Document And Entity Information
Statistical Measurement [Axis]
Note To Financial Statement Details Textual
srt_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Share Repurchase Program, Authorized, Number of Shares (in shares)
Note 2 - Debt Securities
Note 3 - Loans
Provision for income taxes
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Note 4 - Allowance for Credit Losses on Loans
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Note 5 - Leases
Trading Arrangements, by Individual [Table]
Note 6 - Deposits
Material Terms of Trading Arrangement [Text Block]
Note 8 - Shareholders' Equity
Note 9 - Commitments and Contingencies
Note 11 - Other Expenses
Financial Instrument [Axis]
Investment in Debt and Equity Securities and Other Trading Assets [Text Block]
Note 12 - Fair Value
us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
Restricted stock surrendered for tax withholding upon vesting (in shares)
Note 14 - Revenue From Contracts with Clients
Minimum [Member]
Note 2 - Debt Securities - Schedule of Available for Sale Securities (Details)
us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Available-for-sale, gross unrealized losses
Foreign exchange income
Foreign exchange income
Note 2 - Debt Securities - Schedule of Unrealized Losses (Details)
Available-for-sale, gross unrealized gains
Statistical Measurement [Domain]
us-gaap_PercentageOfInterestBearingDomesticDepositsToDepositsBrokered
Percentage of Interest-Bearing Domestic Deposits to Deposits, Brokered
Dividends Payable [Table]
Note 2 - Debt Securities - Schedule of Contractual Maturities (Details)
Maximum [Member]
Note 3 - Loans - Schedule of Loans (Details)
Share Repurchase Program [Axis]
Note 4 - Allowance for Credit Losses on Loans - Schedule of Allowance for Credit Losses (Details)
Share Repurchase Program [Domain]
Note 4 - Allowance for Credit Losses on Loans - Schedule of Nonaccrual Loans (Details)
Note 4 - Allowance for Credit Losses on Loans - Credit Quality Information (Details)
Note 4 - Allowance for Credit Losses on Loans - Loans Past Due (Details)
Note 4 - Allowance for Credit Losses on Loans - Schedule of Collateralized Loans (Details)
Note 4 - Allowance for Credit Losses on Loans - Modified Loans (Details)
Note 5 - Leases - Balance Sheet Classification (Details)
Note 5 - Leases - Lease Expense (Details)
Note 5 - Leases - Schedule of Future Lease Payments (Details)
Note 5 - Leases - Supplemental Lease Information (Details)
Note 6 - Deposits - Schedule of Deposits (Details)
Note 6 - Deposits - Deposit Maturities (Details)
Note 6 - Deposits - Schedule of Deposit Interest Expense (Details)
Note 8 - Shareholders' Equity - Earnings Per Share (Details)
Note 8 - Shareholders' Equity - Regulatory Capital (Details)
Note 9 - Commitments and Contingencies - Schedule of Off Balance Sheet Instruments (Details)
Note 11 - Other Expenses - Schedule of Other Expenses (Details)
Commercial Mortgage-Backed Securities [Member]
Note 12 - Fair Value - Schedule of Assets and Liabilities at Fair Value (Details)
Note 12 - Fair Value - Assets Measured on Recurring Basis (Details)
Note 14 - Revenue from Contracts with Clients - Disaggregation of Revenue from Clients (Details)
Notes To Financial Statements
Notes To Financial Statements [Abstract]
Debt Securities, Available-for-Sale [Table]
Salaries and employee benefits
Financial Instruments [Domain]
Asset Pledged as Collateral [Member]
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
us-gaap_DebtSecuritiesAvailableForSaleTransferToTradingGainLoss
Debt Securities, Available-for-Sale, Transfer to Trading, Gain (Loss)
Letter of Credit [Member]
Lender Concentration Risk [Member]
Segment Reporting [Text Block]
12 months or more, fair value
Less than 12 months, fair value
Financial Instruments Owned and Pledged as Collateral [Table]
Adjustments to reconcile net income to net cash provided by operating activities:
Preferred stock - no par value; 5,000,000 shares authorized; no shares issued and outstanding at March 31, 2026 and December 31, 2025
us-gaap_Liabilities
Total liabilities
Banking Regulation, Regulatory Capital Requirement, Compliance [Table]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and shareholders' equity
Cash and Cash Equivalents [Axis]
Pledged Status [Domain]
Segment Reporting [Table]
Pledged Status [Axis]
Stock-based compensation expense
LIABILITIES AND SHAREHOLDERS' EQUITY
Federal Home Loan Bank of San Francisco [Member]
Discount Window [Member]
Relating to discount window.
Unrealized holdings (losses) / gains on derivatives
Federal Lines of Credit [Member]
Relating to federal lines of credit.
Lessee, Lease, Description [Table]
avbh_IncreaseDecreaseInAccruedInterestReceivableAndOtherAssets
Net decrease in accrued interest receivable and other assets
Represents the increase (decrease) in accrued interest receivable and other assets.
Net decrease in accrued interest payable and other liabilities
Represents the increase (decrease) in accrued interest payable and other liabilities.
Net proceeds / (repayment) from Federal Reserve Bank borrowings
Lease Contractual Term [Axis]
Lease Contractual Term [Domain]
Preferred stock, shares issued (in shares)
Preferred stock, shares outstanding (in shares)
Preferred stock, shares authorized (in shares)
Portion at Fair Value Measurement [Member]
Reported Value Measurement [Member]
Fair Value, by Balance Sheet Grouping [Table]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net change in cash and cash equivalents
Cash and cash equivalents
us-gaap_CashAndCashEquivalentsFairValueDisclosure
Estimate of Fair Value Measurement [Member]
Common equity tier 1, actual, ratio
Federal Funds Purchased [Member]
Risk based capital, well capitalized minimum, ratio
Risk based capital, actual, ratio
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
US Government Agencies Debt Securities [Member]
Risk based capital, minimum, ratio
Leverage ratio, actual, ratio
Tier 1 risk based capital, minimum, ratio
Leverage ratio, minimum, ratio
Statement [Table]
Leverage ratio, well capitalized minimum, ratio
Credit Facility [Axis]
us-gaap_TimeDeposits
Total time deposits
Credit Facility [Domain]
Common equity tier 1, minimum, ratio
Common equity tier 1, well capitalized minimum, ratio
Tier 1 risk based capital, well capitalized minimum, ratio
Accrued interest payable and other liabilities
Tier 1 risk based capital, actual, ratio
us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
Unrealized loss position, unrealized losses
Loans, net
us-gaap_LoansReceivableFairValueDisclosure
Loans Receivable, Fair Value Disclosure
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Debt Instrument, Basis Spread on Variable Rate
Recording of right-of-use assets in exchange for lease liabilities
Unrealized loss position, fair value
Equipment [Member]
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
Short-term borrowings
us-gaap_NotesPayableFairValueDisclosure
Financing Receivable, Allowance for Credit Loss [Table Text Block]
Financing Receivable, Past Due [Table Text Block]
Long-Term Debt, Type [Axis]
Financing Receivable Credit Quality Indicators [Table Text Block]
Financing Receivable, Modified [Table Text Block]
us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total undiscounted lease payments
Deposits [Member]
Residential Mortgage-Backed Securities [Member]
Operating lease weighted average discount rate
Fixed rate commitments
2027
Interest and fees on loans
2026
Common Stock Outstanding [Member]
Relating to common stock outstanding.
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
2029
ASSETS
Measurement Frequency [Axis]
us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale
Commitments and Contingencies Disclosure [Text Block]
2028
Statement [Line Items]
Liability Class [Axis]
2030
Variable rate commitments
Fair Value Hierarchy and NAV [Axis]
Common stock, issued (in shares)
Common stock, outstanding (in shares)
Common stock, authorized (in shares)
srt_FederalFundsPurchasedAverageRatePaid
Federal Funds Purchased, Average Rate Paid
srt_FinancingReceivableBeforeAllowanceForCreditLossToTotalPercent
Financing Receivable, before Allowance for Credit Loss, to Total, Percent
Common stock - no par value; 25,000,000 shares authorized; 10,955,167 and 10,947,967 shares issued and outstanding at March 31, 2026 and December 31, 2025, respectively
Interest Rate and Interest Differential Analysis [Table Text Block]
Interest Rate and Interest Differential Analysis [Table]
Short-Term Debt, Type [Domain]
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
Short-Term Debt, Type [Axis]
us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive income
us-gaap_FederalFundsPurchased
Federal Funds Purchased
Short-term borrowings
us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds
Concentration Risk Type [Axis]
Related Party [Member]
Significant Accounting Policies [Text Block]
us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available
Proceeds from paydowns/maturities of available-for-sale debt securities
Less imputed interest
Net lease liabilities
Total lease liabilities
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
Deposits
us-gaap_DepositsFairValueDisclosure
Accounts Receivable [Member]
Concentration Risk Type [Domain]
2026
us-gaap_TimeDepositMaturitiesRemainderOfFiscalYear
Subordinated debentures, net
us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations
Federal Home Loan Bank stock, at cost
Derivative instruments designated as cash flow hedges:
us-gaap_LongTermDebt
Long-Term Debt
Financial Standby Letter of Credit [Member]
us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent
Other comprehensive (loss) / income, before tax
Other comprehensive income, before tax
Statement of Stockholders' Equity [Abstract]
Extended Maturity [Member]
Statement of Comprehensive Income [Abstract]
Loss Contingency Nature [Axis]
Loan Restructuring Modification [Axis]
Loan Restructuring Modification [Domain]
Statement of Cash Flows [Abstract]
Financing Receivable Portfolio Segment [Axis]
Other comprehensive income (loss)
Total other comprehensive (loss) / income, after tax
Long-Term Debt, Type [Domain]
Equity Components [Axis]
Unfunded Loan Commitment [Member]
Financing Receivable Portfolio Segment [Domain]
Equity Component [Domain]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 3 [Member]
Equity [Text Block]
Fair Value, Inputs, Level 1 [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Loss Contingency, Nature [Domain]
Real Estate [Member]
Subordinated Debt [Member]
Premises and equipment, net
Subordinated debentures, net
Financial Asset, Aging [Axis]
Outstanding loans
Total outstanding loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss
Financing Receivable, Nonaccrual [Table Text Block]
Financial Asset, Aging [Domain]
Provision for credit losses
Federal Reserve Bank [Member]
Relating to the federal reserve bank.
Financial Asset, 30 to 59 Days Past Due [Member]
Commercial and Industrial Portfolio Segment [Member]
Relating to commercial and industrial.
Available-for-sale, amortized cost
Amortized cost
Total available-for-sale, amortized cost
Stock-based compensation
Loans, allowance for credit loss
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest
Allowance for credit losses on loans
Balance
Balance
Financial Asset, 60 to 89 Days Past Due [Member]
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Allowance for credit losses
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest
Originated four years prior
Originated over four years prior
Doubtful Nonaccrual [Member]
Doubtful Nonaccrual
Originated two years prior
Originated three years prior
Fair Value Disclosures [Text Block]
Originated current year
Fair Value, by Balance Sheet Grouping [Table Text Block]
Originated prior year
Supplemental disclosure of cash flow information:
Revolving
Revolving converted to term
Accrued interest payable
avbh_InterestPayableFairValueDisclosure
Fair value portion of interest payable.
Accrued interest receivable
avbh_InterestReceivableFairValueDisclosure
Fair value portion of interest receivable.
Other Collateral Pledged [Member]
Other Collateral Pledged
us-gaap_GuarantorObligationTerm1
Guarantor Obligation, Term (Year)
avbh_RepaymentOfOperatingLeaseLiabilities
Repayment of operating lease liabilities
The value of repayments on operating lease liabilities.
Lease, Cost [Table Text Block]
Collateral Held [Domain]
Collateral Held [Axis]
Other Commitments [Table Text Block]
Tier 1 risk based capital, minimum, amount
Other Commitments [Table]
Tier 1 risk based capital, well capitalized minimum, amount
Tier 1 risk based capital, actual, amount
Common stock, par value (in dollars per share)
Accumulated other comprehensive loss, net of taxes
Leverage ratio, minimum, amount
Leverage ratio, well capitalized minimum, amount
Leverage ratio, actual, amount
2029
us-gaap_TimeDepositMaturitiesYearThree
2028
us-gaap_TimeDepositMaturitiesYearTwo
2027
us-gaap_TimeDepositMaturitiesYearOne
Other Commitments [Axis]
Other Commitments [Domain]
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income before provision for income taxes
Data processing
Debt Disclosure [Text Block]
Risk based capital, minimum, amount
Risk based capital, actual, amount
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchase of premises and equipment
Lessee, Operating Leases [Text Block]
Collateral Pledged [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table]
us-gaap_NoninterestExpense
Total non-interest expense
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Non-interest expense
Risk based capital, well capitalized minimum, amount
Financial Asset, Not Past Due [Member]
Fair Value, Recurring and Nonrecurring [Table]
Credit Loss, Financial Instrument [Text Block]
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
Restricted stock issued, net of forfeitures (in shares)
us-gaap_DebtInstrumentInterestRateEffectivePercentage
Debt Instrument, Interest Rate, Effective Percentage
Related and Nonrelated Parties [Axis]
us-gaap_TreasuryStockSharesAcquired
Repurchase of common stock (in shares)
us-gaap_UnusedCommitmentsToExtendCredit
Unused Commitments to Extend Credit
Schedule of Long-Term Debt Instruments [Table]
Travel and meals
Operating activities
Investing activities
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash provided by operating activities
Financing activities
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash (used in) / provided by investing activities
us-gaap_TreasuryStockAcquiredAverageCostPerShare
Shares Acquired, Average Cost Per Share (in dollars per share)
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash provided by financing activities
us-gaap_AdvancesFromFederalHomeLoanBanks
Advance from Federal Home Loan Bank
us-gaap_ProceedsFromRepaymentsOfDebt
Proceeds from (Repayments of) Debt
Net increase in deposits
Accounting Policies [Abstract]
US States and Political Subdivisions Debt Securities [Member]
us-gaap_StockRepurchasedDuringPeriodValue
Stock Repurchased During Period, Value
Loans, net of allowance for credit losses on loans of $20,938 and $22,261
Total loans, net of allowance for credit losses on loans
us-gaap_StockRepurchasedDuringPeriodShares
Stock Repurchased During Period, Shares (in shares)
Net proceeds / (repayment) from Federal Home Loan Bank borrowings
us-gaap_PaymentsForProceedsFromLoansAndLeases
Net (increase) / decrease in loans
Income Statement [Abstract]
Total securities available-for-sale
Debt securities available-for-sale, at fair value (amortized cost $212,366 and $218,488, net of allowance for credit losses of $0 and $0)
Debt Securities, Available-for-Sale, Excluding Accrued Interest
Total available-for-sale, fair value
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
Net proceeds / (repayment) from overnight borrowings
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
us-gaap_AmortizationOfDeferredLoanOriginationFeesNet
Increase in deferred loan origination fees, net
us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
Share Repurchase Program, Remaining Authorized, Number of Shares (in shares)
Net income
Net income
Net income
us-gaap_InterestIncomeExpenseNet
Net interest income
avbh_DebtSecuritiesUnrealizedLossCreditImpairment
Debt Securities, Unrealized Loss, Credit Impairment
The credit impairment on debt securities in an unrealized loss position.
us-gaap_FederalHomeLoanBankAdvances
Federal Home Loan Bank, Advance
Nonaccrual, with allowance
Amortized cost excluding accrued interest, of financing receivable on nonaccrual status with allowance for credit loss. Excludes net investment in lease.
us-gaap_DividendPaymentsRestrictionsScheduleStatutoryCapitalAndSurplus1
Dividend Payments Restrictions Schedule, Statutory Capital and Surplus
Other Nonoperating Income and Expense [Text Block]
Accounting Standards Update and Change in Accounting Principle [Table]
Substandard - Nonaccrual [Member]
Relating to substandard - nonaccrual.
Business Assets [Member]
Relating to business assets.
Supplemental non-cash disclosures:
Nonaccrual [Member]
Relating to nonaccrual.
Past Due and Nonaccrual [Member]
Relating to past due and nonaccrual.
Occupancy and equipment
Other operating expenses
Total other expenses
Related and Nonrelated Parties [Domain]
Business software and subscriptions
us-gaap_TreasuryStockValueAcquiredCostMethod
Repurchase of common stock
Related Party Transaction [Table]
Bank-owned life insurance income
Earnings on bank-owned life insurance policies
Bank owned life insurance income
Interest Rate Reduction, Payment Delay, and Term Extension [Member]
Relating to interest rate reduction, payment delay, and term extension.
us-gaap_NoninterestIncome
Total non-interest income
Related Party Transactions Disclosure [Text Block]
Non-interest income
Principal Forgiveness, Interest Rate Reduction, Payment Delay, and Term Extension [Member]
Relating to principal forgiveness, interest rate reduction, payment delay, and term extension.
Lease, Balance Sheet Classification [Table Text Block]
Tabular disclosure of lease assets and liabilities, and their associated balance sheet classifications.
Payment Delay and Extended Maturity [Member]
Relating to payment delay and extended maturity.
Interest rate Reduction and Payment Delay [Member]
Relating to interest rate reduction and payment delay.
Administrative Offices in San Jose [Member]
Relating to administrative offices in San Jose.
Measurement Basis [Axis]
us-gaap_GainsLossesOnSalesOfOtherRealEstate
Gains (Losses) on Sales of Other Real Estate
Other income
Other income
avbh_OverdrawnDeposits
Overdrawn Deposits
Represents the amount of overdrawn deposits.
Fair Value Hierarchy and NAV [Domain]
Measurement Frequency [Domain]
Supplemental Lease Information [Table Text Block]
The tabular disclosure of supplemental lease information.
Uninsured Deposits [Member]
Relating to uninsured deposits.
Statement of Financial Position [Abstract]
Percentage of Total Deposits [Member]
Relating to percentage of total deposits.
Deposit Concentration Benchmark [Member]
Relating to deposit concentration benchmark.
Deposit Liability [Table]
Provision for credit losses on loans
Income taxes, net of refunds
avbh_ReceivablesUnamortizedIssuanceCosts
Receivables, Unamortized Issuance Costs
Represents the amount of unamortized issuance costs for receivables to be recognized as revenue over the term of the commitment.
2030 and after
avbh_TimeDepositMaturitiesYearFourAndAfter
Amount of time deposit maturing in fourth fiscal year following current fiscal year and beyond. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
avbh_FederalReserveBankBorrowingsOutstanding
Federal Reserve Bank Borrowings, Outstanding
Represents the amount of federal reserve bank borrowings outstanding.
Advertising and marketing
Recoveries
Loans charged-off
Charge-offs
Director's fees and expenses
Legal and professional fees
Fair Value, Recurring [Member]
Common equity tier 1, actual, amount
Common equity tier 1, minimum, amount
us-gaap_PaymentsForRepurchaseOfCommonStock
Repurchase of common stock
avbh_ShareRepurchaseProgramAuthorizedPercentageOfStockOutstanding
Share Repurchase Program, Authorized, Percentage of Stock Outstanding
Represents the percentage of stock outstanding that represents authorized share for repurchase.
Share Repurchase Program [Member]
Relating to share repurchase program.
Document Type
Document Information [Line Items]
Document Quarterly Report
us-gaap_LesseeOperatingLeaseTermOfContract
Lessee, Operating Lease, Term of Contract (Month)
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
us-gaap_LesseeOperatingLeaseRenewalTerm
Lessee, Operating Lease, Renewal Term (Year)
Operating lease weighted average remaining lease term (years) (Year)
Document Information [Table]
Common equity tier 1, well capitalized minimum, amount
us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Anti-dilutive awards (1) (in shares)
us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
Add: dilutive impact of restricted stock (in shares)
Entity Interactive Data Current
Avidbank Holdings, Inc. [Member]
Relating to Avidbank Holdings, Inc.
Cash surrender value of bank-owned life insurance policies
Document Transition Report
Weighted average shares - diluted (in shares)
Total weighted average shares outstanding - diluted (in shares)
Weighted average shares - basic (in shares)
Total weighted average shares outstanding - basic (in shares)
us-gaap_DebtInstrumentTerm
Debt Instrument, Term (Year)
Basic earnings per common share (in dollars per share)
Basic earnings per common share (in dollars per share)
Nonaccrual, still accruing
Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]
Nonaccrual, no allowance
Nonaccrual
Interest-bearing
Total interest-bearing deposits
Debt Securities, Available-for-Sale [Table Text Block]
us-gaap_Deposits
Deposits
Total deposits
Deposit Liabilities Disclosures [Text Block]
Non-interest-bearing deposits
Document Fiscal Period Focus
Pledging Purpose [Axis]
Document Fiscal Year Focus
Pledging Purpose [Domain]
Amendment Flag
Financing Receivables [Text Block]
Federal Home Loan Bank Branch [Domain]
Fixed Rate Loan Commitments [Member]
Relating to fixed rate loan commitments.
us-gaap_SubleaseIncome
Sublease income
Federal Home Loan Bank Branch [Axis]
Commitments to Make Loans [Member]
Relating to commitments to make loans.
Financing Receivable, Past Due [Table]
avbh_GuarantorObligationsInterestRate
Guarantor Obligations, Interest Rate
Represents the interest rate on guarantor obligations.
Document Period End Date
Construction and Commercial Real Estate [Member]
Relating to construction and commercial real estate.
Interest income
Regulatory assessments
Noninterest expenses related to the regulatory assessments.
Residential Portfolio Segment [Member]
Federal Home Loan Bank dividends
Legal Entity [Axis]
us-gaap_InterestAndDividendIncomeOperating
Total interest income
Consumer Portfolio Segment [Member]
Operating lease cost
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Table]
us-gaap_LeaseCost
Total lease cost, net
Service charges and fees
Service charges and fees
The amount of service charges, fees and other income.
Entity File Number
Non-reciprocal brokered (1)
Interest-Bearing Domestic Deposit, Brokered
us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax
Entity Tax Identification Number
Correspondent bank charges
Represents the amount of bank charges expensed during the period.
Warrant and success fee income
Warrant and success fee income
The amount of warrant and success fee income.
avbh_OtherSundryNoninterestExpenses
Other
Represents the amount of unclassified noninterest expenses.
Disaggregation of Revenue [Table Text Block]
us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Less than 12 months, unrealized losses
Disaggregation of Revenue [Table]
us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
12 months or more, unrealized losses
Entity [Domain]
Entity Central Index Key
Entity Registrant Name
Other time
Entity Current Reporting Status
Special Mention [Member]
Money market
Substandard [Member]
Entity Incorporation, State or Country Code
Other investment income
Other investment income
Represents the amount of investment income classified as noninterest.
Pass [Member]
Current Fiscal Year End Date
Time, $250,000 or more
Interest-bearing checking
Entity Ex Transition Period
us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1
Tax effect
Entity Filer Category
Entity Shell Company
Entity Emerging Growth Company
Entity Small Business
us-gaap_DerivativeNumberOfInstrumentsHeld
Derivative, Number of Instruments Held
Savings
Cash and Cash Equivalents [Domain]
us-gaap_DerivativeAssets
Derivative Asset
Financing Receivable, Modified [Table]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Interest expense
Due from Federal Reserve Bank and interest-bearing deposits in other financial institutions
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Interest on deposits
Total interest-bearing deposits
Entity Address, State or Province
Entity Address, City or Town
Marketable Securities [Table]
Retained earnings
us-gaap_InterestExpenseOperating
Total interest expense
Entity Address, Address Line One
City Area Code
Due after one year through five years, amortized cost
Non-reciprocal brokered
us-gaap_InterestExpenseDomesticDepositLiabilitiesBrokered
Due after five years through 10 years, amortized cost
Time, $250,000 or more
us-gaap_InterestExpenseDomesticDepositLiabilitiesCertificatesOfDeposit
Local Phone Number
Due in one year or less, amortized cost
Entity Address, Postal Zip Code
Revenue from Contract with Customer [Text Block]
Derivative [Table]
Debt securities not due at a single maturity date: mortgage-backed securities, fair value
Savings
us-gaap_InterestExpenseDomesticDepositLiabilitiesSavings
Title of 12(b) Security
Security Exchange Name
Due after five years through 10 years, fair value
Other time
us-gaap_InterestExpenseDomesticDepositLiabilitiesOtherTimeDeposit
Trading Symbol
Due after 10 years, fair value
Due in one year or less, fair value
Money market
us-gaap_InterestExpenseDomesticDepositLiabilitiesMoneyMarket
Due after one year through five years, fair value
Due after 10 years, amortized cost
Interest-bearing checking
us-gaap_InterestExpenseDomesticDepositLiabilitiesChecking
Debt securities not due at a single maturity date: mortgage-backed securities, amortized cost
Class of Stock [Axis]
Class of Financing Receivable [Axis]
Class of Financing Receivable [Domain]
Thereafter
Amount of lessee's undiscounted obligation for lease payment for operating lease due after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
Entity Common Stock, Shares Outstanding
Preferred stock, par value (in dollars per share)
us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax
Interest on subordinated debentures
Financing Receivable, Credit Quality Indicator [Table]
Unrealized holdings (losses) / gains
us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
Internal Credit Assessment [Axis]
Interest on short-term borrowings
Restricted stock issued, net
The proceeds from the issuance of restricted stock.
us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
Net interest income after provision for credit losses
Due From Federal Reserve Bank and Deposits in Banks [Member]
Relating to due from Federal Reserve Bank and deposits in banks.
Cash and Due From Banks [Member]
Relating to cash and due from banks.
Investments Classified by Contractual Maturity Date [Table Text Block]
Internal Credit Assessment [Domain]
Taxable debt securities
Tax-exempt debt securities
Cash and due from financial institutions
us-gaap_Assets
Total assets
us-gaap_CashAndCashEquivalentsAtCarryingValue
Total cash and cash equivalents
Financing Receivable, Nonaccrual [Table]
Other interest income
Modified in period
Modified in period, percentage
Diluted earnings per common share (in dollars per share)
Diluted earnings per common share (in dollars per share)
Time Deposit Maturities [Table Text Block]
Depreciation, amortization and accretion
us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
Restricted stock surrendered for tax withholding upon vesting
Term extension (Month)
Accounts and Financing Receivables [Table]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Fair Value by Liability Class [Domain]
Accrued interest receivable and other assets
us-gaap_InterestPaidNet
Interest expense
Construction Portfolio Segment [Member]
Represents the construction portfolio segment.
Disaggregation of Income Statement Expense, Caption [Table]
Originated over four years prior, charge offs
Revolving, charge offs
Originated three years prior, charge offs
Originated four years prior, charge offs
Originated prior year, charge offs
Originated two years prior, charge offs
Originated current year, charge offs
Revolving converted to term, charge offs
Deposit Liabilities, Type [Table Text Block]
us-gaap_StockholdersEquity
Total shareholders' equity
Balance
Balance
Change in unrealized losses / (gains) on available-for-sale debt securities, net of tax
The increase (decrease) in the unrealized gains (losses) of debt securities available-for-sale.
us-gaap_FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss
Financing Receivable, Accrued Interest, after Allowance for Credit Loss
Schedule of Other Nonoperating Expense, by Component [Table Text Block]
avbh_BrokeredDeposit
Brokered Deposit
The value of brokered deposits.
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block]
Total right-of-use assets
us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Revenue from Contract with Customer, Excluding Assessed Tax
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Commitments and contingent liabilities (Note 9)