Home Loan Banks, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NondesignatedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivatives Not Designated As Hedging Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NondesignatedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Not Designated as Hedging Instrument [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablesPeriodPastDueDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, Aging [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net increase in deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase (Decrease) in Deposits, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ThirdAnniversaryOfGrantDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Third Anniversary of Grant Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ThirdAnniversaryOfGrantDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Third Anniversary Of Grant Date [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ThirdAnniversaryOfGrantDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Third anniversary of grant date.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestBearingDomesticDepositDemand_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-interest-bearing demand deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestBearingDomesticDepositDemand_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noninterest-Bearing Domestic Deposit, Demand</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instruments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Held-to-maturity Securities, Due in one year or less, Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommitmentsAndContingenciesLiabilitiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments And Contingencies Liabilities [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommitmentsAndContingenciesLiabilitiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments And Contingencies Liabilities [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CommitmentsAndContingenciesLiabilitiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitments and contingencies liabilities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Held-to-maturity Securities, Due in one year or less, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankOwnedLifeInsurance_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed bank owned life insurance.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankOwnedLifeInsurance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Bank Owned Life Insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankOwnedLifeInsurance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bank-owned life insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash dividends declared on common stock, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Dividends, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NumberOfInvestmentSecuritiesWithUnrealizedLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment securities with unrealized losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NumberOfInvestmentSecuritiesWithUnrealizedLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Investment Securities With Unrealized Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NumberOfInvestmentSecuritiesWithUnrealizedLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of investment securities with unrealized losses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLeaseIncomeLeasePayments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Lease Income, Lease Payments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLeaseIncomeLeasePayments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating cash flows paid for operating lease</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Liability, Statement of Financial Position [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Year Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefitRelatedToVestingOfRestrictedShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net income tax benefit related to vesting of restricted shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefitRelatedToVestingOfRestrictedShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tax Cuts And Jobs Act Of2017 Incomplete Accounting Provisional Income Tax Expense Benefit Related To Vesting Of Restricted Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefitRelatedToVestingOfRestrictedShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tax cuts and jobs act of 2017 incomplete accounting provisional income tax expense (benefit) related to vesting of restricted shares.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Modified, Subsequent Default</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablesPeriodPastDueAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, Aging [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonAgencyResidentialMortgageBackedSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-Agency, Residential Mortgage-Backed Securities</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TerminatedSwaps_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Terminated swaps.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario [Domain]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FourthAmendmentRevolvingCreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fourth Amendment Revolving Credit Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FourthAmendmentRevolvingCreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fourth Amendment Revolving Credit Agreement [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DepositsAndOtherBorrowingsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deposits and Other Borrowings [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_QualifyPercentageOfSubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Qualify percentage of subordinated debt.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_QualifyPercentageOfSubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Qualify percentage of subordinated debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Finite-Lived Intangible Assets, Net, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Finite-Lived Intangible Assets, Net, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Interest Rate During Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit Facility, Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancingReceivableAllowanceForLoansAndLossesCollectivelyEvaluatedForImpairment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collectively evaluated for impairment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancingReceivableAllowanceForLoansAndLossesCollectivelyEvaluatedForImpairment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Allowance For Loans And Losses Collectively Evaluated For Impairment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancingReceivableAllowanceForLoansAndLossesCollectivelyEvaluatedForImpairment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable allowance for loans and losses collectively evaluated for impairment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtFairValueAdditions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additions, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtFairValueAdditions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Asset at Fair Value, Additions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfContractOrNotionalAmountOfOutstandingLoanAndLeaseCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Contract or Notional Amount of Outstanding Loan and Lease Commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfContractOrNotionalAmountOfOutstandingLoanAndLeaseCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Contract Or Notional Amount Of Outstanding Loan And Lease Commitments Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfContractOrNotionalAmountOfOutstandingLoanAndLeaseCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of contract or notional amount of outstanding loan and lease commitments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Loss on extinguishment of subordinated debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Extinguishment of Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gain (Loss) on Extinguishment of Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilityFairValueGrossAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: Amounts offset in the Consolidated Statements of Financial Condition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilityFairValueGrossAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Liability, Subject to Master Netting Arrangement, Asset Offset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentValuationTechniqueExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Valuation Technique [Extensible List]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentValuationTechniqueExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Valuation Technique [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_IndividuallyEvaluatedForImpairmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Individually evaluated for impairment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_IndividuallyEvaluatedForImpairmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Individually Evaluated For Impairment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_IndividuallyEvaluatedForImpairmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Individually Evaluated For Impairment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableAllowanceCovered_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableAllowanceCovered_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableAllowanceCovered_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for loan and lease losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableAllowanceCovered_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Allowance for credit losses - loans and leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableAllowanceCovered_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans and Leases Receivable, Allowance, Covered</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableAllowanceCovered_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Allowance for credit losses for held-to-maturity debt securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_WeightedAverageExtendedMaturityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Extended Maturity [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_WeightedAverageExtendedMaturityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted Aaerage extended maturity.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_WeightedAverageExtendedMaturityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Term Modification</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfInvestmentsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Investments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfInvestmentsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Investments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounting Pronouncements Recently Adopted or Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">New Accounting Pronouncements, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Future Minimum Lease Payments for Operating Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Subordinated Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Subordinated Debt, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Subordinated Debt, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subordinated notes, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subordinated Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmountAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmountAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Held-to-maturity Securities Debt Maturities, Amortized Cost [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Award vesting period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNoteTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidated Statements of Changes in Accumulated Other Comprehensive Income (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNoteTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Comprehensive Income (Loss) Note [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liabilities assumed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Liability Assumed, Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, redemption, description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Redemption, Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of principal amount redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncrementalPerformanceSharesVested_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incremental performance shares issued and vested</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncrementalPerformanceSharesVested_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation arrangement by share based payment award incremental performance shares vested.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncrementalPerformanceSharesVested_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement by Share Based Payment Award Incremental Performance Shares Vested</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CarryingReportedAmountFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carrying Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CarryingReportedAmountFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reported Value Measurement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Issuance of Long-Term Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Proceeds from Issuance of Long-Term Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from long-term borrowings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Type [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InstallmentAndOtherPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Installment and Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InstallmentAndOtherPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Installment And Other Portfolio Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InstallmentAndOtherPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Installment and other portfolio segment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldtomaturitySecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Held-to-maturity Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldtomaturitySecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Held-to-Maturity Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares, Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Common Stock, Shares, Outstanding, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Common Stock, Shares, Outstanding, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, voting shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateOwnedTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Real Estate Owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateOwnedTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Owned [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentTransitionReport_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Transition Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentTransitionReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Transition Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities held-to-maturity, fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Held-to-maturity Securities, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Held-to-maturity securities, Fair Value, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HeldToMaturitySecuritiesFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impairment charge related to acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Impairment Charges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Asset Impairment Charges, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeasesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leases</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments for Repurchase of Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repurchases of common stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LastBusinessDayOfGrantVestOverThreeYearsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Last Business Day of Grant Vest Over Three Years</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LastBusinessDayOfGrantVestOverThreeYearsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Last business day of grant vest over three years.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalReserveBankOfChicagoDiscountWindowLineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Reserve Bank of Chicago Discount Window Line</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalReserveBankOfChicagoDiscountWindowLineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Federal reserve bank of Chicago discount window line.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Cash Flows [Abstract]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SummaryOfCollateralDependentLoansAndLeasesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary Of Collateral Dependent Loans And Leases</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Option, Activity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Asset, Statement of Financial Position [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeMaturityDateStartYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative maturity date, start year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeMaturityDateStartYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Maturity Date Start Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeMaturityDateStartYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative maturity date start year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Interest Rate Swaps</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stockholders' Equity</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts and Financing Receivables [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ResidentialConstructionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residential Construction [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ResidentialConstructionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residential Construction Member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ResidentialConstructionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residential Construction</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NoncashInvestingActivitiesDueFromCounterpartiesLoansSoldNotSettled_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Noncash investing activities, due from counterparties - loans sold, not settled.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NoncashInvestingActivitiesDueFromCounterpartiesLoansSoldNotSettled_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due from counterparties - loans sold, not settled</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Changes in Restricted Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance, beginning of period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance, end of period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanServicingAssetRevaluation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan servicing asset revaluation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanServicingAssetRevaluation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Servicing Asset Revaluation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanServicingAssetRevaluation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loan servicing asset revaluation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Consolidated net income</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Intrinsic Value, Beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Intrinsic Value, Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRevolvingWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Revolving, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRevolvingWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge offs, Revolving loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInFourYears_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Leases Future Minimum Payments Receivable In Four Years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInFourYears_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance leases future minimum payments receivable in four years.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInFourYears_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2030</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingChangesAndErrorCorrectionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Changes and Error Corrections [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtAndEquitySecuritiesGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt and Equity Securities, Gain (Loss), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtAndEquitySecuritiesGainLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net losses on sales of securities available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtAndEquitySecuritiesGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt and Equity Securities, Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtAndEquitySecuritiesGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net realized gains (losses) on securities available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RidgestoneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ridgestone</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RidgestoneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ridgestone [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RidgestoneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ridgestone.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasicLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings Per Share Basic [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasicLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Intangible Assets, Net (Excluding Goodwill)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Intangible Assets, Net (Excluding Goodwill), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line Of Credit Facility [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputPrepaymentRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prepayment Speeds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MeasurementInputPrepaymentRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Input, Prepayment Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativesFairValueLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivatives Fair Value [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativesFairValueLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivatives, Fair Value [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASSETS</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ShareBasedCompensationArrangementByShareBasedPaymentAwardEarnedUnderReturnOnAverageAssetsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Period for number of shares earned under return on average assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ShareBasedCompensationArrangementByShareBasedPaymentAwardEarnedUnderReturnOnAverageAssetsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Earned Under Return On Average Assets In Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ShareBasedCompensationArrangementByShareBasedPaymentAwardEarnedUnderReturnOnAverageAssetsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation arrangement by share based payment award earned under return on average assets in period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxAuthorityNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Authority, Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InvestmentSecuritiesPledgedCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carrying amount of securities pledged as collateral</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InvestmentSecuritiesPledgedCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Securities Pledged Carrying Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InvestmentSecuritiesPledgedCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment securities pledged carrying amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Risk-free interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TwoThousandSeventeenOmnibusPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Seventeen Omnibus Plan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TwoThousandSeventeenOmnibusPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand seventeen omnibus plan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TwoThousandSeventeenOmnibusPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Two Thousand Seventeen Omnibus Plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Year Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Year Focus</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ChangeInFairValueOfEquitySecuritiesNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Change in fair value of equity securities, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HedgedAssetFairValueHedgeLastOfLayerCumulativeIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hedged Asset, Fair Value Hedge, Portfolio Layer Method, Hedged Layer, Fair Value, Cumulative Increase (Decrease)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HedgedAssetFairValueHedgeLastOfLayerCumulativeIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative basis adjustments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax1_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accumulated other comprehensive income loss cumulative changes in net gain loss from cash flow hedges effect net of tax 1.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining balance in accumulated other comprehensive income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AssessmentOfModifiedLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Assessment of modified loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AssessmentOfModifiedLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assessment of Modified Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AssessmentOfModifiedLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assessment of modified loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancingReceivableYearSixOriginatedFiveYearsBeforeCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable year six originated five years before current fiscal year writeoff.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancingReceivableYearSixOriginatedFiveYearsBeforeCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Year Six Originated Five Years Before Current Fiscal Year Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancingReceivableYearSixOriginatedFiveYearsBeforeCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge offs, 2021</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrealized Gain (Loss) on Investments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Gross Unrealized Losses and Fair Values, Aggregated by Investment Category and Length of Individual Securities Continuous Unrealized Loss Position Available-for-sale and Held to Maturity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeInstrumentsTransactionFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative instruments transaction fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeInstrumentsTransactionFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments Transaction Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeInstrumentsTransactionFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative instruments transaction fees.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset Acquired with Credit Deterioration [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans Acquired with Deteriorated Credit Quality</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAssumed1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities Assumed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAssumed1_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Total liabilities assumed from acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAssumed1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total liabilities assumed from acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SecuredOvernightFinancingRatePlusSpreadAdjustmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Secured Overnight Financing Rate Plus Spread Adjustment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SecuredOvernightFinancingRatePlusSpreadAdjustmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Secured overnight financing rate plus spread adjustment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SecuredOvernightFinancingRatePlusSpreadAdjustmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SOFR + spread adjustment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge offs, 2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unobservable Inputs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Asset, Measurement Input</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueAssetsToOrFromLevelThreeTransfersAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value, assets, to or from level 3 transfers, amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueAssetsToOrFromLevelThreeTransfersAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Assets To Or From Level Three Transfers Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueAssetsToOrFromLevelThreeTransfersAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value assets to or from level three transfers amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalReserveBankAdvancesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Reserve Bank Advances [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalReserveBankAdvancesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Reserve Bank Advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankAdvancesMaximumBorrowingCapacityAsPercentageOfAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal home loan bank advances maximum borrowing capacity as percentage of total assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankAdvancesMaximumBorrowingCapacityAsPercentageOfAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Home Loan Bank Advances Maximum Borrowing Capacity As Percentage Of Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankAdvancesMaximumBorrowingCapacityAsPercentageOfAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Federal home loan bank advances maximum borrowing capacity as percentage of total assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Stock Options Exercised</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from the exercise of stock options</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LiborMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">LIBOR [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LiborMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">LIBOR [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LiborMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">LIBOR.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueLiabilitiesToOrFromLevelThreeTransfersAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value, liabilities, to or from level 3 transfers, amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueLiabilitiesToOrFromLevelThreeTransfersAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Liabilities To Or From Level Three Transfers Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueLiabilitiesToOrFromLevelThreeTransfersAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value liabilities to or from level three transfers amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InterestBearingTimeDepositBrokered_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of time deposit brokered.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InterestBearingTimeDepositBrokered_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Bearing Time Deposit Brokered</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InterestBearingTimeDepositBrokered_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Time deposit brokered</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosures [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueAcquisitions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Acquisitions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueAcquisitions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock due to business combination ,net of issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMeasurementInputExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Measurement Input [Extensible List]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMeasurementInputExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Measurement Input [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TwoThousandTwentyFiveSubordinateNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subordinate Notes 2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TwoThousandTwentyFiveSubordinateNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two Thousand Twenty Five Subordinate Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TwoThousandTwentyFiveSubordinateNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two thousand twenty five subordinate notes member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LessorOperatingLeaseMaturityYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessor, Operating Lease Maturity Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LessorOperatingLeaseMaturityYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Operating Lease Maturity Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LessorOperatingLeaseMaturityYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor, operating lease maturity year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseAndRentalExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rental expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseAndRentalExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Leases, Rent Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseAndRentalExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Operating Leases, Rent Expense, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NumberOfSharesPurchasedThroughBusinessCombination_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of shares purchased through business combination</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NumberOfSharesPurchasedThroughBusinessCombination_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Shares Purchased Through Business Combination</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NumberOfSharesPurchasedThroughBusinessCombination_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of shares purchased</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net assets acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net assets acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PerformanceBasedRestrictedSharesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Performance-based Restricted Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PerformanceBasedRestrictedSharesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Performance Based Restricted Shares [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PerformanceBasedRestrictedSharesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Performance based restricted shares.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Line of credit facility, amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Line of Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Long-term Line of Credit, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionProFormaInformationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Pro Forma Information for Results of Operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionProFormaInformationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Pro Forma Information [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AdjustmentsAndReconcilingItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments and Reconciling Items</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AdjustmentsAndReconcilingItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Adjustments and reconciling items.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AdjustmentsAndReconcilingItems_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Adjustments and Reconciling Items, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Instrument</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueOfAssetsAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total assets acquired from acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueOfAssetsAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value of Assets Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Unrecognized stock option compensation expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrecognized compensation expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositLiabilitiesDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deposit Liabilities Disclosures [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositLiabilitiesDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Assets, Fair Value Disclosure, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ReceiveFixedInterestRateSwapsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Receive Fixed Interest Rate Swaps [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ReceiveFixedInterestRateSwapsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Receive-fixed interest rate swaps.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ReceiveFixedInterestRateSwapsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Receive-Fixed Interest Rate Swaps</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesSecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities sold under agreements to repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesSecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Liabilities Securities Sold Under Agreements to Repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesSecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed liabilities securities sold under agreements to repurchase.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash used in investing activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Investing Activity, Including Discontinued Operation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PassMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pass</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PassMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pass [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Title of each class</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Title of 12(b) Security</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Segment Reporting Information, by Segment [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_WeightedAveragePrincipalForgiveness_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Principal Forgiveness</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_WeightedAveragePrincipalForgiveness_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted average principal forgiveness.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_WeightedAveragePrincipalForgiveness_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average principal forgiveness</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SBAGuaranteedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SBA guaranteed loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SBAGuaranteedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">S B A Guaranteed Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SBAGuaranteedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">SBA guaranteed loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractualInterestRateReductionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contractual Interest Rate Reduction [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ContractualInterestRateReductionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Reduction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Instruments and Hedge Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments and Hedging Activities Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average grant date fair value, forfeited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities, Due from one to five years, Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_VariableRateLoanCommitmentsMaturitiesEndingYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable rate loan commitments maturity year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_VariableRateLoanCommitmentsMaturitiesEndingYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate Loan Commitments Maturities Ending Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_VariableRateLoanCommitmentsMaturitiesEndingYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Variable rate loan commitments maturities ending year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge offs, 2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InterestBearingDomesticDepositOtherSavings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other savings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InterestBearingDomesticDepositOtherSavings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Bearing Domestic Deposit Other Savings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InterestBearingDomesticDepositOtherSavings_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest bearing domestic deposit other savings.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Liabilities, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remainder of 2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum rental to be received in future on subleases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities, Due from one to five years, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in assets and liabilities:</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionSharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stock issued (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionSharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Price Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionSharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock issued price per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Weighted Average Exercise Price, Beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Weighted Average Exercise Price, Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed current liabilities deposits.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Time Deposits, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Time Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Time deposits</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDepositMaturitiesYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2028</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Recurring and Nonrecurring [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_EachAnniversaryDateOfGrantVestOverFourYearsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Each Anniversary of Grant Date Over Four Years</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_EachAnniversaryDateOfGrantVestOverFourYearsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Each anniversary date of grant vest over four years.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Text Block]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommercialMortgageBackedSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgage-Backed Securities; Commercial</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InterestBearingDomesticDepositMoneyMarketAndDemandAccounts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Money market demand accounts</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InterestBearingDomesticDepositMoneyMarketAndDemandAccounts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest bearing domestic deposit money market and demand accounts.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DebtIssuanceCostsAmortizationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt issuance costs, amortization period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DebtIssuanceCostsAmortizationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs Amortization Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DebtIssuanceCostsAmortizationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt issuance costs, amortization period.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NetGainLossesOnSalesAndValuationAdjustmentsOfOtherRealEstateOwned_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net (gains) losses on sales and valuation adjustments of other real estate owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement Frequency</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Frequency [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Statement Location</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading Symbol</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trading Symbol</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AvailableFederalFundsLineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available Federal Funds Line</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AvailableFederalFundsLineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available Federal Funds Line [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AvailableFederalFundsLineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available federal funds line.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockOptionPlanExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock option compensation expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockOptionPlanExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock or Unit Option Plan Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets Held For Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group, Held-for-Sale, Not Discontinued Operations [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities, Due in one year or less, Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransferOfOtherRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transfer of loans to other real estate owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransferOfOtherRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Owned, Transfer from Real Estate Owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_O2024Q41DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">O 2024 Q4 1Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_O2024Q41DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">O 2024 Q4 1Dividends member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_O2024Q41DividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">O 2024 Q4 1Dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageLoansInProcessOfForeclosureAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residential consumer mortgage loans in process of foreclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageLoansInProcessOfForeclosureAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Loans in Process of Foreclosure, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CASH FLOWS FROM FINANCING ACTIVITIES</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInDueThereafter_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInDueThereafter_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Leases Future Minimum Payments Receivable In Due Thereafter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInDueThereafter_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance leases future minimum payments receivable in due thereafter.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Simulation term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Expected term (years)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Measurements, Recurring</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Recurring [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityExTransitionPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Ex Transition Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityExTransitionPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Ex Transition Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total undiscounted lease payments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalHomeLoanBankAdvancesInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Home Loan Bank, Advances, Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalHomeLoanBankAdvancesInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Home Loan Bank, Advances, Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, Undiscounted Excess Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: Imputed interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ClassOfLoansReceivableToTotalFinancingReceivablePercent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Loans Receivable to Total Financing Receivable Percent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ClassOfLoansReceivableToTotalFinancingReceivablePercent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">% of Class of Loans and Leases, prior to default</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ClassOfLoansReceivableToTotalFinancingReceivablePercent_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Class of loans receivable to total financing receivable percent.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePortfolioSegmentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing Receivable Portfolio Segment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePortfolioSegmentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Portfolio Segment [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InlandBancorpTrustTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inland Bancorp Trust II</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InlandBancorpTrustTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Inland Bancorp Trust Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InlandBancorpTrustTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Inland Bancorp Trust II.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Liabilities Operating Lease Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed liabilities operating lease liability.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanAndLeaseRelatedExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan and lease related expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanAndLeaseRelatedExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan And Lease Related Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanAndLeaseRelatedExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loan and lease related expenses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccruedInterestReceivableOnSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Interest Receivable on Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccruedInterestReceivableOnSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accrued interest receivable on securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AccruedInterestReceivableOnSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Components</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Components [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesSubjectToMandatoryRedemptionBySettlementTermsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesSubjectToMandatoryRedemptionBySettlementTermsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other borrowings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Borrowings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRevolving_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Revolving</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRevolving_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolving Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Component</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Component [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByAssetClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset Class</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByAssetClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Class [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill and Intangible Assets Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PaycheckProtectionProgramPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Paycheck Protection Program</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PaycheckProtectionProgramPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Paycheck Protection Program Portfolio Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PaycheckProtectionProgramPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Paycheck protection program portfolio segment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanServicingRevenueNonInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Servicing Revenue Non Interest Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanServicingRevenueNonInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loan servicing revenue non interest income.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanServicingRevenueNonInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan servicing revenue</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRealizedGainLossTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Realized Gain (Loss) [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRealizedGainLossTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Proceeds From Sales and Calls of Securities Available-for-sale and Associated Gains and Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNoninterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other non-interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNoninterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Noninterest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Fair Values of Assets Acquired and Liabilities Assumed as of Acquisition Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BankOwnedLifeInsurance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bank-owned life insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BankOwnedLifeInsurance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bank Owned Life Insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfCertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalanceAndCarryingAmountTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Outstanding Balance and Carrying Amount of All Acquired Impaired Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfCertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalanceAndCarryingAmountTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Outstanding Balance And Carrying Amount Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfCertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalanceAndCarryingAmountTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of certain loans acquired in transfer not accounted for as debt securities outstanding balance and carrying amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities, Due from five to ten years, Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge offs, 2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancialAssetLessThan12MonthsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less than 12 Months</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancialAssetLessThan12MonthsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, Less Than 12 Months [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancialAssetLessThan12MonthsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financial asset, less than 12 months.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueMeasurementChangeInValuationOfInputValueDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impact to Valuation from an Increased or Higher Input Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueMeasurementChangeInValuationOfInputValueDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Change In Valuation Of Input Value Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueMeasurementChangeInValuationOfInputValueDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value measurement change in valuation of input value description.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock in connection with employee stock purchase plan, shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Employee Stock Purchase Plans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PerformanceOptionsGrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Performance options grants.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PerformanceOptionsGrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Performance Options Grants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PerformanceOptionsGrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Performance Options Grants [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Award contractual term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherInterestAndDividendIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other interest and dividend income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherInterestAndDividendIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Interest and Dividend Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation and amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation, Depletion and Amortization, Nonproduction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Depreciation, Depletion and Amortization, Nonproduction, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Loans held for sale pledged as security for borrowings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans acquired with deteriorated credit quality</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, after Allowance for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Financing Receivable, after Allowance for Credit Loss, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherCreditDerivativesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Credit Derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherCreditDerivativesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Credit Derivatives [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Maximum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividend payable date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable, Date to be Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DesignatedAsHedgingInstrumentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Derivatives Designated as Hedging Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DesignatedAsHedgingInstrumentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Designated as Hedging Instrument</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DesignatedAsHedgingInstrumentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Designated as Hedging Instrument [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockByClassTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Preferred and Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockByClassTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Stock by Class [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Exercise Price, Exercised</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Accumulated Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDepositMaturitiesYearOne_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Time Deposit Maturities, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDepositMaturitiesYearOne_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remainder of 2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Value, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Common Stock, Value, Issued, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Common Stock, Value, Issued, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Common Stock, Value, Issued, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankFixedRateAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Home Loan Bank fixed rate advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankFixedRateAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Home Loan Bank Fixed Rate Advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankFixedRateAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Federal home loan bank fixed rate advances.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalFundsPurchased_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Funds Purchased</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalFundsPurchased_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal funds purchased</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NetChangeInServicingAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net change in servicing assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NetChangeInServicingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Change In Servicing Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NetChangeInServicingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net change in servicing assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Financing Receivable Allowance For Credit Losses [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PurchaseCreditDeterioratedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Purchase Credit Deteriorated.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PurchaseCreditDeterioratedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Purchase Credit Deteriorated [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PurchaseCreditDeterioratedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchased Credit Deteriorated</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ForwardStartingInterestRateSwapsDueMarch2024Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Forward-Starting Interest Rate Swaps Due March 2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ForwardStartingInterestRateSwapsDueMarch2024Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Forward-Starting Interest Rate Swaps Due March 2024 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ForwardStartingInterestRateSwapsDueMarch2024Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Forward-starting interest rate swaps due March 2024.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge offs, 2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AvailableForSaleBasisAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available For Sale Basis Adjustments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AvailableForSaleBasisAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available for sale basis adjustments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AvailableForSaleBasisAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available for sale, Basis adjustments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeCollateralObligationToReturnSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeCollateralObligationToReturnSecurities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Offsetting derivative positions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RepaymentsOfTermLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Repayments of term loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RepaymentsOfTermLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Term Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RepaymentsOfTermLoan_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayments of term loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross gains</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Realized Gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net of tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of subordinated debt issuance cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Debt Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfGoodwillAndIntangibleAssetsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Goodwill And Intangible Assets [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfGoodwillAndIntangibleAssetsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Goodwill And Intangible Assets [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfGoodwillAndIntangibleAssetsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule Of Goodwill and Intangible Assets [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated Amortization Expense for Core Deposit Intangible and Customer Relationship Intangible Recognized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Purchased with Credit Deterioration, Amount at Purchase Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of loans at acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Fair value of loans at acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected volatility</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Expected stock price volatility</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, Shares authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Shares authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PercentageOfShareholdersEquityForWhichSecuritiesHoldingsExceedsForNoIssuerOtherThanUSGovernmentAndAgencies_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of shareholders equity for which securities holdings exceeds for no issuer other than U.S. Government and agencies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PercentageOfShareholdersEquityForWhichSecuritiesHoldingsExceedsForNoIssuerOtherThanUSGovernmentAndAgencies_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Shareholders Equity For Which Securities Holdings Exceeds For No Issuer Other Than U S Government And Agencies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PercentageOfShareholdersEquityForWhichSecuritiesHoldingsExceedsForNoIssuerOtherThanUSGovernmentAndAgencies_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of shareholders equity for which securities holdings exceeds for no issuer other than U.S. Government and agencies.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets by Major Class</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Purchased with Credit Deterioration, Amount at Par Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Par value of acquired PCD loans at acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Par value of acquired PCD loans at acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Other Borrowings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Debt [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment, Tax Withholding, Share-Based Payment Arrangement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common share withholding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lender Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lender Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnderlyingAssetClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Underlying Asset Class [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnderlyingAssetClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Underlying Asset Class</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InformationByCategoryOfDebtSecurityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Security Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InformationByCategoryOfDebtSecurityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Security Category [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInThreeYears_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Leases Future Minimum Payments Receivable In Three Years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInThreeYears_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance leases future minimum payments receivable in three years.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInThreeYears_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestBearingDepositLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest-Bearing Deposit Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestBearingDepositLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest-bearing Deposit Liabilities, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestBearingDepositLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest-bearing deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SummaryOfChangeInBalanceForAllowanceForCreditLossesUnfundedCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of change in balance for allowance for credit losses unfunded commitments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SummaryOfChangeInBalanceForAllowanceForCreditLossesUnfundedCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Change in Balance for Allowance for Credit Losses Unfunded Commitments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SummaryOfChangeInBalanceForAllowanceForCreditLossesUnfundedCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Change in Balance for Allowance for Credit Losses Unfunded Commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesAndLoansReceivableLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts Notes And Loans Receivable [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesAndLoansReceivableLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts, Notes, Loans and Financing Receivable [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Registrant Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FirstEvanstonBancorpTrustOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First Evanston Bancorp Trust I</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FirstEvanstonBancorpTrustOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Evanston Bancorp Trust One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FirstEvanstonBancorpTrustOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Evanston Bancorp Trust I.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesUnguaranteedResidualValuesOfLeasedProperty1_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital leases net investment in direct financing leases unguaranteed residual values of leased property 1.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesUnguaranteedResidualValuesOfLeasedProperty1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capital Leases Net Investment In Direct Financing Leases Unguaranteed Residual Values Of Leased Property 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesUnguaranteedResidualValuesOfLeasedProperty1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unguaranteed residual values</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfCashFlowHedgesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Cash Flow Hedges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfCashFlowHedgesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Cash Flow Hedges Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfCashFlowHedgesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of cash flow hedges.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Available-for-sale Securities, Gross Unrealized Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Additional Paid in Capital, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Additional Paid in Capital, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Additional Paid in Capital, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional paid-in capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Paid in Capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Income Loss [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income (Loss) [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfOtherComprehensiveIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Other Comprehensive Income [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AmerimarkCapitalTrustOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">AmeriMark Capital Trust I</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AmerimarkCapitalTrustOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AmeriMark Capital Trust One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AmerimarkCapitalTrustOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">AmeriMark Capital Trust I.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SOFR</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AmendedCreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amended Credit Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AmendedCreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amended Credit Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_AmendedCreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amended credit agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year Three</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">PROVISION FOR INCOME TAXES</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Expense (Benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income Tax Expense (Benefit), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Income tax expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OffBalanceSheetCreditLossLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Off-Balance-Sheet, Credit Loss, Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OffBalanceSheetCreditLossLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OffBalanceSheetCreditLossLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement Frequency</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Frequency [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Dividends, Per Share, Cash Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, cash dividends paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankAdvancesVariableInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal home loan bank advances, Variable interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankAdvancesVariableInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Home Loan Bank Advances Variable Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FederalHomeLoanBankAdvancesVariableInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Federal home loan bank advances variable interest rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInTwoYears_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Leases Future Minimum Payments Receivable In Two Years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInTwoYears_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Finance leases future minimum payments receivable in two years.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinanceLeasesFutureMinimumPaymentsReceivableInTwoYears_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodValue_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repurchase of common stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Repurchased During Period, Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repurchase of stock, value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from issuance of common stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Issuance of Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maturity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share Based Compensation Arrangement By Share Based Payment Award [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromLifeInsurancePolicies_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from bank owned life insurance death benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromLifeInsurancePolicies_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Life Insurance Policy</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DataProcessingExpensesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Data Processing Expenses [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DataProcessingExpensesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Data processing expenses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DataProcessingExpensesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Data Processing Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Entity Common Stock, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Common Stock, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USStatesAndPoliticalSubdivisionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Obligations of States, Municipalities, and Political Subdivisions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USStatesAndPoliticalSubdivisionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">US States and Political Subdivisions Debt Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByLiabilityClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liability Class [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupClassificationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disposal Group Classification</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupClassificationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Classification [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accumulated Other Comprehensive Income (Loss), Net of Tax, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income (Loss), Net of Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated other comprehensive loss, net of tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidationItemsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidation Items [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommercialRealEstatePortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commercial Real Estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommercialRealEstatePortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commercial Real Estate Portfolio Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TotalModifiedByClassMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Modified by Class [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TotalModifiedByClassMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total modified by class.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_TotalModifiedByClassMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Modified by Class</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Purchases of premises and equipment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments to Acquire Property, Plant, and Equipment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Payments to Acquire Property, Plant, and Equipment, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfUnpaidPrincipalBalanceAndCarryingValueForAcquiredNonImpairedLoansAndLeasesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Unpaid Principal Balance and Carrying Value for Acquired Non-Impaired Loans and Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfUnpaidPrincipalBalanceAndCarryingValueForAcquiredNonImpairedLoansAndLeasesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Unpaid Principal Balance And Carrying Value For Acquired Non Impaired Loans And Leases Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfUnpaidPrincipalBalanceAndCarryingValueForAcquiredNonImpairedLoansAndLeasesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of unpaid principal balance and carrying value for acquired non-impaired loans and leases.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Shares of restricted voting common stock granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of shares, granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total assets for reportable segment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Remaining Contractual Term (in Years), Exercisable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Financing Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Financing Receivable [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromInternallyFinancedSaleOfOtherRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sale of internally financed sales of OREO</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromInternallyFinancedSaleOfOtherRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Internally Financed Sale Of Other Real Estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromInternallyFinancedSaleOfOtherRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from internally financed sale of other real estate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_GainsLossesOnSalesOfOtherRealEstateAndOtherRelatedExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gains Losses On Sales Of Other Real Estate And Other Related Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_GainsLossesOnSalesOfOtherRealEstateAndOtherRelatedExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Gains (losses) on sales of other real estate and other related expenses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_GainsLossesOnSalesOfOtherRealEstateAndOtherRelatedExpenses_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net loss (gain) recognized on other real estate owned and other related expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockNoParValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred shares par value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockNoParValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, No Par Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherRealEstateAndForeclosedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Other real estate owned, beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherRealEstateAndForeclosedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Other real estate owned, ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherRealEstateAndForeclosedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Real Estate, Foreclosed Assets, and Repossessed Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherRealEstateAndForeclosedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Foreclosed real estate properties recorded as result of obtaining physical possession of property</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherRealEstateAndForeclosedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Real Estate, Foreclosed Assets, and Repossessed Assets, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Income Tax Expense (Benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Deferred Income Tax Expense (Benefit), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred tax provision (benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_WeightedAverageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_WeightedAverageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancialAsset12MonthsOrLongerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">12 Months or Longer</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancialAsset12MonthsOrLongerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, 12 Months or Longer [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FinancialAsset12MonthsOrLongerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financial asset, 12 months or longer.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesFvNiRealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in fair value of equity securities, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesFvNiRealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Securities, FV-NI, Realized Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesFvNiRealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Equity Securities, FV-NI, Realized Gain (Loss), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock, Number of Shares Issued in Transaction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares purchased in public offering price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSalesOfLoansNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net gains on sales of loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSalesOfLoansNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net gains on sales of loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSalesOfLoansNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Sales of Loans, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSalesOfLoansNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gain (Loss) on Sales of Loans, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Number of shares, vested</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Restricted shares vested</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationIntegrationRelatedCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Core system conversion expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationIntegrationRelatedCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Integration-Related Cost, Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CumulativeBasisAdjustmentAssociatedWithHedgingRelationshipAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Basis Adjustment Associated With Hedging Relationship Amortized Cost Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CumulativeBasisAdjustmentAssociatedWithHedgingRelationshipAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Cumulative basis adjustment associated with hedging relationship amortized cost basis.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CumulativeBasisAdjustmentAssociatedWithHedgingRelationshipAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative basis adjustment associated with hedging relationship</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Diluted earnings per common share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings Per Share, Diluted, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Nonaccrual</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-Accrual</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Segment Reporting Information, by Segment [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Segment Reporting Information</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsExpectedToBeCollectedAtAcquisition_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimate of contractual cash flows expected to be collected</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsExpectedToBeCollectedAtAcquisition_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsExpectedToBeCollectedAtAcquisition_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingSegmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Segments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditDerivativesByContractTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Derivatives Contract Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditDerivativesByContractTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Derivatives Contract Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities, Not due at single maturity, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">City Area Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">City Area Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted stock, at cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionsProFormaRevenue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total revenues (net interest income and non-interest income)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionsProFormaRevenue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Pro Forma Information, Pro Forma Revenue</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationAcquiredReceivablesEstimatedUncollectible_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimate of contractual cash flows not expected to be collected</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationAcquiredReceivablesEstimatedUncollectible_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Acquired Receivable, Purchased without Credit Deterioration, Contractual Cash Flow, Estimated Uncollectible</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForLoanLossesExpensed_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision/(recapture) for credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForLoanLossesExpensed_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Credit Loss, Expense (Reversal)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeEffectiveHedgesNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Effective Hedges Notional Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeEffectiveHedgesNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative effective hedges notional amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_DerivativeEffectiveHedgesNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Effective Hedges Notional Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfShortTermDebtAvailableForUseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Short-term Credit Lines Available for Use</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfShortTermDebtAvailableForUseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Short Term Debt Available For Use Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfShortTermDebtAvailableForUseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of short term debt available for use.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SubordinatedDebtInstrumentMaturityYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subordinated Debt Instrument Maturity Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SubordinatedDebtInstrumentMaturityYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Subordinated debt instrument maturity year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SubordinatedDebtInstrumentMaturityYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subordinated debt instrument maturity year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Deposits_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Deposits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ConstructionLandDevelopmentAndOtherLandPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Construction, Land Development, and Other Land</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ConstructionLandDevelopmentAndOtherLandPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Construction Land Development And Other Land Portfolio Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ConstructionLandDevelopmentAndOtherLandPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Construction, land development, and other land portfolio segment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Quarterly Financial Information [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Selected Quarterly Financial Data (unaudited)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, face amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Face Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Changes in Goodwill, Core Deposit Intangible Assets and Customer Relationship Intangible Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Intangible Assets and Goodwill [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility, maximum borrowing capacity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialAssetPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, Past Due [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialAssetPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Past Due</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueHedgingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hedging [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueHedgingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Hedges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndFeeIncomeLoansAndLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest and Fee Income, Loans and Leases, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndFeeIncomeLoansAndLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest and fees on loans and leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndFeeIncomeLoansAndLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest and Fee Income, Loans and Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndFeeIncomeLoansAndLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Interest income on non-accrual loans and leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromOtherLoansAndLeasesSold_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from other loans and leases sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromOtherLoansAndLeasesSold_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Other Loans and Leases Sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ProceedsFromOtherLoansAndLeasesSold_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from other loans and leases sold.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRevolvingConvertedToTermLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Revolving, Converted to Term Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRevolvingConvertedToTermLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Term loans converted from revolving loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRevolvingConvertedToTermLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Financing Receivable, Revolving, Converted to Term Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RiskRatingsForLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Risk ratings for loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RiskRatingsForLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Risk Ratings for Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_RiskRatingsForLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Risk ratings for loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable lease cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Lease, Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock in connection with employee stock purchase plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Employee Stock Purchase Plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSharesSubjectToMandatoryRedemptionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Shares Subject To Mandatory Redemption [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSharesSubjectToMandatoryRedemptionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instrument Subject to Mandatory Redemption [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liability, at carrying value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Junior subordinated debentures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionIntangibleAssetsAcquired1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noncash or Part Noncash Acquisition, Intangible Assets Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionIntangibleAssetsAcquired1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Value ascribed to goodwill</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average remaining life of operating leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Weighted Average Remaining Lease Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableUnamortizedLoanFeeCost_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net unamortized deferred fees and costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableUnamortizedLoanFeeCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net unamortized deferred fees and costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableUnamortizedLoanFeeCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Unamortized Loan Cost (Fee)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedToFloatingSubordinateNotesMatureOnFifteenthAugustTwoThousandThirtyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed-to-floating subordinated notes that mature on August 15, 2035</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedToFloatingSubordinateNotesMatureOnFifteenthAugustTwoThousandThirtyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fixed to Floating Subordinate Notes Mature on Fifteenth August Two Thousand Thirty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedToFloatingSubordinateNotesMatureOnFifteenthAugustTwoThousandThirtyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fixed to floating subordinate notes mature on fifteenth august two thousand thirty five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting Information [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDepositMaturitiesYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Time Deposit Maturities, Year Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDepositMaturitiesYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherDerivativesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Derivatives [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherDerivativesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other derivatives.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OtherDerivativesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total lease cost, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease, Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Derivative liabilities fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Other Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Derivative liabilities fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Liability, Subject to Master Netting Arrangement, before Offset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Derivative Liability, Fair Value, Gross Liability, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LetterOfCreditMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Letters of Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LetterOfCreditMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Letter of Credit [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Consideration Transferred, Equity Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, net (1,586,542 shares issued at $26.16 per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Premises and equipment, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Property, Plant and Equipment, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Property, Plant and Equipment, Net, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Property, Plant and Equipment, Net, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted stock activity, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueMeasurementWithUnobservableInputsReconciliationRecurringAccretionOfDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accretion of discount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueMeasurementWithUnobservableInputsReconciliationRecurringAccretionOfDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Accretion Of Discount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FairValueMeasurementWithUnobservableInputsReconciliationRecurringAccretionOfDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Accretion Of Discount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedInterestsRateSwapFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed Interest Rate Swaps Effective in September 2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedInterestsRateSwapFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fixed Interests Rate Swap Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedInterestsRateSwapFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fixed Interests Rate Swap Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amount of Net Gain Reclassified from AOCI to Income as an Increase to Net Interest Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retained Earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Reclassification adjustments for net gains included in net income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OriginatedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Originated</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OriginatedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Originated Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OriginatedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Originated loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based compensation expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Noncash Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Share-based Payment Arrangement, Noncash Expense, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments of Stock Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans Insured or Guaranteed by Government Authorities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Insured or Guaranteed by Government Authorities [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate number of shares authorized to repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Repurchase Program, Authorized, Number of Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedRateLoanCommitmentPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments to make loans period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedRateLoanCommitmentPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fixed Rate Loan Commitment Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedRateLoanCommitmentPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fixed rate loan commitment period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OffBalanceSheetCreditLossLiabilityAdjustmentForAcquiredLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Off Balance Sheet Credit Loss Liability Adjustment For Acquired Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OffBalanceSheetCreditLossLiabilityAdjustmentForAcquiredLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Off Balance Sheet Credit Loss Liability Adjustment For Acquired Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_OffBalanceSheetCreditLossLiabilityAdjustmentForAcquiredLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustment for acquired loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_Heldtomaturitysecuritiescontinuousunrealizedlosspositionnumberofpositions_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Held to maturity securities continuous unrealized loss position number of positions.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_Heldtomaturitysecuritiescontinuousunrealizedlosspositionnumberofpositions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">HeldToMaturitySecuritiesContinuousUnrealizedLossPositionNumberOfPositions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_Heldtomaturitysecuritiescontinuousunrealizedlosspositionnumberofpositions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Held to maturity securities continuous unrealized loss position number of positions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average discount rate of operating leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Weighted Average Discount Rate, Percent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Level 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForProceedsFromFederalHomeLoanBankStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments for (Proceeds from) Federal Home Loan Bank Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForProceedsFromFederalHomeLoanBankStock_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Payments for (Proceeds from) Federal Home Loan Bank Stock, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForProceedsFromFederalHomeLoanBankStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Redemptions of Federal Home Loan Bank stock, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class Of Stock [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Financing Activity, Including Discontinued Operation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by (used in) financing activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral Held</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collateral Held [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAverageRemainingMaturity1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Average Remaining Maturity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAverageRemainingMaturity1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average remaining maturity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SummaryInvestmentHoldingsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Amortized Cost and Fair Values of Securities Available-for-sale, and Held to Maturity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SummaryInvestmentHoldingsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Investment Holdings [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Lease Costs and Company's Operating Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease, Cost [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnamortizedDebtIssuanceExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unamortized debt issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnamortizedDebtIssuanceExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unamortized Debt Issuance Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockPreferredShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Treasury preferred shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockPreferredShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Preferred, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonOwnerOccupiedCommercialMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non-owner occupied commercial.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonOwnerOccupiedCommercialMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non-owner Occupied Commercial [member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonOwnerOccupiedCommercialMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-owner Occupied Commercial</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available-for-sale Securities, Due from five to ten years, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InlandBancorpTrustFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inland Bancorp Trust V</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InlandBancorpTrustFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Inland Bancorp Trust Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_InlandBancorpTrustFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Inland Bancorp Trust V.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Contract</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Contract [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Asset Acquired, Receivable, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessAcquisitionTransactionClosingDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business Acquisition Transaction Closing Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessAcquisitionTransactionClosingDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition Transaction Closing Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_BusinessAcquisitionTransactionClosingDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business acquisition transaction completion Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CorporateDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Corporate Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CorporateDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Corporate Debt Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRealEstatePropertiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Real Estate Properties [Table Text Block]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Asset Acquired, Investment in Debt and Equity Securities, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Credit agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Interactive Data Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Interactive Data Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Statement Location</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureItemAmountsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Measurement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureItemAmountsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CASH FLOWS FROM OPERATING ACTIVITIES</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonAgencySecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non-Agency Securities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonAgencySecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-Agency</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_NonAgencySecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non Agency Securities [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate, Type of Property [Axis]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ThreeMonthSecuredOvernightFinancingRatePlusFiveEightyEightBasisPointsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Three-Month Secured Overnight Financing Rate Plus Five Eighty Eight Basis Points.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stock issued (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge offs, 2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanCommitmentsPercentageBearingVariableInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan commitments variable interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanCommitmentsPercentageBearingVariableInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Commitments Percentage Bearing Variable Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_LoanCommitmentsPercentageBearingVariableInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loan commitments bearing variable interest rate, percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Dividends, Per Share, Declared</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_CumulativeEffectPeriodOfAdoptionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Effect, Period of Adoption [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CombinationTermModificationAndPaymentDelayMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Combination Term Modification and Payment Delay [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CombinationTermModificationAndPaymentDelayMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Combination term modification and payment delay.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CombinationTermModificationAndPaymentDelayMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Combination Term Modification and Payment Delay</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income tax benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Expense, Tax Benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Tax Identification Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Tax Identification Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term Debt, Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeclosedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repossessed Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeclosedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Repossessed Assets, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeclosedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other real estate owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeclosedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other real estate owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SubleaseContractExpirationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sublease contract maturity year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SubleaseContractExpirationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sublease Contract Expiration Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_SubleaseContractExpirationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sublease contract expiration period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableCommitmentsVariableRates_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableCommitmentsVariableRates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans and Leases Receivable, Commitments, Variable Rates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from maturities and calls of securities available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfInterestRateDerivativesAndOffsettingPositionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Company's Interest Rate Derivative and Offsetting Positions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfInterestRateDerivativesAndOffsettingPositionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Interest Rate Derivatives And Offsetting Positions Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ScheduleOfInterestRateDerivativesAndOffsettingPositionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of interest rate derivatives and offsetting positions.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans, Notes, Trade and Other Receivables Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan and Lease Receivables and Allowance for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxAuthorityNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Authority, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LocalPhoneNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Local Phone Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LocalPhoneNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Local Phone Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFairValueHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Derivative Financial Instruments and Classification on Consolidated Statements of Financial Condition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFairValueHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Income Loss [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income (Loss) [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Short-term lease cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Lease, Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average common stock outstanding:</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility, interest rate terms</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Interest Rate Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAcquiredFromAcquisition_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Acquired from Acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAcquiredFromAcquisition_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net cash received in acquisition of business</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total non-interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noninterest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedInterestRateSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fixed interest rate swap.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedInterestRateSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fixed Interest Rate Swap [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_FixedInterestRateSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed Interest Rate Swap</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Policies [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalHomeLoanBankAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Home Loan Bank Variable Rate Advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalHomeLoanBankAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Home Loan Bank, Advance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalHomeLoanBankAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Federal Home Loan Bank Advances, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PaymentsForOriginationsOfUSGovernmentGuaranteedLoans_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Originations of U.S. government guaranteed loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PaymentsForOriginationsOfUSGovernmentGuaranteedLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments For Originations Of U S Government Guaranteed Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_PaymentsForOriginationsOfUSGovernmentGuaranteedLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payments for originations of US government guaranteed loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CollectivelyEvaluatedForImpairmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Collectively evaluated for impairment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CollectivelyEvaluatedForImpairmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collectively Evaluated For Impairment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_CollectivelyEvaluatedForImpairmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collectively Evaluated For Impairment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total consolidated revenue</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ForwardStartingInterestRateSwapsDueAugust2024Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Forward-Starting Interest Rate Swaps Due August 2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ForwardStartingInterestRateSwapsDueAugust2024Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Forward-Starting Interest Rate Swaps Due August 2024 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="by_ForwardStartingInterestRateSwapsDueAugust2024Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Forward-starting interest rate swaps due August 2024.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Earnings Per Share Basic By Common Class [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrealized Gains (Losses) on Available-for-Sale Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Unrealized Gains (Losses) on Available-for-Sale Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResidentialPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residential Real Estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResidentialPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residential Portfolio Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Year Four</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2030</link:label>
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  <xsd:element id="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesDeferredIncome1" name="CapitalLeasesNetInvestmentInDirectFinancingLeasesDeferredIncome1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_DataProcessingExpensesMember" name="DataProcessingExpensesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FederalHomeLoanBankAdvancesMaximumBorrowingCapacityAsPercentageOfAssets" name="FederalHomeLoanBankAdvancesMaximumBorrowingCapacityAsPercentageOfAssets" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="by_ScheduleOfOperatingLeaseRightOfUseAssetAndLiabilityTableTextBlock" name="ScheduleOfOperatingLeaseRightOfUseAssetAndLiabilityTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_ScheduleOfGoodwillAndIntangibleAssetsTable" name="ScheduleOfGoodwillAndIntangibleAssetsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_WealthManagementAndTrustIncome" name="WealthManagementAndTrustIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_AmerimarkCapitalTrustOneMember" name="AmerimarkCapitalTrustOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FairValueEquityToOrFromLevelThreeTransfersAmount" name="FairValueEquityToOrFromLevelThreeTransfersAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_FederalReserveBankDiscountWindowBorrowing" name="FederalReserveBankDiscountWindowBorrowing" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_OriginatedLoansMember" name="OriginatedLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FinanceLeasesFutureMinimumPaymentsReceivable" name="FinanceLeasesFutureMinimumPaymentsReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_TimeDeposits250000OrMore" name="TimeDeposits250000OrMore" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_BYBPlanMember" name="BYBPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_AcquiredImpairedLoansMember" name="AcquiredImpairedLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesExcludingInitialDirectCosts" name="CapitalLeasesNetInvestmentInDirectFinancingLeasesExcludingInitialDirectCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_CapitalLeasesNetInvestmentInDirectFinancingLeases1" name="CapitalLeasesNetInvestmentInDirectFinancingLeases1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_FederalHomeLoanBankAdvancesFixedInterestRate" name="FederalHomeLoanBankAdvancesFixedInterestRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="by_WeightedAveragePrincipalForgiveness" name="WeightedAveragePrincipalForgiveness" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_SingleFamilyResidence1stLienMember" name="SingleFamilyResidence1stLienMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FederalReserveBankMember" name="FederalReserveBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FourthAmendmentRevolvingCreditAgreementMember" name="FourthAmendmentRevolvingCreditAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_DiscountOnTheUnguaranteedPortionOfGovernmentGuaranteedLoans" name="DiscountOnTheUnguaranteedPortionOfGovernmentGuaranteedLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_ThreeMonthSecuredOvernightFinancingRatePlusThreeTwentyTwoBasisPointsMember" name="ThreeMonthSecuredOvernightFinancingRatePlusThreeTwentyTwoBasisPointsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_OtherDerivativesMember" name="OtherDerivativesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_CumulativeBasisAdjustmentAssociatedWithHedgingRelationshipAmortizedCostBasis" name="CumulativeBasisAdjustmentAssociatedWithHedgingRelationshipAmortizedCostBasis" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_NetGainLossesOnSalesAndValuationAdjustmentsOfOtherRealEstateOwned" name="NetGainLossesOnSalesAndValuationAdjustmentsOfOtherRealEstateOwned" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_SubordinatedDebtInstrumentMaturityYear" name="SubordinatedDebtInstrumentMaturityYear" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_TwoThousandSeventeenOmnibusPlanMember" name="TwoThousandSeventeenOmnibusPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_PurchaseCreditDeterioratedMember" name="PurchaseCreditDeterioratedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ShareBasedCompensationArrangementByShareBasedPaymentAwardEarnedUnderReturnOnAverageAssetsInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEarnedUnderReturnOnAverageAssetsInPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_LetterAgreementMember" name="LetterAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_SummaryOfUnpaidPrincipalBalancesOfLoansServicedForOthersTableTextBlock" name="SummaryOfUnpaidPrincipalBalancesOfLoansServicedForOthersTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_SummaryOfLoansWithModifiedTermsTableTextBlock" name="SummaryOfLoansWithModifiedTermsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_AdjustmentsAndReconcilingItems" name="AdjustmentsAndReconcilingItems" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_ThreeMonthLondonInterbankOfferedRateMember" name="ThreeMonthLondonInterbankOfferedRateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesSecuritiesSoldUnderAgreementsToRepurchase" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesSecuritiesSoldUnderAgreementsToRepurchase" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_LegalAuditAndOtherProfessionalFees" name="LegalAuditAndOtherProfessionalFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_CorrespondentBankMember" name="CorrespondentBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FinanceLeasesFutureMinimumPaymentsReceivableInDueThereafter" name="FinanceLeasesFutureMinimumPaymentsReceivableInDueThereafter" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_O2024Q41DividendsMember" name="O2024Q41DividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_BusinessCombinationRightToReceiveCommonStockUponConversion" name="BusinessCombinationRightToReceiveCommonStockUponConversion" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_CombinationTermModificationAndInterestRateReductionMember" name="CombinationTermModificationAndInterestRateReductionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FinanceLeasesFutureMinimumPaymentsReceivableInThreeYears" name="FinanceLeasesFutureMinimumPaymentsReceivableInThreeYears" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_LoansAndLeasesReceivableCommitmentsFixedAndVariableRates" name="LoansAndLeasesReceivableCommitmentsFixedAndVariableRates" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_NonInterestRelatedIncomeMember" name="NonInterestRelatedIncomeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_PerformanceOptionsGrantsMember" name="PerformanceOptionsGrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FairValueMeasurementWithUnobservableInputsReconciliationRecurringAccretionOfDiscount" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringAccretionOfDiscount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_EquityAndOtherSecuritiesAtFairValue" name="EquityAndOtherSecuritiesAtFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_SBAGuaranteedLoansMember" name="SBAGuaranteedLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_PublicFundDepositsMember" name="PublicFundDepositsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ThreeMonthSofrAndSpreadAdjustmentMember" name="ThreeMonthSofrAndSpreadAdjustmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FinancingReceivableYearSixOriginatedFiveYearsBeforeCurrentFiscalYearWriteoff" name="FinancingReceivableYearSixOriginatedFiveYearsBeforeCurrentFiscalYearWriteoff" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_CommercialAndIndustrialPortfolioSegmentMember" name="CommercialAndIndustrialPortfolioSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_CarryingValueOfPurchasedCreditDeteriorationLoans" name="CarryingValueOfPurchasedCreditDeteriorationLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_ReceiveFixedInterestRateSwapsMember" name="ReceiveFixedInterestRateSwapsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FixedInterestRateSwapOneMember" name="FixedInterestRateSwapOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ScheduleOfGoodwillAndIntangibleAssetsLineItems" name="ScheduleOfGoodwillAndIntangibleAssetsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection1" name="DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_DepositsAndOtherBorrowingsMember" name="DepositsAndOtherBorrowingsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_DerivativeEffectiveHedgesNotionalAmount" name="DerivativeEffectiveHedgesNotionalAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_TimeDepositsLessThan250000" name="TimeDepositsLessThan250000" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_SingleIssuerTrustPreferredSecurityMember" name="SingleIssuerTrustPreferredSecurityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_SecuredOvernightFinancingRatePlusSpreadAdjustmentMember" name="SecuredOvernightFinancingRatePlusSpreadAdjustmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_TransferOfLandAndPremisesToAssetsHeldForSale" name="TransferOfLandAndPremisesToAssetsHeldForSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_NonAgencyResidentialMortgageBackedSecuritiesMember" name="NonAgencyResidentialMortgageBackedSecuritiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ProceedsFromPaydownsOfSecuritiesAvailableForSale" name="ProceedsFromPaydownsOfSecuritiesAvailableForSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_ScheduleOfOtherInterestRateDerivativesTableTextBlock" name="ScheduleOfOtherInterestRateDerivativesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_AggregateSharesInOffering" name="AggregateSharesInOffering" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="by_NetAdditionsReductionsToOtherRealEstateOwned" name="NetAdditionsReductionsToOtherRealEstateOwned" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrustIncludingUnamortizedDiscount" name="JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrustIncludingUnamortizedDiscount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_FixedInterestRateSwapThreeMember" name="FixedInterestRateSwapThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_O2026Q3DividendsMember" name="O2026Q3DividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ScheduleOfCertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalanceAndCarryingAmountTableTextBlock" name="ScheduleOfCertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalanceAndCarryingAmountTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_InterestBearingDomesticDepositOtherSavings" name="InterestBearingDomesticDepositOtherSavings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesUnguaranteedResidualValuesOfLeasedProperty1" name="CapitalLeasesNetInvestmentInDirectFinancingLeasesUnguaranteedResidualValuesOfLeasedProperty1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_FixedRateLoanCommitmentPeriod" name="FixedRateLoanCommitmentPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour" name="LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_FinanceLeasesFutureMinimumPaymentsReceivableInNextTwelveMonths" name="FinanceLeasesFutureMinimumPaymentsReceivableInNextTwelveMonths" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_NonAccrualLoansMember" name="NonAccrualLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FixedInterestRateSwapMember" name="FixedInterestRateSwapMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FinanceLeasesFutureMinimumPaymentsReceivableRemainderOfFiscalYear" name="FinanceLeasesFutureMinimumPaymentsReceivableRemainderOfFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_ChiefExecutiveOfficerAndThePresidentMember" name="ChiefExecutiveOfficerAndThePresidentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_OffBalanceSheetCreditLossLiabilityAdjustmentForAcquiredLoans" name="OffBalanceSheetCreditLossLiabilityAdjustmentForAcquiredLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_CommonStockSharesPurchasedInOffering" name="CommonStockSharesPurchasedInOffering" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="by_PercentageOfShareholdersEquityForWhichSecuritiesHoldingsExceedsForNoIssuerOtherThanUSGovernmentAndAgencies" name="PercentageOfShareholdersEquityForWhichSecuritiesHoldingsExceedsForNoIssuerOtherThanUSGovernmentAndAgencies" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="by_CreditAgreementMember" name="CreditAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_AvailableForSaleBasisAdjustments" name="AvailableForSaleBasisAdjustments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_LineOfCreditFacilityExtendedMaturityDate" name="LineOfCreditFacilityExtendedMaturityDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesAccruedExpensesAndOtherLiabilities" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesAccruedExpensesAndOtherLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_FederalHomeLoanBankAdvancesVariableInterestRate" name="FederalHomeLoanBankAdvancesVariableInterestRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="by_DebtIssuanceCostsAmortizationPeriod" name="DebtIssuanceCostsAmortizationPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_DerivativeLiabilityFairValueOffsetAgainstCollateralNetCreditExposureOfNotSubjectToMasterNettingArrangementPolicyElection" name="DerivativeLiabilityFairValueOffsetAgainstCollateralNetCreditExposureOfNotSubjectToMasterNettingArrangementPolicyElection" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_ThirdAnniversaryOfGrantDateMember" name="ThirdAnniversaryOfGrantDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_AcquiredNonImpairedAndOriginatedLoansMember" name="AcquiredNonImpairedAndOriginatedLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_AssessmentOfModifiedLoans" name="AssessmentOfModifiedLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_CombinationTermModificationAndPaymentDelayMember" name="CombinationTermModificationAndPaymentDelayMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ScheduleOfJuniorSubordinatedDebtOwedToUnconsolidatedSubsidiaryTrustTableTextBlock" name="ScheduleOfJuniorSubordinatedDebtOwedToUnconsolidatedSubsidiaryTrustTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_RiskRatingsForLoans" name="RiskRatingsForLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_OtherInterestRateDerivativesMember" name="OtherInterestRateDerivativesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_LoanCommitmentsPercentageBearingFixedInterestRate" name="LoanCommitmentsPercentageBearingFixedInterestRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="by_BusinessAcquisitionOptionToAcquireCommonStockShares" name="BusinessAcquisitionOptionToAcquireCommonStockShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_DerivativeInstrumentsTransactionFees" name="DerivativeInstrumentsTransactionFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_TwoThousandTwentySubordinateNotesMember" name="TwoThousandTwentySubordinateNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ATMAndInterchangeFees" name="ATMAndInterchangeFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_CommonStockDividendDeclaredButNotPaid" name="CommonStockDividendDeclaredButNotPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_NoncashInvestingActivitiesDueFromCounterpartiesLoansSoldNotSettled" name="NoncashInvestingActivitiesDueFromCounterpartiesLoansSoldNotSettled" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_ConversionCalculationPercentage" name="ConversionCalculationPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="by_PerformanceBasedRestrictedSharesMember" name="PerformanceBasedRestrictedSharesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_SummaryOfReconciliationOfAcquiredInlandPcdLoansBetweenPurchasePriceAndParValueAtAcquisitionTableTextBlock" name="SummaryOfReconciliationOfAcquiredInlandPcdLoansBetweenPurchasePriceAndParValueAtAcquisitionTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_FirstSecurityBancorpIncMember" name="FirstSecurityBancorpIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_OtherSecuritiesMember" name="OtherSecuritiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_InvestmentSecuritiesPledgedCarryingAmount" name="InvestmentSecuritiesPledgedCarryingAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_ForwardStartingInterestRateSwapsDueMarch2024Member" name="ForwardStartingInterestRateSwapsDueMarch2024Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_PaycheckProtectionProgramLiquidityFacility" name="PaycheckProtectionProgramLiquidityFacility" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_FinancingReceivableAllowanceForLoansAndLossesIndividuallyEvaluatedForImpairment" name="FinancingReceivableAllowanceForLoansAndLossesIndividuallyEvaluatedForImpairment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_ShortTermLinesOfCreditAvailableForUse" name="ShortTermLinesOfCreditAvailableForUse" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_TwoThousandTwentySixOmnibusPlanMember" name="TwoThousandTwentySixOmnibusPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeposits" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeposits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_NumberOfSharesPurchasedThroughBusinessCombination" name="NumberOfSharesPurchasedThroughBusinessCombination" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_VariableRateLoanCommitmentsMaturitiesEndingYear" name="VariableRateLoanCommitmentsMaturitiesEndingYear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_CommitmentsAndContingenciesLiabilitiesLineItems" name="CommitmentsAndContingenciesLiabilitiesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_NonOwnerOccupiedCommercialMember" name="NonOwnerOccupiedCommercialMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ProceedsFromInternallyFinancedSaleOfOtherRealEstate" name="ProceedsFromInternallyFinancedSaleOfOtherRealEstate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_O2024Q4DividendsMember" name="O2024Q4DividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_SegmentNetInterestIncomeAndNoninterestIncome" name="SegmentNetInterestIncomeAndNoninterestIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_AccruedInterestReceivableOnSecurities" name="AccruedInterestReceivableOnSecurities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_DerivativeWeightedAveragePayRate" name="DerivativeWeightedAveragePayRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="by_IncreaseDecreaseInAccruedInterestPayableAndOtherLiabilities" name="IncreaseDecreaseInAccruedInterestPayableAndOtherLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_ChangeInFairValueOfEquitySecuritiesNet" name="ChangeInFairValueOfEquitySecuritiesNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_RidgestoneMember" name="RidgestoneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FairValueLiabilitiesToOrFromLevelThreeTransfersAmount" name="FairValueLiabilitiesToOrFromLevelThreeTransfersAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_InterestRateSwapTwoEffectiveHedgesMember" name="InterestRateSwapTwoEffectiveHedgesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_PaycheckProtectionProgramPortfolioSegmentMember" name="PaycheckProtectionProgramPortfolioSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_NumberOfInvestmentSecuritiesWithUnrealizedLosses" name="NumberOfInvestmentSecuritiesWithUnrealizedLosses" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="by_InlandBancorpTrustFourMember" name="InlandBancorpTrustFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ScheduleOfFairValueHedgesTableTextBlock" name="ScheduleOfFairValueHedgesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_IncreaseDecreaseInAccruedInterestReceivableAndOtherAssetsNet" name="IncreaseDecreaseInAccruedInterestReceivableAndOtherAssetsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_FixedInterestsRateSwapFiveMember" name="FixedInterestsRateSwapFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_O2025Q3DividendsMember" name="O2025Q3DividendsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_OtherRealEstateOwnedPortfolioSegmentMember" name="OtherRealEstateOwnedPortfolioSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FederalHomeLoanBankFixedRateAdvances" name="FederalHomeLoanBankFixedRateAdvances" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_BusinessAcquisitionCashPaymentPerShare" name="BusinessAcquisitionCashPaymentPerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_CommitmentsAndContingenciesLiabilitiesTable" name="CommitmentsAndContingenciesLiabilitiesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_AgencyResidentialMortgageBackedSecuritiesMember" name="AgencyResidentialMortgageBackedSecuritiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ProceedsFromSalesOfAssetsHeldForSale" name="ProceedsFromSalesOfAssetsHeldForSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_FinanceLeasesFutureMinimumPaymentsReceivableInTwoYears" name="FinanceLeasesFutureMinimumPaymentsReceivableInTwoYears" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankOwnedLifeInsurance" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankOwnedLifeInsurance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_SummaryOfCollateralDependentLoansAndLeasesTableTextBlock" name="SummaryOfCollateralDependentLoansAndLeasesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_DerivativeWeightedAverageReceiveRate" name="DerivativeWeightedAverageReceiveRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="by_TotalModifiedByClassMember" name="TotalModifiedByClassMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_OmnibusPlanMember" name="OmnibusPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_DerivativeMaturityDateStartYear" name="DerivativeMaturityDateStartYear" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_NetChangeInServicingAssets" name="NetChangeInServicingAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_ServicingAssetsMember" name="ServicingAssetsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ResidentialConstructionMember" name="ResidentialConstructionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestGrantsInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestGrantsInPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_StockIssuedDuringPeriodValueStockOptionsExercised1" name="StockIssuedDuringPeriodValueStockOptionsExercised1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_SummaryOfChangeInBalanceForAllowanceForCreditLossesUnfundedCommitmentsTableTextBlock" name="SummaryOfChangeInBalanceForAllowanceForCreditLossesUnfundedCommitmentsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_LoanAndLeaseRelatedExpenses" name="LoanAndLeaseRelatedExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_FeesAndServiceChargesOnDeposits" name="FeesAndServiceChargesOnDeposits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_PaymentsForOriginationsOfUSGovernmentGuaranteedLoans" name="PaymentsForOriginationsOfUSGovernmentGuaranteedLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_AcquiredNonImpairedLoansMember" name="AcquiredNonImpairedLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FederalReserveBankDiscountWindowLineMember" name="FederalReserveBankDiscountWindowLineMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ForwardStartingInterestRateSwapsDueAugust2024Member" name="ForwardStartingInterestRateSwapsDueAugust2024Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_TwoThousandTwentyFiveSubordinateNotesMember" name="TwoThousandTwentyFiveSubordinateNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_CommercialConstructionMember" name="CommercialConstructionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FederalHomeLoanBankVariableRateAdvances" name="FederalHomeLoanBankVariableRateAdvances" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_SingleFamilyResidence2ndLienMember" name="SingleFamilyResidence2ndLienMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FirstEvanstonBancorpIncStockIncentivePlanMember" name="FirstEvanstonBancorpIncStockIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_AccruedInterestReceivableAndOtherAssetsMember" name="AccruedInterestReceivableAndOtherAssetsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_BusinessAcquisitionTransactionClosingDate" name="BusinessAcquisitionTransactionClosingDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_GainsLossesOnSalesOfOtherRealEstateAndOtherRelatedExpenses" name="GainsLossesOnSalesOfOtherRealEstateAndOtherRelatedExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_FinancialAssetLessThan12MonthsMember" name="FinancialAssetLessThan12MonthsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ScheduleOfShortTermDebtAvailableForUseTableTextBlock" name="ScheduleOfShortTermDebtAvailableForUseTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals1" name="OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_InlandBancorpIncMember" name="InlandBancorpIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FairValueMeasurementChangeInValuationOfInputValueDescription" name="FairValueMeasurementChangeInValuationOfInputValueDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_AccruedInterestPayableAndOtherLiabilitiesMember" name="AccruedInterestPayableAndOtherLiabilitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_OtherRealEstateAcquisitionThroughBusinessCombination" name="OtherRealEstateAcquisitionThroughBusinessCombination" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_ThreeMonthSecuredOvernightFinancingRatePlusFiveEightyEightBasisPointsMember" name="ThreeMonthSecuredOvernightFinancingRatePlusFiveEightyEightBasisPointsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_AccruedInterestPayableAndOtherLiabilities" name="AccruedInterestPayableAndOtherLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_TermModificationMember" name="TermModificationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_AmountOfGainLossRecognizedInOtherNonInterestIncomeIneffectivePortion" name="AmountOfGainLossRecognizedInOtherNonInterestIncomeIneffectivePortion" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_SummaryOfBalancesForEachRespectiveLoanAndLeaseCategoryTableTextBlock" name="SummaryOfBalancesForEachRespectiveLoanAndLeaseCategoryTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_RidgeStoneCapitalTrustIMember" name="RidgeStoneCapitalTrustIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FinancingReceivableCollateralDependentLoansAndLeases" name="FinancingReceivableCollateralDependentLoansAndLeases" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_IndividuallyEvaluatedForImpairmentMember" name="IndividuallyEvaluatedForImpairmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_NonAgencySecuritiesMember" name="NonAgencySecuritiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_AccretionOfPremiumsAndDiscountsOnAcquiredLoansNet" name="AccretionOfPremiumsAndDiscountsOnAcquiredLoansNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_CommitmentsOutstandingOnModifiedLoans" name="CommitmentsOutstandingOnModifiedLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_AcquiredNonCreditDeterioratedMember" name="AcquiredNonCreditDeterioratedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ProceedsFromUSGovernmentGuaranteedLoansSold" name="ProceedsFromUSGovernmentGuaranteedLoansSold" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_QualifyPercentageOfSubordinatedDebt" name="QualifyPercentageOfSubordinatedDebt" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_ScheduleOfContractOrNotionalAmountOfOutstandingLoanAndLeaseCommitmentsTableTextBlock" name="ScheduleOfContractOrNotionalAmountOfOutstandingLoanAndLeaseCommitmentsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_FixedToFloatingSubordinateNotesMatureOnFifteenthAugustTwoThousandThirtyFiveMember" name="FixedToFloatingSubordinateNotesMatureOnFifteenthAugustTwoThousandThirtyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax1" name="AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_AllowanceForCreditLossesTableTextBlock" name="AllowanceForCreditLossesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_TerminatedSwaps" name="TerminatedSwaps" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_WeightedAverageExtendedMaturityMember" name="WeightedAverageExtendedMaturityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FixedRateLoanCommitmentsMaturitiesEndingYear" name="FixedRateLoanCommitmentsMaturitiesEndingYear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_InlandBancorpTrustThreeMember" name="InlandBancorpTrustThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_NetGainsOnSalesOfLeases" name="NetGainsOnSalesOfLeases" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_TimeOptionsGrantsMember" name="TimeOptionsGrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FirstAnniversaryOfGrantDateMember" name="FirstAnniversaryOfGrantDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_LoanCommitmentsPercentageBearingVariableInterestRate" name="LoanCommitmentsPercentageBearingVariableInterestRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="by_UnpaidPrincipalBalanceOfPurchasedCreditDeteriorationLoans" name="UnpaidPrincipalBalanceOfPurchasedCreditDeteriorationLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_FairValueInputExpectedWeightedAverageLoanLifeWeightedAverageRangeAssumptionsExpectedTerm" name="FairValueInputExpectedWeightedAverageLoanLifeWeightedAverageRangeAssumptionsExpectedTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_NonInterestExpenseMember" name="NonInterestExpenseMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_EmployeeServiceShareBasedCompensationTaxBenefitExpenseFromCompensationExpense" name="EmployeeServiceShareBasedCompensationTaxBenefitExpenseFromCompensationExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_ProvisionForCreditLosses" name="ProvisionForCreditLosses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_FinancialAsset12MonthsOrLongerMember" name="FinancialAsset12MonthsOrLongerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_SubleaseContractExpirationPeriod" name="SubleaseContractExpirationPeriod" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_InstallmentAndOtherPortfolioSegmentMember" name="InstallmentAndOtherPortfolioSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_CollectivelyEvaluatedForImpairmentMember" name="CollectivelyEvaluatedForImpairmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncrementalPerformanceSharesVested" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardIncrementalPerformanceSharesVested" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_ScheduleOfDepositsTableTextBlock" name="ScheduleOfDepositsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_OwnerOccupiedCommercialMember" name="OwnerOccupiedCommercialMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_SubordinatedNotesAndJuniorSubordinatedDebtOwedToUnconsolidatedSubsidiaryTrustTextBlock" name="SubordinatedNotesAndJuniorSubordinatedDebtOwedToUnconsolidatedSubsidiaryTrustTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesInitialDirectCosts1" name="CapitalLeasesNetInvestmentInDirectFinancingLeasesInitialDirectCosts1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour" name="FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_BusinessAcquisitionOptionToAcquireCommonStockValue" name="BusinessAcquisitionOptionToAcquireCommonStockValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_USDAGuaranteedLoansMember" name="USDAGuaranteedLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ConstructionLandDevelopmentAndOtherLandPortfolioSegmentMember" name="ConstructionLandDevelopmentAndOtherLandPortfolioSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_LessorOperatingLeaseMaturityYear" name="LessorOperatingLeaseMaturityYear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_RequiredInvestmentInFederalHomeLoanBankConversionRatio" name="RequiredInvestmentInFederalHomeLoanBankConversionRatio" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="by_EachAnniversaryDateOfGrantVestOverThreeYearsMember" name="EachAnniversaryDateOfGrantVestOverThreeYearsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived1" name="CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_InlandBancorpTrustFiveMember" name="InlandBancorpTrustFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_AmendedCreditAgreementMember" name="AmendedCreditAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_InterestBearingTimeDepositBrokered" name="InterestBearingTimeDepositBrokered" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_EachAnniversaryDateOfGrantVestOverFourYearsMember" name="EachAnniversaryDateOfGrantVestOverFourYearsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_ScheduleOfInterestRateDerivativesAndOffsettingPositionsTableTextBlock" name="ScheduleOfInterestRateDerivativesAndOffsettingPositionsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_LoansAndLeasesReceivableUnpaidPrincipalBalance" name="LoansAndLeasesReceivableUnpaidPrincipalBalance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="by_AdjustmentsAndReconcilingItems1" name="AdjustmentsAndReconcilingItems1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsNotExpectedToBeCollectedAtAcquisition" name="CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsNotExpectedToBeCollectedAtAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_RepaymentsOfTermLoan" name="RepaymentsOfTermLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="by_WatchMember" name="WatchMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FirstEvanstonBancorpTrustOneMember" name="FirstEvanstonBancorpTrustOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FixedInterestRateSwapTwoMember" name="FixedInterestRateSwapTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_DerivativeMaturityDatesEndYear" name="DerivativeMaturityDatesEndYear" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="by_BusinessAssetsMember" name="BusinessAssetsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_FederalReserveBankOfChicagoDiscountWindowLineMember" name="FederalReserveBankOfChicagoDiscountWindowLineMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="by_Heldtomaturitysecuritiescontinuousunrealizedlosspositionnumberofpositions" name="Heldtomaturitysecuritiescontinuousunrealizedlosspositionnumberofpositions" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="by_FairValueAssetsToOrFromLevelThreeTransfersAmount" name="FairValueAssetsToOrFromLevelThreeTransfersAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
</xsd:schema>
