Document And Entity Information
Note To Financial Statement Details Textual
Significant Accounting Policies
Income tax expense
Note 2 - Investment Securities
Note 3 - Loans and Allowance for Credit Losses on Loans
Note 4 - Goodwill
Note 5 - Core Deposit and Customer List Intangible Assets
Note 6 - Other Assets
Note 8 - Deposits
Note 9 - Securities Sold Under Agreements to Repurchase
Investment in Debt and Equity Securities and Other Trading Assets [Text Block]
Note 10 - Subordinated Debentures
Note 11 - FHLB Advances and Other Borrowings
Note 12 - Commitments and Contingent Liabilities
Note 13 - Assets and Liabilities Measured and Reported at Fair Value
Note 14 - Disclosure of Financial Instruments Not Reported at Fair Value
Note 15 - Mortgage Banking Activities
Note 16 - Accumulated Other Comprehensive Income (Loss)
Note 18 - Net Income Per Share
Note 19 - Stock-based Compensation
Note 20 - Derivative Financial Instruments
Note 21 - Regulatory Matters
Note 22 - Segments
Note 23 - Revenue From Contracts With Customers
Note 24 - Leases
Note 2 - Investment Securities - Available-for-sale Securities (Details)
Note 2 - Investment Securities - Held to Maturity Securities (Details)
Note 2 - Investment Securities - Securities by Contractual Maturity (Details)
Note 2 - Investment Securities - Securities With Unrealized Losses (Details)
Note 3 - Loans and Allowance for Credit Losses on Loans - Loans by Loan Portfolio Class (Details)
Note 3 - Loans and Allowance for Credit Losses on Loans - Allowance for Loan Losses (Details)
Note 3 - Loans and Allowance for Credit Losses on Loans - Non-accrual Loans (Details)
Note 3 - Loans and Allowance for Credit Losses on Loans - Aging of the Recorded Investment in Loans (Details)
Note 3 - Loans and Allowance for Credit Losses on Loans - Internally Assigned Risk Grades of Loans (Details)
Note 3 - Loans and Allowance for Credit Losses on Loans - Credit Card Loan Payment Activity (Details)
Note 4 - Goodwill - Carrying Value of Goodwill (Details)
Note 5 - Core Deposits and Customer List Intangible Assets (Details)
Note 5 - Core Deposit and Customer List Intangible Assets - Future Amortization Expense (Details)
Note 6 - Other Assets - Summary of Major Components of Other Assets (Details)
Compensation and employee benefits
us-gaap_LaborAndRelatedExpense
Note 8 - Deposits - Composition of Deposits (Details)
Note 9 - Securities Sold Under Agreements to Repurchase - Securities Sold Under Agreements to Repurchase (Details)
Interest and Other Income [Table Text Block]
Note 9 - Securities Sold Under Agreements to Repurchase - Repurchase Agreements (Details)
Note 10 - Subordinated Debentures - Subordinated Notes (Details)
Note 11 - FHLB Advances and Other Borrowings - Contractual Maturities and Average Effective Rates of Outstanding Advances (Details)
Note 12 - Commitments and Contingent Liabilities - Off Balance Sheet Commitments to Extend Credit (Details)
Note 13 - Assets and Liabilities Measured and Reported at Fair Value - Assets Measured at fair Value on a Recurring Basis (Details)
Note 13 - Assets and Liabilities Measured and Reported at Fair Value - Assets Measured at Fair Value on a Non-recurring Basis (Details)
Note 13 - Assets and Liabilities Measured and Reported at Fair Value - Significant Unobservable Inputs (Details)
Note 14 - Disclosure of Financial Instruments Not Reported at Fair Value - Fair Value of Financial Instruments (Details)
Note 15 - Mortgage Banking Activities - Activity in Mortgage Loans Held for Sale (Details)
Securities Sold under Agreements to Repurchase [Member]
Note 15 - Mortgage Banking Activities - Mortgage Banking Income (Details)
Note 15 - Mortgage Banking Activities - Changes in the Net Carrying Amount of MSRs (Details)
Note 15 - Mortgage Banking Activities - Notional amounts and Fair Values (Details)
us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet
Net change in accrued interest receivable and other assets
Note 16 - Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (loss) by Component (Details)
Note 18 - Net Income Per Share - Basic and Diluted Net Income Per Share (Details)
Note 18 - Net Income Per Share - Antidilutive SARs (Details)
Note 19 - Stock-based Compensation - Fair Value Assumptions (Details)
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
Note 19 - Stock-based Compensation - Stock-based Compensation Expense (Details)
Preferred Stock [Text Block]
Note 19 - Stock-based Compensation - Unrecognized Stock-based Compensation Expense (Details)
Note 19 - Stock-based Compensation - SARs Activity (Details)
Note 19 - Stock-based Compensation - Restricted Stock (Details)
Note 19 - Stock-based Compensation - Performance-based Restricted Stock Units (Details)
Note 20 - Derivative Financial Instruments - Outstanding Undesignated Interest Rate Swap (Details)
Note 21 - Regulatory Matters - Risk Based Capital Amounts and Ratios (Details)
Segment Reporting [Text Block]
Note 22 - Segments - Schedule of Segment Reporting Information (Details)
Note 23 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details)
Note 24 - Leases - Balance Sheet location (Details)
Notes To Financial Statements
Segment Reporting [Table Text Block]
Notes To Financial Statements [Abstract]
Preferred stock, no par value. Authorized 1,000,000 shares; no shares issued or outstanding
us-gaap_Liabilities
Total liabilities
Banking Regulation, Regulatory Capital Requirement, Compliance [Table]
Liabilities
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and equity
Pledged Status [Domain]
Segment Reporting [Table]
Pledged Status [Axis]
Lessee, Lease, Description [Table]
Other direct and indirect/allocated expenses
Amount of noninterest direct and indirect/allocated expenses.
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net change in cash and cash equivalents
us-gaap_ServicingAssetAtFairValueAmount
Mortgage servicing rights
Common Equity Tier 1 risk-based capital, actual ratio
US Government-sponsored Enterprises Debt Securities [Member]
Total risk-based capital, minimum for well capitalized ratio
Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum
Total risk-based capital, actual ratio
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Beginning cash and cash equivalents
Ending cash and cash equivalents
Additions for mortgage loans sold
us-gaap_ServicingAssetAtAmortizedValue
Mortgage servicing rights
Balance, beginning of period
Balance, end of period
Total risk-based capital, minimum for adequately capitalized ratio
Leverage, actual ratio
Tier 1 risk-based capital, minimum for adequately capitalized ratio
Leverage, minimum for adequately capitalized ratio
Leverage, minimum for well capitalized ratio
Banking Regulation, Tier 1 Leverage Capital Ratio, Well Capitalized, Minimum
Cash paid for operating lease liabilities
us-gaap_TimeDeposits
Total time deposits
Time deposits
Common Equity Tier 1 risk-based capital, minimum for adequately capitalized ratio
Common Equity Tier 1 risk-based capital, minimum for well capitalized ratio
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum
Tier 1 risk-based capital, minimum for well capitalized ratio
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum
Tier 1 risk-based capita, actual ratio
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Interest Rate
Stock issued for share-based awards, net of withholdings to satisfy employee tax obligations
Stock issued as an equity award for share-based compensation, net of the value of any shares withheld to satisfy employee tax obligations.
Mandatory forward contracts
us-gaap_DerivativeLiabilities
Derivative liabilities
Stock issued for share-based awards, net of withholdings to satisfy employee tax obligations (in shares)
Shares of stock issued as an equity award for share-based compensation, net of any shares withheld to satisfy employee tax obligations.
sybt_SharesCancelledShares
Shares cancelled (in shares)
The amount of shares issued and outstanding cancelled as of the period date.
Shares cancelled
Shares cancelled
The value of shares issued and outstanding which were cancelled in the period.
us-gaap_BankingRegulationCapitalConservationBufferCapitalConservedMinimum
Banking Regulation, Capital Conservation Buffer, Capital Conserved, Minimum
Financing Receivable, Allowance for Credit Loss [Table Text Block]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Outstanding (in shares)
Outstanding (in shares)
Outstanding, weighted average fair value (in dollars per share)
Unvested, grant date weighted average cost (in dollars per share)
Unvested, grant date weighted average cost (in dollars per share)
Granted (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)
Financing Receivable, Past Due [Table Text Block]
Granted, weighted average fair value (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Forefeited (in shares)
Financing Receivable Credit Quality Indicators [Table Text Block]
Legal and professional
Average interest rate during the period
Vested in the current year, weighted average fair value (in dollars per share)
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Total estimated expense
Vested in the current year (in shares)
Origination of mortgage loans held for sale
Greater than five years
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total lease payments
Proceeds from sale of mortgage loans held for sale
Weighted average discount rate
Asset Class [Axis]
One year or less
Year five
Vesting period (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant
Measurement Frequency [Axis]
Year three
Commitments and Contingencies Disclosure [Text Block]
Year two
Schedule of Unrealized Losses on Securities [Table Text Block]
For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value).
Liability Class [Axis]
Fair Value Hierarchy and NAV [Axis]
Year four
Common Stock, Shares, Issued (in shares)
Common Stock, Shares, Outstanding (in shares)
Award Type [Domain]
Risk free interest rate
Common Stock, Shares Authorized (in shares)
Expected volatility
Dividend yield
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Common stock, no par value. Authorized 40,000,000 shares; issued and outstanding 29,516,000 and 29,476,000 shares in 2026 and 2025, respectively
Short-Term Debt, Type [Domain]
us-gaap_PolicyTextBlockAbstract
Accounting Policies
sybt_PolicyTable
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
Comprehensive Income (Loss) Note [Text Block]
Short-Term Debt, Type [Axis]
Weighted average interest rate at end of period
Outstanding balance at end of period
Subsequent Events [Text Block]
Significant Accounting Policies [Text Block]
Construction and Development [Member]
Information pertaining to construction and development.
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less imputed interest
Operating lease liability
Debit and credit card processing
Amount of noninterest expense associated with debt and credit card processing.
Federal funds purchased and other short-term borrowings
Interest expense incurred during the reporting period on federal funds purchased and other short-term borrowings.
sybt_ProceedsUsedForAndReceivedFromSettlementOfStockAwards
Proceeds (Used for) and Received from Settlement of Stock Awards
The cash inflow or outflow resulting from settlement of stock awards.
Standby Letters of Credit [Member]
us-gaap_LongTermDebt
Carrying value
Offsetting Assets [Table]
Statement of Stockholders' Equity [Abstract]
Statement of Comprehensive Income [Abstract]
Loss Contingency Nature [Axis]
WM&T [Member]
Information pertaining to Wealth Management & Trust ("WM&T").
Statement of Cash Flows [Abstract]
Stockholders’ equity
Core Deposits [Member]
Equity Components [Axis]
Equity Component [Domain]
Offsetting Liabilities [Table Text Block]
Offsetting Liabilities [Table]
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
AOCI Attributable to Parent [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseGross
Gross amount of recognized liabilities
Loss Contingency, Nature [Domain]
sybt_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedDueYearTwo
2028
Unrecognized cost of unvested share-based compensation awards due in second fiscal year following latest fiscal year.
sybt_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedRemainderOfFiscalYear
Remainder of 2026
Unrecognized cost of unvested share-based compensation awards due in remainder of fiscal year following latest fiscal year ended.
sybt_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedDueYearFive
2031
Unrecognized cost of unvested share-based compensation awards due in fifth fiscal year following latest fiscal year.
Subordinated debentures
us-gaap_SubordinatedDebt
Subordinated Debt
sybt_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedDueYearFour
2030
Unrecognized cost of unvested share-based compensation awards due in fourth fiscal year following latest fiscal year.
sybt_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedDueYearThree
2029
Unrecognized cost of unvested share-based compensation awards due in third fiscal year following latest fiscal year.
us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseAsset
Gross amount offset in the balance sheet
Loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss
Vested and exercisable (in shares)
Number of fully vested and exercisable equity instruments other than options that may be converted into shares.
Subsequent Event Type [Domain]
Financing Receivable, Nonaccrual [Table Text Block]
Exercised (in shares)
Exercised (in shares)
The number of exercises during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).
Subsequent Event [Table]
Unvested (in shares)
Number of unvested equity instruments other than options.
Subsequent Event Type [Axis]
sybt_OperatingLeaseRemainingLeaseTerm
Operating Lease, Remaining Lease Term
Represents the remaining lease term of operating leases.
Change in mortgage servicing rights valuation allowance
Impairment
Detail Regarding Operating Leases of Lessee [Table Text Block]
Tabular disclosure of a wide range of details regarding operating leases of a lessee.
Granted, exercise price (in dollars per share)
The exercise price at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).
sybt_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingExercisePrice
Outstanding, exercise price (in dollars per share)
Outstanding, exercise price (in dollars per share)
The exercise price of outstanding awards on equity-based plans excluding option plans.
Vested and exercisable, exercise price (in dollars per share)
The exercise price for vested and exercisable equity-based awards excluding options.
Vested in the current year, exercise price (in dollars per share)
Exercise price of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss
Securities available-for-sale, amortized cost
Total available for sale debt securities, amortized cost
Exercised, exercise price (in dollars per share)
Exercise price as of the grant date of equity-based award plans other than stock (unit) option plans that were exercised.
Exercised, exercised weighted average fair value (in dollars per share)
Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were exercised.
Vested and exercisable, aggregate intrinsic value
Intrinsic value of equity-based compensation awards vested and exercisable. Excludes stock and unit options.
Exercised, aggregate intrinsic value
Intrinsic value of equity-based compensation awards exercised. Excludes stock and unit options.
Unvested, exercise price (in dollars per share)
The exercise price for unvested equity-based awards excluding options.
Vested and exercisable, weighted average remaining contractual life (Year)
Weighted average remaining contractual term for vested and exercisable equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
Credit Card Receivable [Member]
Intangible Asset and Goodwill [Text Block]
Unvested, weighted average fair value (in dollars per share)
The weighted average fair value of unvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan)
Vested and exercisable, weighted average fair value (in dollars per share)
The weighted average fair value of vested and exercisable awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan)
Credit Cards [Member]
Information pertaining to credit cards.
us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest
Schedule of Off Balance Sheet Commitments to Extend Credit [Table Text Block]
Tabular disclosure of off balance sheet commitments to extend credit.
us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest
Allowance for credit losses on loans
Beginning balance
Ending balance
Share-Based Payment Arrangement, Option and Stock Appreciation Rights, Activity [Table Text Block]
Unvested, weighted average remaining contractual life (Year)
Weighted average remaining contractual term for uvnested equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
Future Loan Commitments [Member]
Information pertaining to future loan commitments.
us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest
Other Off Balance Sheet Commitments [Member]
Information pertaining to other off balance sheet commitments.
Letters of Credit [Member]
Information pertaining to letters of credit.
Overdrafts [Member]
Information pertaining to overdrafts.
Home Equity Loans [Member]
Information pertaining to home equity loans.
Commercial and Industrial Loans [Member]
Information pertaining to commercial and industrial loans.
us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
Four Years before Current Fiscal Year
us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
More than Five Years before Current Fiscal Year
us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
Two Years before Current Fiscal Year
us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
Three Years before Current Fiscal Year
us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
Current Fiscal Year
us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
Fiscal Year before Current Fiscal Year
Share-Based Payment Arrangement, Nonvested Award, Cost [Table Text Block]
Supplemental cash flow information:
Schedule of Nonvested Share Activity [Table Text Block]
us-gaap_FinancingReceivableExcludingAccruedInterestRevolving
Revolving
sybt_TradingActivityChargesReducingProductSalesCommissionsAndFees
Trading Activity Charges Reducing Product Sales Commissions and Fees
Represents the amount of trading activity charges during the period, reducing product sales commissions and fees.
Schedule of Interest Rate Derivatives [Table Text Block]
us-gaap_LongTermDebtFairValue
FHLB advances
Mortgage loans held for sale
us-gaap_MortgagesHeldForSaleFairValueDisclosure
Customer Lists [Member]
Compensation
Mortgage banking income
us-gaap_FeesAndCommissionsMortgageBankingAndServicing
Tier 1 risk-based capital, minimum for adequately capitalized amount
Other Commitments [Table]
Tier 1 risk-based capital, minimum for well capitalized amount
Tier 1 risk-based capital, actual amount
Common Stock, No Par Value (in dollars per share)
Leverage, minimum for adequately capitalized amount
Leverage, minimum for well capitalized amount
Leverage, actual amount
us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax
Total net expense
us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities
Investment securities posted as collateral
Three Month Advance Maturing November 2023 [Member]
Represents a three month advance maturing November 2023.
Interest Rate Swap Maturing August 6, 2029 [Member]
Represents an interest rate swap maturing August 6, 2029.
Three Month Advance Maturing November 2024 [Member]
Relating to three month advance maturing November 2024.
Debt Disclosure [Text Block]
Use of Estimates, Policy [Policy Text Block]
Interest Rate Swap Maturing February 6, 2028 [Member]
Represents an interest rate swap maturing February 6, 2028.
Other Assets Disclosure [Text Block]
Total risk-based capital, minimum for adequately capitalized amount
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Lessee, Operating Leases [Text Block]
us-gaap_DebtInstrumentCarryingAmount
Face Value
us-gaap_NoninterestExpense
Total non-interest expenses
Non-interest expenses:
Schedule of Other Assets [Table Text Block]
Financial Asset, Not Past Due [Member]
Total risk-based capital, minimum for well capitalized amount
Schedule of Debt [Table Text Block]
sybt_InterestIncomeFederalHomeLoanBankStock
Federal Home Loan Bank stock
Interest income on federal home loan bank stock.
Stock Appreciation Rights (SARs) [Member]
Restricted Stock Units (RSUs) [Member]
Debt Instrument, Name [Domain]
Schedule of Long-Term Debt Instruments [Table]
Debt Instrument [Axis]
Cash flows from operating activities:
Cash flows from investing activities:
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash provided by operating activities
Cash flows from financing activities:
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash (used in) provided by financing activities
Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block]
Kentucky Bancshares [Member]
Information related to Kentucky Bancshares.
Net change in securities sold under agreements to repurchase and federal funds purchased
Net change in deposits
sybt_NumberOfBranches
Number of Branches
Represents number of benches.
Accounting Policies [Abstract]
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]
Mortgage-Backed Securities, Issued by Private Enterprises [Member]
US States and Political Subdivisions Debt Securities [Member]
Segments [Axis]
us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss
Net loans
us-gaap_PaymentsForProceedsFromLoansAndLeases
Net change in loans
Measurement Input Type [Axis]
Securities available-for-sale
Available for sale debt securities (amortized cost of $773,658 in 2026 and $801,371 in 2025, respectively)
Securities available-for-sale, fair value
Total available for sale debt securities, fair value
Held to maturity debt securities (fair value of $175,255 in 2026 and $181,203 in 2025, respectively)
Securities held-to-maturity, carrying value
Total held to maturity debt securities, carrying value
Deferred income tax expense
Measurement Input, Discount Rate [Member]
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]
Measurement Input, Default Rate [Member]
Net income
Net income
Net income
Measurement Input, Prepayment Rate [Member]
Net income
us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Financial Asset, Past Due [Member]
sybt_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssetsIncludingCapitalConservationBuffer
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Including Capital Conservation Buffer
Represents tier one risk based capital required for capital adequacy to risk weighted assets including capital conservation buffer.
sybt_CapitalRequiredForCapitalAdequacyToRiskWeightedAssetsIncludingCapitalConservationBuffer
Capital Required for Capital Adequacy to Risk Weighted Assets Including Capital Conservation Buffer
Represents capital required for capital adequacy to risk weighted assets including capital conservation buffer.
Net gain realized on sale of mortgage loans held for sale
Gain on sale of mortgage loans held for sale
us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset
Measurement Input Type [Domain]
us-gaap_InterestIncomeExpenseNet
Net interest income
Accumulated Other Comprehensive Income (Loss) [Table]
us-gaap_OtherRealEstateOwnedMeasurementInput
Other real estate owned, measurement input
us-gaap_ServicingAssetMeasurementInput
Servicing Asset, Measurement Input
Accounting Standards Update and Change in Accounting Principle [Table]
us-gaap_DeferredTaxAssetsLiabilitiesNet
Net deferred tax asset
Supplemental non-cash activity:
Net occupancy and equipment
Net occupancy and equipment
Other
FDIC insurance
Technology and communication
Technology and communication
Bank owned life insurance
us-gaap_BankOwnedLifeInsuranceIncome
Bank owned life insurance income
Non-interest income
us-gaap_NoninterestIncome
Total non-interest income
Non-interest income:
Postage, printing and supplies
WM&T fees receivable
Measurement Basis [Axis]
us-gaap_GainsLossesOnSalesOfOtherRealEstate
Other real estate owned, gains (losses)
Other (2)
us-gaap_NoninterestIncomeOtherOperatingIncome
us-gaap_ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance
Vesting [Axis]
Vesting [Domain]
Maturity Date
us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal
Provision for credit losses
Marketing and business development
Recoveries
us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff
Charge-offs
Current period gross charge offs
Non-owner Occupied [Member]
Related to non-owner occupied loans.
us-gaap_AssetsUnderManagementCarryingAmount
Assets under Management, Carrying Amount
Term [Member]
Related to term loans.
Owner Occupied [Member]
Related to owner occupied loans.
dei_DocumentType
Document Type
Document Information [Line Items]
Document Quarterly Report
us-gaap_LesseeOperatingLeaseRenewalTerm
Lessee, Operating Lease, Renewal Term
Weighted average remaining lease term (years) (Year)
Document Information [Table]
Due after 10 years, HTM, carrying value
Due after one year but within five years, HTM, carrying value
Dilutive securities (in shares)
dei_EntityInteractiveDataCurrent
Entity Interactive Data Current
Due after five years but within 10 years, HTM, carrying value
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)
Document Transition Report
Diluted (in shares)
Weighted average shares outstanding- diluted (in shares)
Due within one year, HTM, carrying value
Lines of Credit [Member]
Related to lines of credit.
Mortgage backed securities - government agencies, HTM, carrying value
Basic (in shares)
Weighted average shares outstanding - basic (in shares)
Derivative Instrument [Axis]
Troubled Debt Restructurings, excluding non-accrual loans
Non-accrual with no allowance
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage
Granted, aggregate intrinsic value
The value of shares granted in a share-based compensation arrangement, other than options, during the period.
Non-accrual loans
us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestNonaccrual
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Nonaccrual
Interest bearing demand
Interest bearing
Total interest bearing deposits
Accounts Receivable and Equipment [Member]
Related to accounts receivable and equipment.
Title and Position [Domain]
us-gaap_Deposits
Total deposits
Deposits
Deposit Liabilities Disclosures [Text Block]
Money market
Non-interest bearing demand deposits
Non-interest bearing
Depreciation, amortization and accretion, net
Document Fiscal Period Focus
Pledging Purpose [Axis]
Document Fiscal Year Focus
Pledging Purpose [Domain]
Savings
Amendment Flag
Common Stock [Member]
dei_DocumentPeriodEndDate
Document Period End Date
Interest income:
Outstanding, aggregate intrinsic value
Vested in the current year, aggregate intrinsic value
Legal Entity [Axis]
Interest income
us-gaap_InterestAndDividendIncomeOperating
Total interest income
Fair value
us-gaap_DerivativeFairValueOfDerivativeNet
Derivative, Fair Value, Net
dei_EntityFileNumber
Entity File Number
Fixed rate
Entity Tax Identification Number
Term, Excluding PPP [Member]
Represents term, excluding PPP loans.
us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Securities available-for-sale, less than 12 months, unrealized losses
us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Securities available-for-sale, 12 months or more, unrealized losses
Entity [Domain]
Entity Central Index Key
Unvested, aggregate intrinsic value
dei_EntityRegistrantName
Entity Registrant Name
dei_EntityCurrentReportingStatus
Entity Current Reporting Status
Entity Incorporation, State or Country Code
Current Fiscal Year End Date
Entity Filer Category
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
Business Combination, Recognized Asset Acquired, Asset
dei_EntityShellCompany
Entity Shell Company
Entity Emerging Growth Company
us-gaap_DerivativeNotionalAmount
Notional Amount
Entity Small Business
Hedging Designation [Domain]
Derivative
Derivative assets
Derivative assets
Fair value
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Financinng Receivable, Schedule of Payment Activity [Table Text Block]
Tabular disclosure of payment activity for financing receivables.
Derivative Instruments and Hedging Activities Disclosure [Text Block]
us-gaap_DerivativeAssetNotionalAmount
Derivative, notional amount
us-gaap_DerivativeLiabilityNotionalAmount
Derivative, notional amount
us-gaap_BusinessCombinationConsiderationTransferred1
Business Combination, Consideration Transferred
Entity Address, State or Province
Entity Address, City or Town
Entity Address, Address Line One
sybt_GainsLossesOnCollateralDependentLoans
Collateral dependent loans, gains (losses)
The amount of gains (losses) on collateral dependent loans.
dei_CityAreaCode
City Area Code
dei_LocalPhoneNumber
Local Phone Number
Entity Address, Postal Zip Code
Derivative [Table]
Mortgage-backed securities – government agencies, AFS, fair value
Title of 12(b) Security
Security Exchange Name
Trading Symbol
Mortgage-backed securities – government agencies, AFS, amortized cost
Subsidiaries [Member]
Variable Rate [Domain]
Related Party Transaction [Domain]
Regulatory Capital Requirements for Mortgage Companies Disclosure [Text Block]
dei_EntityCommonStockSharesOutstanding
Entity Common Stock, Shares Outstanding (in shares)
Related Party Transaction [Axis]
Earnings Per Share [Text Block]
Preferred Stock, No Par Value (in dollars per share)
Preferred Stock, No Par Value (in dollars per share)
Executive Officer [Member]
Hedging Designation [Axis]
Director [Member]
Change in unrealized gain (loss) on AFS debt securities
Internal Credit Assessment [Axis]
Debt Securities, Held-to-Maturity [Table]
Other Debt Obligations [Member]
us-gaap_ProfitLoss
Net income
Debt Securities, Held-to-Maturity [Table Text Block]
us-gaap_SecuritySoldUnderAgreementToRepurchaseAfterOffsetSubjectToMasterNettingArrangement
Net amount of liabilities presented in the balance sheet
Debt Securities, Held-to-Maturity, Fair Value
Securities held-to-maturity, fair value
Total held to maturity debt securities, fair value
Weighted average outstanding shares
Investments Classified by Contractual Maturity Date [Table Text Block]
Internal Credit Assessment [Domain]
us-gaap_PaymentsForProceedsFromOtherInvestingActivities
Other investment activities
us-gaap_SecuritySoldUnderAgreementToRepurchaseAfterOffsetAndDeductionSubjectToMasterNettingArrangement
Net amount
Other liabilities
Capital and deposit based taxes
us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Allowance for loans, individually evaluated for impairment
Mortgage backed securities - government agencies, HTM, fair value
Regulatory Capital Requirements under Banking Regulations [Text Block]
Total assets
us-gaap_Assets
Total assets
Assets
us-gaap_NotesReceivableGross
Financing Receivable, before Allowance for Credit Loss
Net income per share - diluted (in dollars per share)
Other Collateral [Member]
Related to other collateral.
sybt_ImpairedLoansFairValue
Collateral dependent loans
The fair value amount of impaired loans.
Other real estate owned
Treasury Management [Member]
Refers to information regarding treasury management.
sybt_ImpairedLoansMeasurementInput
Collateral dependent loans, measurement input
Value of input used to measure impaired loans.
Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block]
Intangible Asset [Text Block]
Accounts and Financing Receivables [Table]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Intangible Asset, Finite-Lived [Table Text Block]
us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
Comprehensive income
Intangible Asset, Finite-Lived [Table]
us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff
Current period gross charge offs, More than Five Years before Current Fiscal Year
us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff
Current period gross charge offs, Revolving
us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff
Current period gross charge offs, Three Years before Current Fiscal Year
us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff
Current period gross charge offs, Four Years before Current Fiscal Year
us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff
Current period gross charge, Fiscal Year before Current Fiscal Year offs
us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff
Current period gross charge offs, Two Years before Current Fiscal Year
us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff
Current period gross charge offs, current fiscal year
Hedging Relationship [Domain]
Shares forfeited, grant date weighted average cost (in dollars per share)
us-gaap_PaymentsOfDividends
Cash dividends paid
Stock, Class of Stock [Table]
Investment Advisory, Management and Administrative Service [Member]
us-gaap_PaymentsForOriginationOfMortgageLoansHeldForSale
Origination of mortgage loans held for sale
us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings
Payments of FHLBank Borrowings, Financing Activities
Credit and Debit Card [Member]
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Fiduciary and Trust [Member]
Statistical Measurement [Axis]
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Trading Arrangements, by Individual [Table]
Deposit Account [Member]
Material Terms of Trading Arrangement [Text Block]
Financial Instrument [Axis]
us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss
Securities held-to-maturity, losses
Securities held-to-maturity, gains
Product and Service, Other [Member]
us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Securities available-for-sale, unrealized losses
Minimum [Member]
Securities available-for-sale, unrealized gains
Statistical Measurement [Domain]
Maximum [Member]
Performance Guarantee [Member]
us-gaap_DebtSecuritiesAvailableForSaleRestricted
Debt Securities, Available-for-Sale, Restricted
Counterparty Name [Axis]
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Effective Income Tax Rate Reconciliation, Percent
Debt Securities, Available-for-Sale [Table]
us-gaap_DividendsCommonStockCash
Cash dividends declared
Performance Shares [Member]
Financial Instruments [Domain]
Common Stock, Dividends, Per Share, Declared (in dollars per share)
Asset Pledged as Collateral [Member]
Weighted Average [Member]
Counterparty Name [Domain]
Outstanding, weighted average remaining contractual life (Year)
Securities available-for-sale, 12 months or more, fair value
Securities available-for-sale, less than 12 months, fair value
Award Type [Axis]
Adjustments to reconcile net income to net cash provided by operating activities:
Expense
Consolidation Items [Axis]
Title and Position [Axis]
sybt_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedDueYearOne
2027
Unrecognized cost of unvested share-based compensation awards due in the first fiscal year following latest fiscal year.
Premises held for sale
us-gaap_ShareBasedCompensation
Stock compensation expense
Subsequent Event [Member]
us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Deferred tax benefit
Consolidation Items [Domain]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)
Share-Based Payment Arrangement [Text Block]
Change in fair value of derivatives used in cash flow hedge
Preferred Stock, Shares Issued (in shares)
Preferred Stock, Shares Issued (in shares)
Preferred Stock, Shares Outstanding (in shares)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Preferred Stock, Shares Authorized (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]
Estimate of Fair Value Measurement [Member]
New Accounting Pronouncements, Policy [Policy Text Block]
Antidilutive Securities, Name [Domain]
Share-Based Payment Arrangement, Tranche One [Member]
Statement [Table]
Reclassification, Comparability Adjustment [Policy Text Block]
us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
Securities available-for-sale, unrealized losses
us-gaap_LoansReceivableFairValueDisclosure
Loans, net
Securities available-for-sale, fair value
us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions
Average outstanding balance during the period
us-gaap_SecuritiesLoanedOrSoldUnderAgreementsToRepurchaseFairValueDisclosure
Securities sold under agreement to repurchase
Long-Term Debt, Type [Axis]
Maximum outstanding at any month end during the period
us-gaap_FederalFundsPurchasedFairValueDisclosure
Federal funds purchased
Product and Service [Domain]
Product and Service [Axis]
Correspondent Banks [Member]
Related to correspondent banks.
Consolidated Entities [Axis]
Consolidated Entities [Domain]
King Southern Bancorp [Member]
Represents the King Southern Bancorp.
Product Sales Commissions and Fees [Member]
Related to product sales commissions and fees.
us-gaap_PrincipalAmountOutstandingOnLoansManagedAndSecuritized
Loan, Managed and Securitized or Asset-Backed Financing Arrangement, Principal Outstanding
Assets
Austin State Bank [Member]
Represents Austin State Bank.
Statement [Line Items]
2028
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
2029
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
2027
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
Accrued interest payable
Accrued interest payable
us-gaap_MortgageLoansInProcessOfForeclosureAmount
Mortgage Loans in Process of Foreclosure, Amount
Remainder of 2026
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear
2030
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
Federal funds sold and interest bearing due from banks
Federal funds purchased
sybt_FederalFundsCorrespondingBanksMaximumAmountAvailable
Federal Funds Corresponding Banks Maximum Amount Available
The maximum amount available to draw of federal funds from corresponding banks.
Residential Real Estate Portfolio Segment [Member]
Portfolio segment of the company's total financing receivables related to residential real estate.
Commonwealth Statutory Trust III [Member]
Represents Commonwealth Statutory Trust III.
Commonwealth Statutory Trust IV [Member]
Represents Commonwealth Statutory Trust IV
Federal Home Loan Bank Advances, Disclosure [Text Block]
Commonwealth Statutory Trust V [Member]
Represents Commonwealth Statutory Trust V.
Rate Lock Loan Commitments [Member]
Represents rate lock loan commitments.
Mandatory Forward Contract [Member]
Represents mandatory forward contracts.
Related Party [Member]
Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]
us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available
Proceeds from maturities and paydowns of held to maturity debt securities
us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresInterestRateAtPeriodEnd
Weighted average interest rate at end of period
Mortgage loans held for sale, at fair value
Balance, beginning of period:
Balance, end of period
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
sybt_GainLossOnSaleOfMortgageLoansAndFairValueChangesInLoansAndDerivatives
Net gain recognized
The amount of gain (loss) on the sale of mortgage loans and fair value changes in loans and derivatives.
Federal Home Loan Bank Advances [Member]
sybt_PaymentsOfFhlbankBorrowingsFinancingActivitiesNetOfShortTermMaturities
Repayments of FHLB advances
Payments of FHLBank Borrowings, Financing Activities, Net of Short Term Maturities
Amount of cash outflow for repayment of Federal Home Loan Bank (FHLBank) borrowing, classified as financing activity, net of maturities of 90 days or less.
Proceeds from FHLB advances
Proceeds from FHLBank Advance, Investing Activities, Net of Short Term Maturities
Amount of cash inflow from collection of advance by Federal Home Loan Bank (FHLBank), classified as investing activity, net of advances with maturities of 90 days or less.
Net loan servicing income
The amount of loan servicing income.
sybt_NetServicingIncomeLoss
Net servicing income recognized
The amount of net servicing income (loss).
us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations
Subordinated debentures
sybt_MortgageBankingIncomeLoss
Total mortgage banking income
The amount of mortgage banking income (loss).
sybt_BusinessCombinationUnconsolidatedTrustSubsidiariesAcquiredPercent
Business Combination, Unconsolidated Trust Subsidiaries Acquired, Percent
The percent of unconsolidated trust subsidiaries acquired under business combination.
Changes in Carrying Amount of MSRs [Table Text Block]
Tabular disclosure in changes in carrying amount of MSRs.
sybt_SharebasedPaymentArrangementExpenseExcessTaxBenefit
Excess tax benefit from share-based compensation arrangements
The excess tax benefit from share-based payment arrangement expense.
Proceeds from sale or disposal of premises and equipment
Federal Home Loan Bank, Advance, Branch of FHLBank [Table]
Federal Home Loan Bank stock, at cost
Mortgage Loans Held for Sale and Mortgage Banking Derivatives [Table Text Block]
Tabular disclosure for mortgage loans held for sale and mortgage banking derivatives.
sybt_MortgageLoansHeldForSaleFairValue
Mortgage loans held for sale, at fair value
The fair value of mortgage loans held for sale.
sybt_MortgageLoansHeldForSaleCarryingAmount
Mortgage loans held for sale, at carrying amount
The carrying amount of mortgage loans held for sale.
us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent
Total other comprehensive income (loss) before income tax effect
Due after one year but within five years, AFS, amortized cost
Other comprehensive income (loss):
Due after five years but within 10 years, AFS, amortized cost
Intangible Asset, Finite-Lived, Class [Axis]
Due within one year, AFS, amortized cost
Intangible Asset, Finite-Lived, Class [Domain]
Financing Receivable Portfolio Segment [Axis]
Due after five years but within 10 years, AFS, fair value
Due after 10 years, AFS, fair value
Due within one year, AFS, fair value
Due after one year but within five years, AFS, fair value
Due after 10 years, AFS, amortized cost
Other comprehensive income (loss)
Total other comprehensive income (loss) net of tax
Long-Term Debt, Type [Domain]
Due after five years but within 10 years, HTM, fair value
Due after 10 years, HTM, fair value
Due within one year, HTM, fair value
Financing Receivable Portfolio Segment [Domain]
Due after one year but within five years, HTM, fair value
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]
Fair Value Measurements, Nonrecurring [Table Text Block]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 3 [Member]
Fair Value, Inputs, Level 1 [Member]
Real Estate [Member]
Financial Instrument Performance Status [Domain]
Premises and equipment, net
Financial Asset, Aging [Axis]
Financial Instrument Performance Status [Axis]
Prepaid assets
Financial Asset, Aging [Domain]
Change in unfunded commitments in tax credit investments
Amount of unfunded commitments in tax credit investments.
Financial Asset, 30 to 59 Days Past Due [Member]
Stock compensation expense
us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax
Income tax benefit (expense)
Financial Asset, 60 to 89 Days Past Due [Member]
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Fair Value Disclosures [Text Block]
Net change in fair value recognized on forward contracts
Fair Value, by Balance Sheet Grouping [Table Text Block]
sybt_DebtSecuritiesHeldtomaturityContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Securities HTM, 12 months or more, unrealized losses
Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for 12 months or longer.
us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Securities HTM, fair value
Fair value of investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.
sybt_DebtSecuritiesHeldtomaturityUnrealizedLossPositionAccumulatedLoss
Securities HTM, unrealized losses
Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.
Secured Overnight Financing Rate (SOFR) [Member]
Securities HTM, less than 12 months, fair value
Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for less than 12 months.
sybt_DebtSecuritiesHeldtomaturityContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Securities HTM, less than 12 months, unrealized losses
Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for less than 12 months.
Securities HTM, 12 months or more, fair value
Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for 12 months or longer.
Collateral Held [Domain]
Collateral Held [Axis]
us-gaap_AccruedFeesAndOtherRevenueReceivable
Accrued Fees and Other Revenue Receivable
Gain on sale of premises and equipment (1)
Gain on sale of premises and equipment
Gain on the sale of premises and equipment
Accumulated other comprehensive loss
Accumulated amortization
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income before income tax expense
Additional paid-in capital
Weighted average maturity (years) (Year)
Fair value at grant date (Year)
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)
Commercial and Industrial Portfolio Segment [Member]
Portfolio segment of the company's total financing receivables related to loans for commercial and industrial purpose.
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchases of premises and equipment
Collateral Pledged [Member]
sybt_SharebasedCompensationArrangementBySharebasedPaymentAwardPostVestingHoldingPeriod
Sharebased Compensation Arrangement by Share-based Payment Award Post Vesting Holding Period (Year)
The post-vesting holding period for grants.
sybt_SharebasedCompensationArrangementBySharebasedPaymentAwardLiquidityDiscount
Share-based Compensation Arrangement by Share-based Payment Award Liquidity Discount
The liquidity discount on share-based compensation awards.
Goodwill [Table]
us-gaap_OffBalanceSheetCreditLossLiability
Off-Balance-Sheet, Credit Loss, Liability
Employee benefits
us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent
Net current period other comprehensive income (loss)
us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent
Other comprehensive income (loss) before reclassifications
Home Equity Line of Credit [Member]
Federal Home Loan Bank advances
Advance from Federal Home Loan Bank
us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt
Purchases of available for sale debt securities
Proceeds from maturities and paydowns of available for sale debt securities
Field & Main Bancorp, Inc. [Member]
Relating to Field & Main Bancorp, Inc.
us-gaap_LiabilitiesFairValueDisclosure
Total liabilities
Liabilities, Fair Value Disclosure
sybt_BusinessCombinationRecognizedAssetAcquiredAssetsUnderManagement
Business Combination, Recognized Asset Acquired, Assets Under Management
Amount of assets under management acquired in business combination and recognized at acquisition date.
us-gaap_AssetsFairValueDisclosure
Total assets
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Operating Segments [Member]
Thereafter
sybt_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour
Amount of amortization for asset, excluding financial asset and goodwill, lacking physical substance with finite life expected to be recognized 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).
Segments [Domain]
Paying [Member]
Represents the interest rate swap contract where the entity is considered as the paying party.
Receiving [Member]
Represents the interest rate swap contract where the entity is considered as the receiving party.
Income Statement [Abstract]
us-gaap_OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal
Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)
Commercial Banking [Member]
Information pertaining to the commercial banking segment of the entity. Commercial banking provides a full range of loan and deposit products to individuals, consumers and businesses. Commercial banking also includes the entity's mortgage origination and securities brokerage activity.
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
us-gaap_OtherAssetsMiscellaneous
Other
sybt_GuaranteeObligationsAgreementTerm
Guarantee Obligations, Agreement Term
Represents the term of agreements entered into by the entity for undertaking guarantee obligation.
us-gaap_AmortizationOfMortgageServicingRightsMSRs
Amortization of mortgage servicing rights
Intangible amortization
Intangible amortization
Intangible Asset, Finite-Lived, Amortization Expense
sybt_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsFairValueGranted
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Fair Value Granted
Fair value of equity-based compensation awards granted. Excludes stock and unit options.
Schedule of Share-based Compensation Arrangement by Share-based Payment Award Fair Value Assumptions and Methodology [Table Text Block]
Tabular disclosure of the significant assumptions used during the period to estimate the fair value of stock-based compensation awards, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.
Investment Management and Trust [Member]
Information pertaining to the investment management and trust segment of the entity. Investment management and trust provides wealth management services including investment management, trust and estate administration, and retirement plan services.
us-gaap_ProceedsFromFederalHomeLoanBankAdvances
Proceeds from FHLBank Advance, Investing Activities
sybt_NoninterestIncomeExcludingFeesAndCommissionsFromFiduciaryAndTrustActivities
All other non-interest income
Amount of noninterest income excluding income from fees and commissions from investment management and trust services.
Appraisal Discount Method [Member]
Represents the appraisal valuation technique used to measure fair value.
Impaired Loans [Member]
Represents information pertaining to the impaired loans.
Income Tax Disclosure [Text Block]
Mortgage Servicing Rights [Member]
Represents pertaining to Mortgage Servicing rights.
Restricted Stock [Member]
Investments in tax credit partnerships
Represents the amount of investments in tax credit related ventures.
us-gaap_FinancingReceivableNonaccrualInterestIncome
Financing Receivable, Nonaccrual, Interest Income
Net change in fair value recognized on loans held for sale
Net gain or loss on loans held-for-sale.
Net change in fair value recognized on rate lock loan commitments
Net gain or loss on rate lock loan commitments.
Other mortgage banking income
Amount of other mortgage banking income.
Proceeds from the sale of mortgage loans held for sale
Amount of loan receivable held-for-sale acquired through business acquisition.
sybt_LesseeOperatingLeaseLeaseYetCommencedNumberOfLease
Lessee, Operating Lease, Lease yet Commenced, Number of Lease
Number of leases that are enter but yet commenced.
sybt_DebtSecuritiesHeldtomaturityFairValueTotal
HTM debt securities
Fair value of investment in debt security measured at amortized cost (held-to-maturity)..
Other time deposits
Amount of interest bearing other time deposits. Time deposits bear interest for a fixed, stated period of time and include certificate of deposits and individual retirement accounts.
Fair Value Hierarchy and NAV [Domain]
Loans transferred to OREO
Measurement Frequency [Domain]
Schedule of Maturities and Average Effective Interest Rates of Federal Home Loan Bank Advances Disclosure [Table Text Block]
Tabular disclosure of the contractual maturities and average effective rates of Federal Home Loan Bank advances.
Statement of Financial Position [Abstract]
Deposit Liability [Table]
Time deposits of $250 thousand or more
Income taxes paid, net of refunds
sybt_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesReleasedDueToRestrictionLapsed
Restrictions lapsed and shares vested (in shares)
Represents the number of equity-based payment instruments, excluding stock (or unit) options, that were released to employees/directors due to restrictions lapsed during the reporting period.
Restrictions lapsed and shares vested, grant date weighted average cost (in dollars per share)
Represents the weighted-average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were that are released to employees/directors due to restrictions lapsed during the reporting period.
sybt_OtherRealEstateOwnedFairValueDisclosure
Other real estate owned
The fair value related to other real assets owned fair value disclosure.
Other assets
Total other assets
sybt_InvestmentInFederalHomeLoanBankStockAndOtherSecuritiesFairValueDisclosure
Federal Home Loan Bank stock
Represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount shown on the entity's books for investments made in Federal Home Loan Bank stock and other securities.
Repurchase Agreement, Counterparty [Table]
Fair Value, Nonrecurring [Member]
Fair Value, Recurring [Member]
Common Equity Tier 1 risk-based capital, actual amount
Common Equity Tier 1 risk-based capital, minimum for adequately capitalized amount
sybt_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits
Amount of deposits assumed at the acquisition date.
us-gaap_PaymentsForRepurchaseOfCommonStock
Repurchase of common stock
sybt_CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssetsIncludingCapitalConservationBuffer
Common Equity Tier One Risk Based Capital, Required to Be Well Capitalized to Risk Weighted Assets Including Capital Conservation Buffer
The Common Equity Tier 1 capital ratio required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.
Common Equity Tier 1 risk-based capital, minimum for well capitalized amount
Antidilutive SARs (in shares)
Antidilutive Securities [Axis]
Bank owned life insurance
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Net income per share - basic (in dollars per share)
Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]
Effective Income Tax Rate Reconciliation [Table]
sybt_FederalFundsFromCorrespondingBanksAmountOutstanding
Federal Funds From Corresponding Banks, Amount Outstanding
Represents the amount outstanding from federal funds from corresponding banks.
Intangible
Total future expense
Gross carrying amount
Less sublease income
Goodwill
Goodwill
us-gaap_PaymentsToAcquireFederalHomeLoanBankStock
Purchases of FHLB stock
Proceeds from redemption of FHLB stock
Variable lease cost
Finance Leases Portfolio Segment [Member]
Consumer Portfolio Segment [Member]
Interest Rate Swap Maturing August 6, 2026 [Member]
Represents Interest Rate Swap Maturing August 6, 2026.
Operating lease cost
Commercial Real Estate Portfolio Segment [Member]
sybt_TaxCreditContributionCommitments
Tax Credit Contribution Commitments
Amount of tax credit contribution commitments.
Commercial Portfolio Segment [Member]
Interest Rate Swap Maturing August 6, 2028 [Member]
Represents Interest Rate Swap Maturing August 6, 2028.
us-gaap_LeaseCost
Total lease cost
us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Loans, individually evaluated for impairment
Business Combination [Domain]
Business Combination [Axis]
Disaggregation of Revenue [Table Text Block]
Disaggregation of Revenue [Table]
us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Business Combination, Voting Equity Interest Acquired, Percentage
Doubtful [Member]
Performing Financial Instruments [Member]
Special Mention [Member]
Substandard [Member]
Pass [Member]
Income tax effect
Nonperforming Financial Instruments [Member]
Valuation Approach and Technique [Axis]
Interest expense:
US Treasury Securities and US Government Agencies Debt Securities [Member]
This category includes information about debt securities issued by the United States Department of the Treasury and backed by the United States government and debentures, notes, and other debt securities issued by US government agencies, for example, but not limited to, Government National Mortgage Association (GNMA or Ginnie Mae).
Valuation Approach and Technique [Domain]
Deposits
Retained earnings
Interest expense
us-gaap_InterestExpenseOperating
Total interest expense
Revenue from Contract with Customer [Text Block]
Net change in accrued interest payable and other liabilities
sybt_TransactionDepositsFairValueDisclosure
Transaction deposits
Fair value portion of transaction deposit liabilities held by the entity.
Class of Stock [Axis]
us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm
Federal Home Loan Bank advances
Class of Financing Receivable [Axis]
Securities sold under agreements to repurchase
Class of Financing Receivable [Domain]
Cash Flow Hedging [Member]
sybt_GuaranteeObligationEstimatedPaymentUnderDefaultOnContract
Guarantee Obligation, Estimated Payment Under Default on Contract
Represents the amount that the entity would have been required to pay, if an event of default on all contracts had occurred.
Servicing Asset and Servicing Liability, Risk Mitigation [Table]
Total risk-based capital, actual amount
Off balance sheet commitments to extend credit
Not Designated as Hedging Instrument [Member]
us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
Net interest income after provision expense
us-gaap_InterestExpenseSubordinatedNotesAndDebentures
Subordinated debentures
Long-Lived Asset, Held-for-Sale [Table Text Block]
us-gaap_InterestIncomeFederalFundsSold
Federal funds sold and interest bearing due from banks
Taxable
Tax-exempt
Hedging Relationship [Axis]
Derivative Contract [Domain]
Provision for credit losses
Provision for credit losses
The amount of provision for loan and lease losses and off-balance sheet credit risk exposures.
Cash and due from banks
Commonwealth [Member]
Represents information regarding the entity Commonwealth Bancshares, Inc.
us-gaap_CashCashEquivalentsAndFederalFundsSold
Total cash and cash equivalents
Cash and cash equivalents
Designated as Hedging Instrument [Member]
Loans, including fees
us-gaap_InterestAndFeeIncomeLoansHeldForSaleMortgages
Mortgage loans held for sale
sybt_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansGross
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans, Gross
The amount of loans, before allowance, recognized as of the acquisition date.
Investment securities:
sybt_FinancingReceivableModificationsNumberOfContracts
Financing Receivable, Modifications, Number of Contracts
Number of financing receivables that have been modified by troubled debt restructurings.
sybt_FinancingReceivableTroubledDebtRestructuringSubsequentDefaultNumberOfContracts
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts
Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.
us-gaap_ContractWithCustomerLiability
Contract with Customer, Liability
Three Month Advance Maturing May 2023 [Member]
Represents a three month advance maturing May 2023.
us-gaap_InterestRateDerivativeAssetsAtFairValue
Interest rate swap assets
Asset Class [Domain]
Fair Value by Liability Class [Domain]
us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
Interest rate swap liabilities
Accrued interest receivable
Accrued interest receivable
Dividends payable to stockholders
The value of noncash accrual for dividends payable.
Interest paid
Interest Rate Swap [Member]
us-gaap_CashSurrenderValueOfLifeInsurance
Cash surrender value of life insurance other than BOLI
us-gaap_SecuritiesSoldUnderAgreementsToRepurchase
Securities sold under agreements to repurchase
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
Deposit Liabilities, Type [Table Text Block]
us-gaap_StockholdersEquity
Total stockholders’ equity
Balance
Balance
us-gaap_DebtSecuritiesHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss
us-gaap_FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss
Financing Receivable, Accrued Interest, after Allowance for Credit Loss
Goodwill [Table Text Block]
Schedule of Short-Term Debt [Table Text Block]
Foreign Exchange Forward [Member]
Operating lease right-of-use asset
us-gaap_DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss
Fair value of securities pledged
Non-interest income
us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax
Wealth management and trust services