75000 - Document - Document and Entity Information
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75010 - Statement - Consolidated Balance Sheets
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75020 - Statement - Consolidated Balance Sheets (Parenthetical)
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75030 - Statement - Consolidated Statements of Income
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75040 - Statement - Consolidated Statements of Comprehensive Income (Loss)
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75050 - Statement - Consolidated Statements of Changes to Stockholders' Equity
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75060 - Statement - Consolidated Statements of Changes to Stockholders' Equity (Parenthetical)
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75070 - Statement - Consolidated Statements of Cash Flows
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75080 - Statement - Consolidated Statements of Cash Flows (Parenthetical)
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75090 - Disclosure - Cybersecurity Risk Management, Strategy and Governance
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995455 - Disclosure - Summary of Significant Accounting Policies
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995465 - Disclosure - Business Combination & Asset Purchase
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995475 - Disclosure - Securities
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995485 - Disclosure - Loans
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995495 - Disclosure - Premises and Equipment
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995505 - Disclosure - Leases
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995515 - Disclosure - Servicing
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995525 - Disclosure - Deposits
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995535 - Disclosure - Federal Funds Purchased and Securities Sold Under Agreement to Repurchase
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995545 - Disclosure - Borrowings and Subordinated Notes
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995555 - Disclosure - Income Taxes
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995565 - Disclosure - Employee Benefit Plans
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995575 - Disclosure - Earnings Per Share
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995585 - Disclosure - Related Party Transactions
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995595 - Disclosure - Off Balance Sheet Activities
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995605 - Disclosure - Minimum Regulatory Capital Requirements
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995615 - Disclosure - Restrictions of Dividends & Inter-company Borrowings
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995625 - Disclosure - Derivative Financial Instruments
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995635 - Disclosure - Qualified Affordable Housing Project Investments
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995645 - Disclosure - Fair Value of Financial Instruments
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995655 - Disclosure - Condensed Financial Statements of Parent Company
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995665 - Disclosure - Quarterly Financial Data
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995675 - Disclosure - Segment Reporting
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995685 - Disclosure - Subsequent Events
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995695 - Disclosure - Summary of Significant Accounting Policies (Policies)
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995705 - Disclosure - Summary of Significant Accounting Policies (Tables)
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995715 - Disclosure - Business Combination & Asset Purchase (Tables)
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995725 - Disclosure - Securities (Tables)
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995735 - Disclosure - Loans (Tables)
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995745 - Disclosure - Premises and Equipment (Tables)
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995755 - Disclosure - Leases (Tables)
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995765 - Disclosure - Servicing (Tables)
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995775 - Disclosure - Deposits (Tables)
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995785 - Disclosure - Federal Funds Purchased and Securities Sold Under Agreement to Repurchase (Tables)
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995795 - Disclosure - Borrowings and Subordinated Notes (Tables)
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995805 - Disclosure - Income Taxes (Tables)
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995815 - Disclosure - Employee Benefit Plans (Tables)
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995825 - Disclosure - Earnings Per Share (Tables)
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995835 - Disclosure - Off Balance Sheet Activities (Tables)
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995845 - Disclosure - Minimum Regulatory Capital Requirements (Tables)
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995855 - Disclosure - Derivative Financial Instruments (Tables)
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995865 - Disclosure - Qualified Affordable Housing Project Investments (Tables)
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995875 - Disclosure - Fair Value of Financial Instruments (Tables)
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995885 - Disclosure - Condensed Financial Statements of Parent Company (Tables)
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995895 - Disclosure - Quarterly Financial Data (Tables)
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995905 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail)
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995915 - Disclosure - Summary of Significant Accounting Policies - Components of Other Comprehensive Income and Related Tax Effects (Detail)
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995925 - Disclosure - Business Combination & Asset Purchase - Additional Information (Detail)
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995935 - Disclosure - Business Combination & Asset Purchase - Summary of Changes in Accretable Yield or Income Expected to be Collected (Detail)
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995945 - Disclosure - Business Combination & Asset Purchase - Schedule of Future Amortization of Core Deposit Intangible Assets (Detail)
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995955 - Disclosure - Securities - Amortized Cost and Fair Value of Securities with Gross Unrealized Gains and Losses (Detail)
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995965 - Disclosure - Securities - Gross Unrealized Losses, Aggregated by Investment Category and Length of Time (Detail)
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995975 - Disclosure - Securities - Additional Information (Detail)
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995985 - Disclosure - Securities - Gross Realized Losses (Detail)
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995995 - Disclosure - Securities - Amortized Cost and Fair Value of Debt Securities, by Contractual Maturity (Detail)
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996005 - Disclosure - Loans - Additional Information (Detail)
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996015 - Disclosure - Loans - Loans (Detail)
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996025 - Disclosure - Loans - Contractual Maturity by Portfolio Segment at Amortized Cost Excluding Fair Value Adjustments (Detail)
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996035 - Disclosure - Loans - Distribution of Fixed Rate Loans and Variable Rate Loans by Portfolio Segment (Detail)
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996045 - Disclosure - Loans - Contractual Aging at Amortized Cost in Past Due Loans by Portfolio Segment (Detail)
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996055 - Disclosure - Loans - Amortized Cost of Nonaccrual Loans by Portfolio Segment (Detail)
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996065 - Disclosure - Loans (Tier Risk Rating System) - Additional Information (Detail)
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996075 - Disclosure - Loans - Risk Category of Loans at Amortized Cost by Portfolio Segment Based on Year of Origination (Detail)
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996085 - Disclosure - Loans - Schedule of Collateral-dependent Loans (Detail)
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996095 - Disclosure - Loans - Risk Category of Loans by Portfolio Class (Detail)
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996105 - Disclosure - Loans - Schedule of Impaired Loans (Detail)
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996115 - Disclosure - Loans (Impaired Loans) - Additional Information (Detail)
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996125 - Disclosure - Loans - Summary of Activities in Allowance for Credit Losses (Detail)
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996135 - Disclosure - Loans - Analysis of Allowance for Credit Losses (Detail)
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996145 - Disclosure - Premises and Equipment - Major Categories of Banking Premises and Equipment and Accumulated Depreciation (Detail)
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996155 - Disclosure - Premises and Equipment - Major Categories of Banking Premises and Equipment and Accumulated Depreciation (Parenthetical) (Detail)
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996165 - Disclosure - Premises and Equipment - Additional Information (Detail)
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996175 - Disclosure - Leases - Additional Information (Detail)
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996185 - Disclosure - Leases - Operating Lease Costs and Cash Flows (Detail)
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996195 - Disclosure - Leases - Operating Lease Assets and Liabilities (Detail)
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996205 - Disclosure - Leases - Operating Lease Term and Discount Rates of Lessee Arrangements (Detail)
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996215 - Disclosure - Leases - Summary of Future Lease Payments Based on Maturity for Lessee Liability Arrangements (Detail)
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996225 - Disclosure - Leases - Summary of Future Lease Payments Based on Maturity for Lessee Liability Arrangements (Detail) 2
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996235 - Disclosure - Servicing - Additional Information (Detail)
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996245 - Disclosure - Servicing - Summary of Mortgage Servicing Rights Capitalized and Amortized (Detail)
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996255 - Disclosure - Deposits - Time Deposits (Detail)
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996265 - Disclosure - Deposits - Scheduled Maturities for Time Deposits (Detail)
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996275 - Disclosure - Federal Funds Purchased and Securities Sold Under Agreement to Repurchase - Additional Information (Detail)
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996285 - Disclosure - Federal Funds Purchased and Securities Sold Under Agreement to Repurchase - Daily Securities Sold under Agreement to Repurchase (Detail)
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996295 - Disclosure - Federal Funds Purchased and Securities Sold Under Agreement to Repurchase - Schedule of Remaining Contractual Maturity in Repurchase Agreements and Collateral Pledged (Detail)
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996305 - Disclosure - Borrowings and Subordinated Notes - Additional Information (Detail)
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996315 - Disclosure - Borrowings and Subordinated Notes - Schedule of Maturities of Borrowings Exclusive of Fair Value (Detail)
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996325 - Disclosure - Borrowings and Subordinated Notes - Schedule of Subordinated Notes (Detail)
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996335 - Disclosure - Income Taxes - Components of Income Tax Expense (Detail)
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996345 - Disclosure - Income Taxes - Reconciliation of the Statutory Federal Income Tax Rate to the Effective Tax Rate (Detail)
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996355 - Disclosure - Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail)
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996365 - Disclosure - Income Taxes - Additional Information (Detail)
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996375 - Disclosure - Employee Benefit Plans - Additional Information (Detail)
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996385 - Disclosure - Employee Benefit Plans - Summary of Restricted Shares Issued, Vested and Forfeited (Detail)
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996395 - Disclosure - Employee Benefit Plans - Activity of Restricted Stock Awards (Detail)
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996405 - Disclosure - Earnings Per Share - Additional Information (Detail)
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996415 - Disclosure - Earnings Per Share - Calculation of Basic and Diluted Earnings Per Share (Detail)
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996425 - Disclosure - Related Party Transactions - Additional Information (Detail)
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996435 - Disclosure - Off Balance Sheet Activities - Outstanding Financial Instruments Whose Contract Amounts Represent Credit Risk (Detail)
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996445 - Disclosure - Minimum Regulatory Capital Requirements - Additional Information (Detail)
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996455 - Disclosure - Minimum Regulatory Capital Requirements - Summary of Bank's Actual and Required Capital Amounts and Ratios (Detail)
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996465 - Disclosure - Restrictions of Dividends & Inter-company Borrowings - Additional Information (Detail)
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996475 - Disclosure - Derivative Financial Instruments - Additional Information (Detail)
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996485 - Disclosure - Derivative Financial Instruments - Schedule of Cumulative Basis Adjustments for Interest Rate Swap Derivatives Designated as Fair Value Accounting Hedges (Detail)
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996495 - Disclosure - Derivative Financial Instruments - Summary of Interest Rate Swap Derivatives Designated as Fair Value Accounting Hedges of Fixed-rate Receivables (Detail)
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996505 - Disclosure - Derivative Financial Instruments - Schedule of Notional Amount and Fair Value of Interest Rate Swaps (Detail)
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996515 - Disclosure - Derivative Financial Instruments - Schedule of Effects of Interest Rate Swap Agreements on Consolidated Statements of Income (Detail)
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996525 - Disclosure - Qualified Affordable Housing Project Investments - Additional Information (Detail)
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996535 - Disclosure - Qualified Affordable Housing Project Investments - Schedule of Investments in Qualified Affordable Housing Projects along with the Related Expenses and Tax Credits Recognized (Detail)
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996545 - Disclosure - Fair Value of Financial Instruments - Estimated Fair Values and Related Carrying or Notional Amounts (Detail)
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996555 - Disclosure - Fair Value of Financial Instruments - Financial Assets Measured at Fair Value on Recurring Basis (Detail)
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996565 - Disclosure - Fair Value of Financial Instruments - Changes in the Level 3 Fair Value Category of Unobservable Inputs (Detail)
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996575 - Disclosure - Fair Value of Financial Instruments - Additional Information (Detail)
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996585 - Disclosure - Fair Value of Financial Instruments - Assets Measured at Fair Value on Nonrecurring Basis (Detail)
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996595 - Disclosure - Fair Value of Financial Instruments - Quantitative Information about Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements (Detail)
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996605 - Disclosure - Condensed Financial Statements of Parent Company - Balance Sheets (Detail)
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996615 - Disclosure - Condensed Financial Statements of Parent Company - Statements of Income and Comprehensive Income (Detail)
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996625 - Disclosure - Condensed Financial Statements of Parent Company - Statements of Cash Flows (Detail)
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996635 - Disclosure - Quarterly Financial Data - Summary of Quarterly Financial Data (Detail)
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996645 - Disclosure - Segment Reporting - Additional Information (Detail)
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996655 - Disclosure - Subsequent Events - Additional Information (Detail)
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Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Weighted average fair value per award, Vested
Allowance For Credit Losses [Abstract]
Allowance For Credit Losses [Abstract]
ALLOWANCE FOR CREDIT LOSSES:
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Greater Than 90 Days [Member]
Financing Receivable, Allowance for Credit Loss, Writeoff
Financing Receivable, Allowance for Credit Loss, Writeoff, Total
Charge Offs
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year
2023
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Statement of Financial Position Location, Balance [Domain]
Proceeds from Sale of Federal Home Loan Bank Stock
Proceeds from redemption of FHLB stock
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
Estimated Fair Values and Related Carrying or Notional Amounts
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One
Fair Value, One year or less
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration]
Financing Receivable Portfolio Segment [Axis]
Financing Receivable Portfolio Segment
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer
Fair Value, Twelve Months and Over
Equity [Abstract]
Entity Current Reporting Status
Entity Current Reporting Status
Class of Financing Receivable [Axis]
Class of Financing Receivable
US Government Agencies Debt Securities [Member]
U.S. Government Agencies [Member]
Total
Total
Federal funds purchased and securities sold under agreement to repurchase
Securities sold under agreement to repurchase
Allowance for Loan and Lease Loss, Recovery of Bad Debts
Recoveries
Fair Value, Inputs, Level 2 [Member]
Level 2 [Member]
Commitments and Contingencies Disclosure [Text Block]
Off Balance Sheet Activities
Tabular disclosure of activities disclosure in allowance for credit losses.
Activities In Allowance For Credit Losses Table [Text Block]
Analysis of Allowance for Credit Losses
Interest Income [Member]
Interest and Dividend Income, Operating [Member]
Interest and Dividend Income, Operating.
Common Stock, Shares Authorized
Common stock, shares authorized
Finite-Lived Intangible Asset, Expected Amortization, Year Four
2029
Debt Securities, Available-for-Sale, Measurement Input [Extensible Enumeration]
Unobservable Inputs
Product and Service [Axis]
Product and Service
Major Category Of Receivables Due After One Year Within Five Years [Member]
Major Category Of Receivables Due Within One Year To Five Years[Member]
Major Category Of Receivables Due Within One Year To Five Years [Member]
Fair Value by Liability Class [Domain]
Fair Value by Liability Class
Document Fiscal Period Focus
Document Fiscal Period Focus
Operating lease, right-of-use asset, statement of financial position [Extensible Enumeration]
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
ASU 2023-09 [Member]
Accounting Standards Update 2023-09 [Member]
Entity Shell Company
Entity Shell Company
Dividends, Common Stock, Cash
Cash dividends declared
Share based compensation arrangement by share based payment award number of employee share issued.
Share Based Compensation Arrangement By Share Based Payment Award Number Of Employee Share Issued
Stock issued to number of employees
Restricted shares issued
Fees And Commissions Income [Abstract]
Fees And Commissions Income [Abstract]
Gross charge-offs - Revolving Loans Amortized Cost Basis
Financing Receivable Allowance For Credit Losses Writeoffs Revolving Loans Amortized Cost Basis
Financing receivable allowance for credit losses writeoffs revolving loans amortized cost basis.
Condensed Financial Information Disclosure [Abstract]
Liability measured at fair value on a nonrecurring basis, Total
Servicing Liability
Servicing Liability, Total
Fair Value
Liability measured at fair value on a nonrecurring basis, Total
Cybersecurity Risk Management, Strategy, and Governance [Abstract]
Common Stock, Shares, Issued
Common stock, shares issued
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]
Cybersecurity Risk Board of Directors Oversight [Text Block]
Statement [Table]
Statement [Table]
Interest - available-for-sale securities / interest-bearing time deposits
Interest Income, Debt Securities, Available-for-Sale, Operating
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum
Tier 1 Capital to Risk Weighted Assets For Capital Adequacy Purposes, Ratio
Total Risk-Based Capital to Risk Weighted Assets, Farmers And Merchants State Bank, Actual Amount
Total Risk-Based Capital to Risk Weighted Assets, Farmers And Merchants State Bank, Actual Amount.
Related party ownership amount in concern entity.
Related Party Ownership Amount In Concern Entity
Ownership interest amount
Noninterest-Bearing Deposit Liabilities
Noninterest-bearing
Noninterest-Bearing Deposit Liabilities, Total
Servicing Asset, Valuation Technique [Extensible Enumeration]
Valuation Technique
Financing Receivable Modifications Number Of Contracts
Financing receivable modifications number of contracts.
Number of contracts modified
Number of Contracts Modified in the Last 12 Months
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year
2021
Statement [Line Items]
Statement [Line Items]
Treasury Stock, Value, Acquired, Cost Method
Purchase of treasury stock
Treasury stock repurchased
Treasury stock repurchased
Business Combination [Domain]
Business Acquisition, Acquiree
Securities Sold under Agreements to Repurchase [Member]
Bank owned life insurance.
Bank Owned Life Insurance Policy [Text Block]
Bank Owned Life Insurance
Revenue from Contract with Customer [Policy Text Block]
Revenue Recognition
Banking Regulation, Tier 1 Risk-Based Capital, Actual
Tier 1 Capital to Risk Weighted Assets Actual, Amount
Entity Filer Category
Entity Filer Category
Reclassification, Comparability Adjustment [Policy Text Block]
Reclassification
Financial Asset, 60 to 89 Days Past Due [Member]
60 to 89 Days Past Due [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Liabilities and Equity
Total Liabilities and Stockholders' Equity
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Financing Receivable, Allowance for Credit Loss, Recovery
Recoveries
Funded Commitments Related To The Investments In Qualified Affordable Housing Projects
Funded commitments related to the investments in qualified affordable housing projects.
Funded commitments related to the investments in qualified affordable housing projects
Low-income-housing tax credit investments
Noninterest income
Noninterest Income
Total consolidated noninterest income
Noninterest income activity
Collateral dependent loans categorized as Level 3
Collateral dependent impaired loans categorized as Level 3
Total impaired loans
Recorded Investment
Long-Lived Tangible Asset [Axis]
Long-Lived Tangible Asset
Debt Instrument, Frequency of Periodic Payment
Debt instrument, frequency of periodic payment
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]
Banking Regulation, Tier 1 Leverage Capital, Actual
Tier 1 leverage Capital to Adjusted Total Assets Actual, Amount
Quarterly Financial Information Disclosure [Abstract]
Lessee, Operating Lease, Option to Terminate
Lessee, Operating Lease, Option to Terminate
Share based compensation arrangement by share based payment award number of employees.
Share Based Compensation Arrangement By Share Based Payment Award Number Of Employees
Number of employees, received the stock
Restricted shares vested
Sale of property.
Sale Of Property [Member]
Sale Of Property
Finite-Lived Intangible Assets, Remaining Amortization Period
Remaining economic useful life
Financial Asset, 30 to 59 Days Past Due [Member]
30 to 59 Days Past Due [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Federal income tax at statutory rates
Subsequent Event [Line Items]
Subsequent Event [Line Items]
Loans serviced for others unpaid principal amount.
Loans Serviced For Others Unpaid Principal Amount
Loans serviced for others unpaid principal amount
Pledged Status [Axis]
Cybersecurity Risk Management Third Party Engaged [Flag]
Documents Incorporated by Reference [Text Block]
Documents Incorporated by Reference
Asset Derivatives, Notional Amount
Derivative Asset, Notional Amount
Goodwill
Goodwill
Goodwill, Total
Goodwill, Beginning Balance
Goodwill, Ending Balance
Other Noncash Income (Expense)
Other income (expense)
Other Noncash Income (Expense), Total
Other expense
Effective Income Tax Rate Reconciliation, Percent
Total Income Tax
Agricultural Real Estate Loans [Member]
Agricultural real estate Loans.
Treasury stock.
Treasury Stock Policy [Text Block]
Treasury Stock
Foreclosed real estate
Foreclosed Real Estate Expense
Transfer of loans to other real estate owned
Real Estate Owned, Transfer to Real Estate Owned
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]
Restrictions on Cash and Amounts Due from Banks
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10
Amortized Cost, After ten years
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay
Employee contribution matching percentage
Servicing Asset, Measurement Input [Extensible Enumeration]
Unobservable Inputs
Variable Interest Entity [Table]
Purchases of FHLB stock
Payments to Acquire Federal Home Loan Bank Stock
Purchases of FHLB stock
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Satisfactory Monitored [Member]
Satisfactory Monitored [Member]
4 [Member]
4 [Member]
Allowance for redit losses and unfunded commitment liability, net of tax
Allowance For Credit Losses And Unfunded Commitment Liability Net Of Tax
Allowance for credit losses and unfunded commitment liability net of tax.
Proceeds from Sale of Other Assets, Investing Activities
Proceeds from sale of other assets owned
Interchange income
Interchange Income
Interchange income.
Deposits, Negotiable Order of Withdrawal (NOW)
NOW accounts
Investment, Variable Interest Rate, Type [Extensible Enumeration]
Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net
Net change in federal funds purchased and securities sold under agreements to repurchase
Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net, Total
Significant Accounting Policies [Text Block]
Summary of Significant Accounting Policies
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Nonperforming Financial Instruments [Member]
Nonperforming [Member]
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]
Mortgage-backed Securities [Member]
Securities sold under agreements to repurchase maximum monthly outstanding amount.
Securities Sold Under Agreements To Repurchase Maximum Monthly Outstanding Amount
Maximum Amount Borrowings Outstanding Month End
Deposits, Fair Value Disclosure
Total Deposits
Cybersecurity Risk Management, Strategy, and Governance [Table]
Increase (Decrease) in Other Operating Assets and Liabilities, Net
Change in other assets and other liabilities, net
Other assets and liabilities
Increase (Decrease) in Other Operating Assets and Liabilities, Net, Total
5 [Member]
Special Mention [Member]
Special Mention [Member]
Payment to Acquire Life Insurance Policy, Investing Activities
Purchase of bank owned life insurance
Dividends Payable
Dividend payable
Dividends payable
Investments Classified by Contractual Maturity Date [Table Text Block]
Amortized Cost and Fair Value of Debt Securities, by Contractual Maturity
Basic earnings per share
Basic Earnings Per Share
Basic earnings per share
Earnings per Common Share, Basic
Loss.
Loss [Member]
8 [Member]
Advances from Federal Home Loan Banks fair value related to acquisition.
Advances From Federal Home Loan Banks Fair Value Related To Acquisition
Total borrowings, fair value related to acquisition
Retirement Benefits [Text Block]
Employee Benefit Plans
Salary and Wage, NonOfficer, Excluding Cost of Good and Service Sold
Salaries and wages
Commercial and Industrial [Member]
Commercial & Industrial [Member]
Commercial Portfolio Segment [Member]
Financing Receivable Excluding Fair Vale Adjustment For Interest Swap Hedges
Financing receivable excluding fair vale adjustment for interest swap hedges
Loans after net deferred loan fees and costs
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]
Amortized Cost and Fair Value of Securities with Gross Unrealized Gains and Losses
Payments for (Proceeds from) Loans and Leases
Payments for (Proceeds from) Loans and Leases, Total
Net (increase) decrease on loan originations and principal collections
Variable Interest Entity [Line Items]
Finite-Lived Intangible Assets Acquired
Recognition of core deposit intangible asset with acquired purchase
Dividends may be paid without prior regulatory approval.
Dividends May Be Paid Without Prior Regulatory Approval
Dividends may be paid without prior regulatory approval
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Adjustments to reconcile net income to net cash from operating activities:
Adjustments to reconcile net income to net cash provided by operating activities:
Lessee, Operating Lease, Liability, to be Paid, Year Five
2030
Related Allowance
Specific allocation for collateral dependent impaired loans
Valuation allowance related to impaired loans
Hedging Designation [Domain]
Activity in certificate of deposit.
Activity In Certificate Of Deposit [Abstract]
Activity in certificates of deposit
Federal income taxes paid
Income Tax Paid, Federal, after Refund Received
Income Tax Paid, Federal, after Refund Received, Total
Loan servicing rights
Servicing Asset at Amortized Cost
End of Year
Beginning of Year
Pledging Purpose [Axis]
Schedule of Subordinated Borrowing [Table Text Block]
Schedule of Subordinated Notes
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable Allowance For Credit Losses [Line Items]
Parent Company [Member]
Farmers & Merchants State Bank [Member]
Accounting Standards Update [Axis]
Impaired Financing Receivable, Interest Income, Cash Basis Method
Interest Income Recognized Cash Basis
Interest income recognized on a cash basis on impaired loans
Amortized Cost and Fair Value Debt Securities [Abstract]
Amortized Cost And Fair Value Debt Securities [Abstract]
Equity, Attributable to Parent [Abstract]
Stockholders' Equity
Interest income on nonaccrual loans
Financing Receivable, Nonaccrual, Interest Income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Changes in the Level 3 Fair-Value Category of Unobservable Inputs
Entity Small Business
Entity Small Business
Interest and Dividend Income, Operating [Abstract]
Interest Income
Income
Federal Home Loan Banks [Abstract]
Hedging Designation [Axis]
Other [Member]
Other.
Retained Earnings (Accumulated Deficit)
Retained earnings
Retained Earnings (Accumulated Deficit), Total
Federal Home Loan Bank advances general debt obligations disclosures amount of available unused funds based on current pledging.
Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds Based On Current Pledging
Additional borrowings available from the Federal Home Loan Bank based on current pledging
Property Plant and Equipment Useful Life and Values [Abstract]
Property Plant And Equipment Useful Life And Values [Abstract]
Financing Receivable, Nonaccrual [Table Text Block]
Amortized Cost of Nonaccrual Loans by Portfolio Segment
Fair value of the capitalized servicing rights
Capitalized service right assets fair market value.
Capitalized Service Right Assets Fair Market Value
Nonaccrual [Member]
Nonaccrual.
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Interest payable fair value disclosure.
Interest Payable Fair Value Disclosure
Interest payable
Adams County Financial Resources.
Adams County Financial Resources [Member]
Adams County Financial Resources [Member]
Commercial And Industrial And Industrial Development Bonds [Member]
Commercial And Industrial And Industrial Development Bonds [Member]
Commercial and Industrial [Member]
Number of director received shares.
Number Of Director Received Shares
Number of directors received shares
Awards grants originated in 2019, 2020 and 2021 [Member]
Award grants originated in period three.
Award Grants Originated In Period Three [Member]
Financing Receivable Allowance For Credit Losses Writeoffs Three Years Before Latest Fiscal Year
Financing receivable allowance for credit losses writeoffs three years before latest fiscal year.
Gross charge-offs - fiscal year 2022
Servicing Asset at Amortized Cost, Additions
Capitalized Additions
Leases [Abstract]
Lessee, Lease, Description [Line Items]
Amendment Flag
Amendment Flag
Taxes, Miscellaneous
Franchise taxes
Taxes, Miscellaneous, Total
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax
Net unrealized gain on available-for-sale securities
Product and Service [Domain]
Product and Service
Section 831 deduction
Effective Income Tax Rate Reconciliation, Deduction, Percent
Effective Income Tax Rate Reconciliation, Deduction, Percent, Total
Section 831 deduction
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Federal income tax at statutory rates
Fair value adjustment of derivative
Fair Value Adjustment Of Derivative
Fair value adjustment of derivative.
Summary Of Significant Accounting Policies [Line Items]
Summary Of Significant Accounting Policies [Line Items]
Summary Of Significant Accounting Policies [Line Items]
Earnings Per Share, Policy [Policy Text Block]
Earnings Per Share
Liabilities and Equity [Abstract]
Liabilities and Stockholders' Equity
Interest Expense, Subordinated Notes and Debentures
Subordinated notes
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Tier 1 Capital to Risk Weighted Assets, Farmers And Merchants State Bank, Ratio
Tier 1 Capital to Risk Weighted Assets, Farmers And Merchants State Bank, Ratio.
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash provided by operating activities
Substandard [Member]
Substandard [Member]
6 [Member]
Other Interest Income [Member]
Other [Member]
Interest Income, Other [Member]
Interest Income, Other.
Contractual Aging At Amortized Cost In Past Due Loans By Portfolio Segment Table [Text Block]
Contractual aging at amortized cost in past due loans by portfolio segment.
Contractual Aging at Amortized Cost in Past Due Loans by Portfolio Segment
Common Stock [Member]
Common Stock [Member]
Cybersecurity Risk Role of Management [Text Block]
1-4 Family Real Estate Loans [Member]
One to Four Family Real Estate Loans [Member]
One to four family real estate loans.
Agricultural Loan [Member]
Agricultural Loan [Member]
Agricultural [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount
Employer matching contribution and the discretionary contribution
Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Asset
Concentration of Risk
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]
Summary of Bank's Actual and Required Capital Amounts and Ratios
Lessee, Operating Lease, Liability, to be Paid, Year Three
2028
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Less: Accumulated depreciation
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance
Dividend Income, Operating
Dividends
Dividend Income, Operating, Total
Schedule of Notional Amount and Fair Value of Interest Rate Swaps
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
Debt Securities, Available-for-Sale [Line Items]
Schedule of Available-for-sale Securities [Line Items]
Off balance sheet financial instruments.
Off Balance Sheet Financial Instruments Policy [Text Block]
Off Balance Sheet Instruments
Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block]
Federal Funds Purchased and Securities Sold Under Agreement to Repurchase
Debt Instrument, Interest Rate, Effective Percentage
Fixed-to-floating interest rate
Portion at Fair Value Measurement [Member]
Fair Value Disclosure Item Amounts [Default]
Portion at Fair Value Measurement [Member] [Default]
Entity Address, Address Line One
Entity Address, Address Line One
Deferred Tax Liabilities, Gross
Total deferred tax liabilities
Change in accounting principle, accounting standards update, immaterial effect [true false]
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV
Earnings Per Share [Abstract]
Income Tax, Policy [Policy Text Block]
Income Tax
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]
Consumer Portfolio Segment [Member]
Consumer [Member]
Supplemental Cash Flow Information [Abstract]
Supplemental Information
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase [Line Items]
Carrying Amount of the Hedged Assets
Derivative Asset
Derivative Asset, Total
Banking Regulation, Tier 1 Leverage Capital Ratio, Actual
Tier 1 leverage Capital to Adjusted Total Assets Actual, Ratio
Minimum leverage ratio calculated as ratio of Tier 1 capital to average quarterly assets
Securities sold under agreements to repurchase weighted average interest rate during period.
Securities Sold Under Agreements To Repurchase Weighted Average Interest Rate During Period
Approximate Weighted Average Interest Rate For the Period
Maturity Greater than 90 Days [Member]
Greater Than 90 Days [Member]
Bank Servicing [Member]
Customer Service Fees [Member]
Statement of Financial Position Location, Balance [Axis]
Daily Securities Sold Under Agreement to Repurchase [Member]
Daily securities sold under agreement to repurchase.
Loans.
Loans Policy [Text Block]
Loans
Percentage of likelihood of realization of recognized tax benefit minimum.
Percentage Of Likelihood Of Realization Of Recognized Tax Benefit Minimum
Percentage of likelihood of realization of recognized tax benefit, minimum
Assets Measured at Fair Value on Nonrecurring Basis
Fair Value Measurements, Nonrecurring [Table Text Block]
Operating lease assets
Right-of-use assets
Operating Lease, Right-of-Use Asset
Deferred Tax Assets, Gross
Total deferred tax assets
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]
Repurchase Agreements and Similar Transactions, Maturity Periods [Axis]
Overnight & Continuous [Member]
Securities Borrowed, Fair Value Disclosure
Other securities
Directors And Executive Officers [Member]
Directors And Executive Officers [Member]
Directors and Executive Officers [Member]
Document Type
Document Type
Document Type
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Consumer and credit card loans to accrue interest charged off
Consumer And Credit Card Loans To Accrue Interest Charged Off
Consumer and credit card loans to accrue interest charged off.
Goodwill and Intangible Assets, Policy [Policy Text Block]
Goodwill and Other Intangible Assets
Cash cash equivalents and federal funds sold fair value disclosure.
Cash Cash Equivalents And Federal Funds Sold Fair Value Disclosure
Cash and cash equivalents
Schedule of Cumulative Basis Adjustments for Interest Rate Swap Derivatives Designated as Fair Value Accounting Hedges
Schedule of Cumulative Basis Adjustments for Interest Rate Swap Derivatives Designated as Fair Value Accounting Hedges [Table Text Block]
Schedule of Cumulative Basis Adjustments for Interest Rate Swap Derivatives Designated as Fair Value Accounting Hedges.
Unfunded Loan Commitment And Letters Of Credit [Member]
Unfunded Loan Commitment And Letters Of Credit [Member]
Unfunded Loan Commitment & Letters of Credit [Member]
Commitments to Extend Credit [Member]
Commitments to extend credit [Member]
Entity Central Index Key
Entity Central Index Key
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract]
Banking Regulation, Tier 1 Leverage Capital, Well Capitalized, Minimum
Tier 1 leverage Capital to Adjusted Total Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Amount
Time Deposit Maturities, after Year Five
Thereafter
Investments, Debt and Equity Securities [Abstract]
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]
Prime Rate [Member]
Prime Rate [Member]
Maturities of Time Deposits [Abstract]
Interest-Bearing Deposits in Banks and Other Financial Institutions
Interest-bearing time deposits
Distribution of Fixed Rate Loans and Variable Rate Loans by Portfolio Segment
Distribution Of Fixed Rate Loans And Variable Rate Loans By Portfolio Segment [Table Text Block]
Distribution of fixed rate loans and variable rate loans By portfolio segment.
Re evaluation period for real estate.
Re Evaluation Period For Real Estate
Re-evaluation period for real estate
Percentage of Annual External and Independent Loan
Percentage of annual external and independent loan.
Percentage of annual external and independent loan
Net (Decrease) Increase in Cash and Cash Equivalents
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Subsequent Event Type [Domain]
Subsequent Event Type
Condensed Balance Sheet [Table Text Block]
Schedule of Condensed Balance Sheets
Available For Sale Securities Gross Realized Gain Loss Tax Expenses (Benefit)
Available For Sale Securities Gross Realized Gain Loss Tax Expenses (Benefit)
Tax benefit related to net realized losses
Payment Performance [Member]
Payment Performance [Member]
Payment performance.
Accounting Standards Update [Domain]
Tabular disclosure of fixed rate loans and variable rate loans by major loan category.
Distribution Of Fixed Rate Loans And Variable Rate Loans By Major Loan Category Table [Text Block]
Distribution of Fixed Rate Loans and Variable Rate Loans by Major Loan Category
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Other comprehensive income
Liabilities [Abstract]
Liabilities
Schedule of Securities Financing Transactions [Table Text Block]
Schedule of Remaining Contractual Maturity in Repurchase Agreements and Collateral Pledged
Revision of Previously Issued Financial Statements [Policy Text Block]
Revision of Previously Issued Financial Statements.
Revision of Previously Issued Financial Statements
Financing Receivable, Credit Quality Indicator [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost
Amortized Cost
Securities - available-for-sale
Fair Value
Total, Fair Value
Total Securities Available-for-Sale
Investment Program, Proportional Amortization Method, Elected, Nature of Impairment Loss
Impairment losses related to investments in qualified affordable housing projects
Common Equity Tier 1 Capital to Risk Weighted Assets, Farmers And Merchants State Bank, Ratio
Common Equity Tier 1 Capital to Risk Weighted Assets, Farmers And Merchants State Bank, Ratio
Noninterest Income [Abstract]
Noninterest Income
Unfunded Commitments Related To The Investments In Qualified Affordable Housing Projects
Unfunded commitments related to the investments in qualified affordable housing projects.
Unfunded commitments related to the investments in qualified affordable housing projects
Unfunded commitments related to the investments in qualified affordable housing projects
Unfunded commitments
Unfunded commitments
Document Fin Stmt Error Correction
Document Financial Statement Error Correction [Flag]
Doubtful [Member]
Doubtful [Member]
7 [Member]
Debt Disclosure [Abstract]
Income Taxes [Line Items]
Income Taxes [Line Items]
Income Taxes [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
Purchases
Proceeds from Sale, Loan, Held-for-Sale
Proceeds from sale of loans held for sale
Proceeds from Sale of Loans Held-for-sale, Total
Consulting Fees
Consulting fees.
Consulting fees
Supplemental Cash Flow Elements [Abstract]
Supplemental cash flow information:
Summary of Interest Rate Swap Derivatives Designated as Fair Value Accounting Hedges of Fixed-rate Receivables
Summary of Interest Rate Swap Derivatives Designated as Fair Value Accounting Hedges of Fixed-rate Receivables [Table Text Block]
Summary of Interest Rate Swap Derivatives Designated as Fair Value Accounting Hedges of Fixed-rate Receivables.
Multi-family Real Estate Loans [Member]
Multi family real estate loans.
Estimate of Fair Value Measurement [Member]
Fair Value [Member]
Notional Value
Derivative, Notional Amount
Financial Instrument Performance Status [Domain]
Financial Instrument Performance Status
Current Fiscal Year End Date
Current Fiscal Year End Date
Minimum percentage of eligible compensation on pre tax or post tax basis for eligible employees to save.
Minimum Percentage Of Eligible Compensation On Pre Tax Or Post Tax Basis For Eligible Employees To Save
Minimum percentage of eligible compensation on a pre-tax or post-tax basis for eligible employees to save
Schedule of Long-Term Debt Instruments [Table]
Debt Instrument [Table]
Qualified Affordable Housing Project Investments
Qualified Affordable Housing Project Investments [Policy Text Block]
Qualified Affordable Housing Project Investments
Mortgage loans charged off days past due
Mortgage Loans Charged Off Days Past Due
Mortgage loans charged off days past due.
Capitalized additions to servicing rights
Capitalized Additions to Servicing Rights
Capitalized additions to servicing rights
Cash collateral pledged to counterparties as security for its obligations
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset
Receivables [Abstract]
Advertising Cost [Policy Text Block]
Advertising Expense
Realized Gain (Loss) on Investments [Table Text Block]
Gross Realized Losses
Entity Address, State or Province
Entity Address, State or Province
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Number of Shares, Nonvested, end of period
Number of Shares, Beginning of period
Income from operation before equity in undistributed (distributions in excess of) earnings of subsidiaries
Income from operation before equity in undistributed earnings of subsidiary.
Income From Operation Before Equity In Undistributed Earnings Of Subsidiary
Information Technology and Data Processing
Data processing
Financial Instrument Performance Status [Axis]
Financial Instrument Performance Status
Satisfactory [Member]
Satisfactory [Member]
3 [Member]
Debt Issuance Costs, Gross
Unamortized Note Issuance Costs
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive Income
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Gross Unrealized Gains
Interest bearing time deposits fair value disclosure.
Interest Bearing Time Deposits Fair Value Disclosure
Interest-bearing time deposits
Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-Term
Borrowed funds
Payments to acquire sales of other securities.
Payments To Acquire Sales Of Other Securities
Purchases
Share based compensation director stock awards.
Share Based Compensation Director Stock Awards
Director stock awards
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Equity in undistributed earnings of subsidiaries
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions, Total
Effective Income Tax Rate Reconciliation, Investments Reported Under Proportional Amortization Method, Percentage
Effective income tax rate reconciliation, investments reported under proportional amortization method, percentage.
Investments reported under proportional amortization method
Investments reported under proportional amortization method
Accrued interest receivable
Increase (Decrease) in Accrued Interest Receivable, Net
Maturities
Proceeds from Sale of Held-to-Maturity Securities
Internal Credit Assessment [Axis]
Internal Credit Assessment
Business Combination Certain Loans Acquired In Transfer Changes Accretable Yield Or Income Expected Additions
Business combination certain loans acquired in transfer changes accretable yield or income expected additions.
Additions
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
State income tax, net of federal benefit
Professional Fees
Professional fees
Comprehensive Income, Policy [Policy Text Block]
Other Comprehensive Income (Loss)
Debt Securities, Trading, and Equity Securities, FV-NI [Table]
Schedule Of Trading Securities And Other Trading Assets [Table]
Time Deposit Maturities, Year Five
2030
Pay
Derivative, Average Fixed Interest Rate
Subsequent Event [Member]
Subsequent Event [Member]
Increase in cash surrender value of bank owned life insurance.
Increase In Cash Surrender Value Of Bank Owned Life Insurance
Increase in cash surrender value of bank owned life insurance
Marketable Securities, Policy [Policy Text Block]
Securities
Property, Plant and Equipment [Abstract]
Interest expense
Interest Expense, Operating
Total interest expense
Interest expense
Fair Value Measurement Inputs and Valuation Techniques [Table]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table]
Net Interest Income After Provision for Credit Losses
Interest Income (Expense), after Provision for Loan Loss
Net interest income after provision of loan loss
Payments to acquire available for sale securities debt including adjustment for securities acquired in acquisition.
Payments To Acquire Available For Sale Securities Debt Including Adjustment For Securities Acquired In Acquisition
Purchases
Interest and Dividend Income, Securities, by Security Type [Abstract]
Debt securities:
Debt Securities, Total
Debt Securities
Investments pledged, carrying value
Securities to be used as collateral for the underlying repurchase agreements
Servicing Liability, Valuation Technique [Extensible Enumeration]
Valuation Technique
Liability Derivatives, Notional Amount
Derivative Liability, Notional Amount
Proceeds from Sale of Debt Securities, Available-for-Sale
Sales
Gross charge-offs - Prior
Financing Receivable Allowance For Credit Losses Writeoffs Four Or More Years Before Latest Fiscal Year
Financing receivable allowance for credit losses writeoffs four or more years before latest fiscal year.
Financing Receivables Net of Deferred Income
Financing receivables net of deferred income.
Grand Total
Total Financing Receivables
Share Based Compensation Arrangement by share based payment award number of employee share awarded due to retirement.
Share Based Compensation Arrangement By Share Based Payment Award Number Of Employee Share Awarded Due To Retirement
Restricted shares awarded due to retirement
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Loss [Member]
Investment Program, Proportional Amortization Method, Applied, Amortization Expense
Amortization expense recognized with qualified affordable housing project
Amortization expense
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name
Treasury Stock, shares
Treasury Stock, Common, Shares
Available for sale debt securities amortized cost basis excluding mortgage backed securities.
Available For Sale Debt Securities Amortized Cost Basis Excluding Mortgage Backed Securities
Amortized Cost, Total
Participating Mortgage Loan, Name [Domain]
Participating Mortgage Loan, Name
Business Combination, Consideration Transferred
Purchase of capital stock
Total
Total consideration for acquisition
Lessee, Operating Lease, Option to Extend
Lessee, Operating Lease, Option to Extend
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred:
Selling, General and Administrative Expense
Other general and administrative
Selling, General and Administrative Expense, Total
Debt Instrument, Maturity Date
Maturity date
Prior
Financing Receivable Originated Four or More Years Before Latest Fiscal Year
Financing receivable originated four or more years before latest fiscal year.
Share based compensation arrangement by share based payment award number of employee shares forfeited.
Share Based Compensation Arrangement By Share Based Payment Award Number Of Employee Shares Forfeited
Restricted shares forfeited
Schedule of Investments in Qualified Affordable Housing Projects Along with the Related Expenses and Tax Credits Recognized [Table Text Block]
Schedule of investments in qualified affordable housing projects along with the related expenses and tax credits recognized.
Schedule of Investments in Qualified Affordable Housing Projects along with the Related Expenses and Tax Credits Recognized
Investment, Proportional Amortization Method, Elected, Amount
Qualified affordable housing project investments
Minimum [Member]
Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Weighted average fair value per award, Granted
Financial Instrument [Axis]
Financial Instrument
Tier 1 leverage Capital to Adjusted Total Assets, Farmers And Merchants State Bank, Actual Amount
Tier 1 leverage Capital to Adjusted Total Assets, Farmers And Merchants State Bank, Actual Amount.
Asset Derivatives, Fair Value
Derivative Asset, Subject to Master Netting Arrangement, before Offset
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year
2024
Payments to Fund Long-Term Loans to Related Parties
Subsequent advances
Quarterly Financial Information [Text Block]
Quarterly Financial Data
Amortization of core deposit intangible
Amortization expense
Intangible asset amortization
Fair Value, Inputs, Level 3 [Member]
Level 3 [Member]
Fair Value, Nonrecurring [Member]
Fair Value on Nonrecurring Basis [Member]
Liabilities, Fair Value Disclosure [Abstract]
Financial Liabilities:
Segment Reporting [Abstract]
Deferred Tax Liabilities, Property, Plant and Equipment
Depreciation
Financing Receivable Net Deferred Loan Fees and Costs
Financing receivable net deferred loan fees and costs
Less: Net deferred loan fees and costs
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
Financial Assets Measured at Fair Value on Recurring Basis
Time Deposit Maturities, Year Four
2029
Related Party Transactions [Abstract]
Shares, Outstanding
Beginning balance, shares
Ending balance, shares
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]
Gross Unrealized Losses, Aggregated by Investment Category and Length of Time
Operating Loss Carryforwards
Operating loss carryforwards
Loan Balances
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense
Advances from Federal Home Loan Banks excluding fair value related to acquisition.
Advances From Federal Home Loan Banks Excluding Fair Value Related To Acquisition
Total borrowings excluding for fair value related to acquisition
Total
Commitments and Contingencies
Commitments and Contingencies
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits
Deferred compensation
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Total
Related party receivables:
Related Party Receivables [Abstract]
Related party receivables.
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Weighted average fair value per award, Nonvested, end of period
Weighted average fair value per award, Beginning of period
Pledging of eligible commercial real estate loans
Pledging Of Eligible Commercial Real Estate Loans For Federal Home Loan Bank
Pledging of eligible commercial real estate loans for federal home loan bank.
Present value of operating lease liability arrangements
Operating lease liabilities
Lease liabilities
Operating Lease, Liability, Total
Auditor Firm ID
Auditor Firm ID
Debt Instrument, Basis Spread on Variable Rate
Debt instrument basis points
Common Stock, No Par Value
Common stock, no par value
Financing Receivable, Nonaccrual, Interest Income, Cash Basis Method
Financing receivable, nonaccrual, interest income, cash basis method.
Interest income on nonaccrual loans cash basis
Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, before Tax, Portion Attributable to Parent
Net unrealized gain on available-for-sale securities
Common Equity Tier 1 (CET1) as defined in the regulations.
Cet1
Common Equity Tier 1 Capital to Risk Weighted Assets Actual, Amount
Less: Basis adjustment related to fair value hedges
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)
Lessee, Lease, Description [Table]
Interest and Dividend Income, Operating
Interest income
Total interest income
Borrowings Capacity Under federal Reserve Bank Discount Window
Borrowings capacity under federal reserve bank discount window
Borrowings capacity under federal reserve bank discount window
Prior
Financing Receivable, Originated, More than Five Years before Current Fiscal Year
Interest Income (Expense), Operating
Net Interest Income
Net Interest Income
Net interest income activity
Net Interest Income - Before Provision for Credit Losses
Transfers and Servicing [Abstract]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net income
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total
Past Due
Grand Total
Financing Receivable, before Allowance for Credit Loss
Loans - Gross
Debt Securities, Available-for-Sale, Realized Gain (Loss) [Abstract]
Intangible Asset Amortization
Intangible asset amortization
Intangible asset amortization
Financing Receivable, 90 Days or More Past Due, Still Accruing
Recorded Investment > 90 Days and Accruing
Total loans past-due ninety days or more and still accruing
Real Estate, Policy [Policy Text Block]
Other Real Estate Owned
Long-Term Debt, Type [Domain]
Long-term Debt, Type
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]
Weighted Average Number of Shares Outstanding, Basic
Weighted average common shares outstanding
Average common shares outstanding
Allowance for Loan and Lease Losses, Writeoff
Loans charged off
Charge Offs
Compensation annual basis committee award.
Compensation Annual Basis Committee Award
Compensation annual basis committee award
Long-Term Debt, Maturity Date
Subordinated notes, due date
Segment Reporting, Expense Information Used by CODM, Description
Other Comprehensive Income (Loss), Available-for-Sale Securities, Tax, Portion Attributable to Parent
Other Comprehensive Income (Loss), Available-for-Sale Securities, Tax, Portion Attributable to Parent, Total
Tax expense
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount
Other
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount, Total
2027
Federal Home Loan Bank, Advance, Maturity, Year Two
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Reconciliation of the Statutory Federal Income Tax Rate to the Effective Tax Rate
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
Gross Unrealized Losses, Twelve Months and Over
Long-Lived Tangible Asset [Domain]
Long-Lived Tangible Asset
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]
Provision for (recovery of) credit losses - off balance sheet credit exposures
Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)
Provision for (Recovery of) Credit Losses - Off Balance Sheet Credit Exposures
Two 1-4 Family Real Estate Strata [Member]
Two One to Four Family Real Estate Strata [Member]
Two 1-4 family real estate strata.
Subsequent Events [Text Block]
Subsequent Events
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for Loan Losses
Loans Receivable, Fair Value Disclosure
Loans, net
Interest income expense federal funds sold and purchased.
Interest Income Expense Federal Funds Sold And Purchased
Federal funds sold
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual
Tier 1 Capital to Risk Weighted Assets Actual, Ratio
Related Party Transactions Disclosure [Text Block]
Related Party Transactions
Cash
Assets Cash
Repurchase agreements, US Treasury & agency securities
Amount Outstanding at End
Securities sold under agreements to repurchase
Securities Sold under Agreements to Repurchase, Total
Immediate vesting.
Immediate Vesting [Member]
Immediate Vesting [Member]
Variable Rate [Domain]
Tax exempt interest
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent
Tax exempt interest
Equity, Attributable to Parent
Ending balance
Beginning balance
Total stockholders' equity
Stockholders' Equity
Lessee, Operating Lease, Existence of Option to Extend [true false]
Lessee, Operating Lease, Existence of Option to Extend [true false]
Statement of Stockholders' Equity [Abstract]
Time Deposit Maturities [Table Text Block]
Scheduled Maturities for Time Deposits
Equity Method Investments
Investment in subsidiaries
NOL carryforward expiration year
Net Operating Loss Carryforward Expiration Year
Net operating loss carryforward expiration year.
Interest and operating expenses.
Interest And Operating Expenses
Total expenses
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease), Total
Reserve portion of allowance of credit loss
Dividend income operating from bank subsidiaries.
Dividend Income Operating From Bank Subsidiaries
Dividends from subsidiaries
Use of Estimates, Policy [Policy Text Block]
Use of Estimates
Interest-Bearing Deposit Liabilities [Abstract]
Interest-bearing
Loan servicing rights
Deferred Tax Liabilities Loan Servicing Rights
Deferred tax liabilities loan servicing rights.
Credit Loss, Financial Instrument [Policy Text Block]
Allowance for Credit Losses
Federal Reserve's Bank Term Funding Program [Member]
Federal Reserve's Bank Term Funding Program [Member]
Federal reserve's bank term funding program.
Internal Credit Assessment [Domain]
Internal Credit Assessment
Treasury Stock [Member]
Treasury Stock, Common [Member]
Reclassification & Adjustments
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Reclassification And Adjustments
Fair value measurement with unobservable inputs reconciliation recurring basis asset reclassification and adjustments.
Reclassification and Adjustments
Debt Security, Mortgage-Backed, Available-for-Sale, Fair Value Disclosure
Fair Value, Mortgage-backed securities
Customer Securities for which Entity has Right to Sell or Repledge [Table]
Current expected credit losses
Financing Receivable, Allowance for Credit Loss
Total Allowance for Credit Losses
Less: Allowance for credit losses
Balance at ending of year
Balance at beginning of year
Allowance for credit losses
Condensed Income Statement [Table Text Block]
Schedule of Condensed Income and Comprehensive Income Statements
Fair Value Disclosures [Text Block]
Fair Value of Financial Instruments
Specific allocation on principal balance.
Specific Allocation On Principal Balance [Member]
Specific Allocation on Principal Balance [Member]
Payments to Acquire Held-to-Maturity Securities
Purchases
Transfers and Servicing of Financial Assets [Text Block]
Servicing
Mortgage Servicing Rights [Member]
Mortgage Servicing Rights [Member]
Mortgage Servicing Rights [Member]
Depreciation, Nonproduction
Depreciation
Tier 1 leverage Capital to Adjusted Total Assets, Farmers And Merchants State Bank, Ratio
Tier 1 leverage Capital to Adjusted Total Assets, Farmers And Merchants State Bank, Ratio.
Delinquent period for charging down consumer loans
Delinquent Period For Charging Down Consumer Loans
Delinquent period for charging down consumer loans
Banking Regulation, Tier 1 Risk-Based Capital, Well Capitalized, Minimum
Tier 1 Capital to Risk Weighted Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Amount
Servicing Liability, Measurement Input
Discount rate
Accrued Liabilities and Other Liabilities
Accrued expenses and other liabilities
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Deferred tax liabilities FHLB stock dividends.
Deferred Tax Liabilities Fhlb Stock Dividends
FHLB stock dividends
Federal Funds Purchased and Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure
Fed funds purchased and securities sold under agreement to repurchase
Federal Funds Purchased and Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure, Total
Asset value of peer group banks
Asset Value Of Banks
Asset value of banks.
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Loans and leases receivable excluding fair value adjustments amount.
Loans And Leases Receivable Excluding Fair Value Adjustments Amount
Loans excluding fair value adjustments
Banking Regulation, Total Risk-Based Capital, Well Capitalized, Minimum
Total Risk-Based Capital to Risk Weighted Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Amount
Condensed Financial Information of Parent Company Only Disclosure [Text Block]
Condensed Financial Statements of Parent Company
Cash, Cash Equivalents, and Federal Funds Sold
Total cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Common Equity Tier 1 Capital For Adequacy, Farmers And Merchants State Bank, Amount
Common Equity Tier 1 Capital For Adequacy, Farmers And Merchants State Bank, Amount
Entity [Domain]
Entity
Building [Member]
Building [Member]
Buildings [Member]
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10
Fair Value, After ten years
Credit Facility [Axis]
Credit Facility
Income Tax Expense Benefit Continuing Operations Increase Decrease By Items Reconciliation, Percentage [Abstract]
Income Tax Expense Benefit Continuing Operations Increase Decrease By Items Reconciliation, Percentage.
(Decrease) increase resulting from:
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]
Loan Restructuring Modification [Axis]
Loan Restructuring Modification
Servicing Asset At Amortized Value Additional Disclosures [Abstract]
Servicing Asset At Amortized Value Additional Disclosures [Abstract]
Current State and Local Tax Expense (Benefit)
State
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]
2028
Federal Home Loan Bank, Advance, Maturity, Year Three
Federal Home Loan Bank, Advance, Branch of FHLBank [Table Text Block]
Schedule of Maturities of Borrowings Exclusive of Fair Value
Number of strata which included loan
Number of Strata which Included Loan
Number of strata which included loan.
Loans
Related Party Transaction Loans Approved
Related party transaction loans approved.
Treasury stock - 816,351 shares 12/31/25 and 864,889 shares 12/31/24
Treasury Stock, Value
Treasury Stock, Value, Total
Related and Nonrelated Parties [Axis]
Related Party
Financing Receivable, Year One, Originated, Current Fiscal Year
2025
Collateral Held [Axis]
Collateral Held
Customer Lists [Member]
Customer Lists [Member]
Principal Forgiveness [Member]
Principal Forgiveness [Member]
Cash and Due from Banks
Cash and due from banks
Cash and Due from Banks, Total
Premises and Equipment
Property, Plant and Equipment, Policy [Policy Text Block]
Mortgage backed securities available for sale amortized cost.
Mortgage Backed Securities Available For Sale Amortized Cost
Amortized Cost, Mortgage-backed securities
Regulatory Capital Requirements under Banking Regulations [Text Block]
Minimum Regulatory Capital Requirements
Debt Securities, Available-for-Sale, Measurement Input
Discount rate
Restrictions on Dividends, Loans and Advances [Text Block]
Restrictions of Dividends & Inter-company Borrowings
Amount of time deposit liabilities, including certificates of deposit, in denominations of less than $250,000.
Time Deposits Less Than250000
Time deposits under $250,000
Entity Address, City or Town
Entity Address, City or Town
Stock Repurchased During Period, Shares
Treasury stock repurchased
Issuance of shares, purchase of common stock in acquisition
Major Category Of Receivables Due After Five Years Within Fifteen Years [Member]
Major category of receivables due after five years within fifteen years.
Delinquent loan is well secured and process of collection
Delinquent Loan Is Well Secured And Process Of Collection
Delinquent loan is well secured and process of collection.
Number of Reportable Segments
Ossian financial services incorporated.
Ossian Financial Service Incorporated [Member]
Ossian Financial Services, Inc. [Member]
Ossian [Member]
Security Exchange Name
Security Exchange Name
Credit Facility [Domain]
Credit Facility
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Interest Expense, Deposits
Deposits
Interest Expense, Deposits, Total
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Cash Flows [Extensible Enumeration]
Long-Term Debt, Gross
Principal
Property, Plant and Equipment, Gross
Premises and Equipment (Gross)
Property, Plant and Equipment, Gross, Total
Property, Plant and Equipment, Gross, Beginning Balance
Property, Plant and Equipment, Gross, Ending Balance
Noninterest Expense [Abstract]
Noninterest Expense
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current:
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Well Capitalized, Minimum
Common Equity Tier 1 Capital to Risk Weighted Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Amount
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
Net income before income taxes
Income before income taxes
Net income before income taxes
Deposits, Savings Deposits
Savings
Investment, Proportional Amortization Method, Elected, Statement of Financial Position [Extensible Enumeration]
Loss (gain) on sale of other assets owned
Gain (Loss) on Disposition of Other Assets
Net gain (loss) on sale of other assets owned
Net gain (loss) on sale of other assets owned
Interest Expense, Federal Funds Purchased and Securities Sold under Agreements to Repurchase
Federal funds purchased and securities sold under agreements to repurchase
Interest Expense, Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Total
Pledging Purpose [Domain]
Servicing Asset at Amortized Cost [Line Items]
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Loans:
Andrew J Briggs [Member]
Andrew J Briggs.
Andrew J. Briggs
Interest bearing deposits liability.
Interest Bearing Deposits Liability [Member]
Interest Bearing Deposits [Member]
Deposits [Abstract]
Deposits
Number of directors received shares.
Number Of Directors Received Shares
Number of directors received shares
Current [Member]
Financial Asset, Not Past Due [Member]
Core Deposits [Member]
Core Deposits [Member]
Interest Paid, Excluding Capitalized Interest, Operating Activity
Interest paid
Measurement Basis [Axis]
Measurement Basis
Statistical Measurement [Domain]
Statistical Measurement
Transferred of liabilities in or out of level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net, Total
Maturity Less than 30 Days [Member]
Up To 30 Days [Member]
Share-Based Payment Arrangement, Expense
Compensation expense
Document Period End Date
Document Period End Date
Equity Method Investments and Joint Ventures [Abstract]
Title and Position [Axis]
Title of Individual
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV
Tier 1 Capital to Risk Weighted Assets, Farmers And Merchants State Bank, Actual Amount
Tier 1 Capital to Risk Weighted Assets, Farmers And Merchants State Bank, Actual Amount.
ICFR Auditor Attestation Flag
ICFR Auditor Attestation Flag
Eleven Agricultural Real Estate Strata [Member]
Eleven agricultural real estate strata.
Deferred tax assets net unrealized loss on available for sale securities.
Deferred Tax Assets Net Unrealized Loss On Available For Sale Securities
Net unrealized loss on available-for-sale securities
Accrued interest receivable - available-for-sale securities / interest bearing time deposits
Accrued interest receivable and other assets.
Accrued Interest Receivable And Other Assets
Transfers and Servicing of Financial Assets, Policy [Policy Text Block]
Servicing Assets
Bank of Geneva [Member]
Bank of Geneva.
Bank Of Geneva [Member]
Share based compensation arrangement by share based payment award equity instruments other than options vested excludes shares awarded due to retirement.
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested Excludes Shares Awarded Due To Retirement
Restricted shares vested
Participating Securities, Distributed and Undistributed Earnings (Loss), Basic
Less: distributed earnings allocated to participating securities
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage
Vesting percentage in participant's deferral contributions and employer matching contributions
Statement of Financial Position [Abstract]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Deferred tax assets fair value adjustments.
Deferred Tax Assets Fair Value Adjustments
Fair value adjustments
Line of Credit [Member]
Line of Credit [Member]
Debt Securities, Available-for-Sale, Realized Loss
Gross realized losses
Lessee, Operating Lease, Existence of Option to Terminate [true false]
Lessee, Operating Lease, Existence of Option to Terminate [true false]
Operating Lease Assets and Liabilities
Operating Lease Assets And Liabilities [Table Text Block]
Operating Lease Assets And Liabilities.
Other Comprehensive Income:
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Other Comprehensive Income (Net of Tax):
Income Tax [Table]
Income Tax [Table]
Income Tax [Table]
Additional valuation allowance
Servicing Asset At Amortized Value Additional Valuation Allowance
Servicing asset at amortized value additional valuation allowance.
Class of Stock [Axis]
Class of Stock
Impaired Financing Receivable, Interest Income, Accrual Method
Interest Income Recognized
Interest income recognized on impaired loans
Current Income Tax Expense (Benefit)
Total current
Gain on sales of available-for-sale securities
Gain on sale of available-for-sale securities
Net realized losses
Loss on sales of available-for-sale securities
Net loss on sale of available-for-sale securities
Net gain (loss) on sale of available for sale securities
Awards grants originated in 2020 [Member]
Award Grants Originated In Period One [Member]
Award Grants Originated In Period One [Member]
Financial Service, Other [Member]
Other Service Charges and Fees [Member]
Share based compensation arrangement by share based payment award equity instruments other than options share vested percentage.
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Share Vested Percentage
Shares vest under the plan
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Advance from Federal Home Loan Bank
Federal Home Loan Bank (FHLB) advances
Advance from Federal Home Loan Bank, Total
Interest Income, Securities, US Treasury and Other US Government
U.S. Treasury and government agencies
Interest Income, Securities, US Treasury and Other US Government, Total
Financial Asset, Aging [Domain]
Financial Asset, Aging
Increase (Decrease) in Deposits
Net change in deposits
Increase (Decrease) in Deposits, Total
Liabilities
Total liabilities
Financial Instruments [Domain]
Financial Instruments
Limberlost Bancshares, Inc.
Limberlost Bancshares Inc [Member]
Limberlost Bancshares, Inc. [Member]
Schedule of Fair Value, off-Balance-Sheet Risks [Table Text Block]
Outstanding Financial Instruments Whose Contract Amounts Represent Credit Risk
Common equity tier 1 capital required for capital adequacy to risk weighted assets.
Common Equity Tier1 Capital Required For Capital Adequacy To Risk Weighted Assets
Common Equity Tier 1 Capital to Risk Weighted Assets For Capital Adequacy Purposes, Ratio
Collateral Pledged [Member]
Collateral Pledged [Member]
Collateral Dependent [Member]
Available for sale securities debt maturities fair value excluding mortgage backed securities.
Available For Sale Securities Debt Maturities Fair Value Excluding Mortgage Backed Securities
Fair Value, Total
Affordable Housing Program [Text Block]
Qualified Affordable Housing Project Investments
Awards grants originated in 2018, 2019 and 2020 [Member]
Award grants originated in period two.
Award Grants Originated In Period Two [Member]
1-4 Family Real Estate Loans [Member]
1-4 family real estate loans.
Dividends
Cash dividends declared not paid
Dividends, Total
Lessee, Operating Lease, Liability, to be Paid, Year Two
2027
Financing Receivable Credit Quality Indicators [Table Text Block]
Risk Category of Loans at Amortized Cost by Portfolio Segment Based on Year of Origination
Impaired Loans [Member]
Impaired Loans [Member]
Collateral Dependent Loans [Member]
Advertising Expense
Advertising
Restricted Stock [Member]
Restricted Stock Awards [Member]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment
Impaired loans without a valuation allowance
With no related allowance recorded, Recorded Investment
Common Equity Tier 1 Capital To Risk Weighted Assets Farmers And Merchants State Bank, Amount
Common Equity Tier 1 Capital To Risk Weighted Assets Farmers And Merchants State Bank
Variable Rate [Axis]
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
Gross Unrealized Losses, Less Than Twelve Months
Perpetual federal savings bank.
Perpetual Federal Saving Bank [Member]
Perpetual Federal Savings Bank [Member]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed
Prepayment rate
Entity File Number
Entity File Number
Financing Receivable Allowance For Credit Losses Writeoffs Revolving Loans Converted to Term
Financing receivable allowance for credit losses writeoffs revolving loans converted to term.
Gross charge-offs - Revolving Loans Converted to Term
Payments of Ordinary Dividends, Common Stock
Cash dividends paid on common stock
Payment of dividends
Unrealized gains on securities, net of taxes
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent
Other
US states and political subdivisions tax-exempt debt securities.
U S States And Political Subdivisions Tax Exempt Debt Securities [Member]
State and Local Governments Tax-Exempt [Member]
Issuance of restricted stock (Net of forfeitures)
Stock Issued During Period Value Restricted Stock Net of Forfeitures
Stock issued during period value restricted stock net of forfeitures.
Other Assets
Other assets
Other Assets, Total
Schedule of Effects of Interest Rate Swap Agreements on Consolidated Statements of Income
Derivative Instruments, Gain (Loss) [Table Text Block]
Cover
Cover [Abstract]
Debt and Equity Securities, FV-NI [Line Items]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Financing Receivable, Modified, Subsequent Default
Modifications to borrower experiencing financial difficulty
Effective Income Tax Rate Reconciliation, Deduction, Amount
Section 831 deduction
Effective Income Tax Rate Reconciliation, Deduction, Amount, Total
Financing Receivable Allowance For Credit Losses Writeoffs Fiscal Year Before Current Fiscal Year
Financing receivable allowance for credit losses writeoffs fiscal year before current fiscal year.
Gross charge-offs - fiscal year 2024
Contractual Maturity by Portfolio Segment at Amortized Cost Excluding Fair Value Adjustments
Tabular disclosure of maturity schedule by major category of loans.
Maturity Schedule By Major Category Of Loans Table [Text Block]
Cumulative Effect, Period of Adoption
Cumulative Effect, Period of Adoption [Axis]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Shares forfeited due to employee termination
Restricted shares forfeited
Number of Shares, Forfeited
Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum
Total Risk-Based Capital to Risk Weighted Assets For Capital Adequacy Purposes, Ratio
Minimum ratio of capital to risk-weighted assets
Subordinated Notes
Subordinated Debt [Member]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax
Reclassification adjustment for loss on sale of available-for-sale securities
Reclassification adjustment for realized loss on sale of available-for-sale securities
Financial Asset, Aging [Axis]
Financial Asset, Aging
Effects of derivatives on consolidated statement of income
Gain (loss) recognized on consolidated statements of income
Derivative, Gain (Loss) on Derivative, Net
Derivative, Gain (Loss) on Derivative, Net, Total
Derivative Instruments and Hedging Activities Disclosures [Table]
HALOC [Member]
Home Equity Line of Credit [Member]
Real Estate Acquired Through Foreclosure
Other real estate owned
Foreclosed residential real estate property
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate
Discount yield
US Treasury Securities [Member]
U.S. Treasury [Member]
Sale of Stock [Domain]
Sale of Stock
Segment Reporting
Segment Reporting Disclosure [Text Block]
Accrued interest payable.
Accrued Interest Payable
Accrued interest payable
Tax Jurisdiction of Domicile [Extensible Enumeration]
Number of security transfer.
Number Of Security Transfer
Security transfer from Level 3 to Level 2
Stock Issued During Period, Shares, Acquisitions
Issuance of common stock in acquisition, shares
Issuance of shares of common stock in acquisition
Difference between related party deposit and loan lending amount.
Difference Between Related Party Deposit And Loan Lending Amount
Difference in related borrowings amounts
Standby Letters of Credit [Member]
Standby letters of credit [Member]
Subsequent Event [Table]
Subsequent Event [Table]
Recovery of credit losses - off balance sheet credit exposures
Provision for credit losses-Off balance sheet credit exposures
Provision For Credit Lossesoff Balance Sheet Credit Exposures
Provision for credit losses-off balance sheet credit exposures
Impaired Financing Receivable, with Related Allowance, Recorded Investment
Impaired loans with a valuation allowance
With a specific allowance recorded, Recorded Investment
Deferred Tax Assets, Other
Other
Short-Term Debt, Type [Domain]
Short-term Debt, Type
Finite-Lived Intangible Assets, Net
Total
Finite-Lived Intangible Assets, Net, Beginning Balance
Finite-Lived Intangible Assets, Net, Ending Balance
Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum
Total Risk-Based Capital to Risk Weighted Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Ratio
Major Category Of Receivables After Fifteen Years [Member]
Major Category Of Receivables After Fifteen Years [Member]
Major category of receivables after fifteen years.
Pledged Status [Domain]
Document Financial Statement Restatement Recovery Analysis [Flag]
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Total
Accrued interest receivable on available-for-sale debt securities
Gross charge-offs - Grand Total
Financing Receivable Allowance For Credit Losses Writeoffs Grand Net
Financing receivable allowance for credit losses writeoffs grand net.
Business Combination Certain Loans Acquired In Transfer Changes Accretable Yield Or Income Expected Disposals
Business combination certain loans acquired in transfer changes accretable yield or income expected disposals.
Disposals
Property, Plant and Equipment, Useful Life
Property, plant and equipment, useful life
Short-Term Debt, Type [Axis]
Short-term Debt, Type
New Accounting Pronouncements, Policy [Policy Text Block]
Recent Accounting Pronouncements
Summary of Future Lease Payments Based on Maturity for Lessee Liability Arrangements
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Subordinated Debt
Subordinated notes, net of unamortized issuance costs
Subordinated Debt, Total
Subordinated Debt, Beginning Balance
Subordinated Debt, Ending Balance
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
Summary of Restricted Shares Issued, Vested and Forfeited
Components of Other Comprehensive Income and Related Tax Effects
Comprehensive Income (Loss) [Table Text Block]
Vesting period
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Other Investments and Securities, at Cost
Other securities, at cost
Proceeds from FHLBank Borrowings, Financing Activities
Proceeds of FHLB advances
Allowance for credit losses
Deferred Tax Asset, Tax Deferred Expense, Reserve and Accrual, Financing Receivable, Allowance for Credit Loss
Number of loans
Number of Loans
Number of Loans
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed
Redemption price of principal amount of notes redeemed
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Depreciation
Depreciation Expenses
Depreciation, Total
Depreciation
Reported Value Measurement [Member]
Reported Value Measurement [Member]
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount
Unrecognized compensation cost related to the nonvested portion of restricted stock awards under the plan
Common Stock, Shares, Outstanding
Common stock, shares outstanding
Common Stock, Shares, Outstanding, Beginning Balance
Common Stock, Shares, Outstanding, Ending Balance
Summary Of Significant Accounting Policies [Table]
Summary Of Significant Accounting Policies [Table]
Summary Of Significant Accounting Policies [Table]
Cybersecurity Risk Management Processes Integrated [Flag]
Document Transition Report
Document Transition Report
Deferred Tax Assets, Net
Net Deferred Tax Asset
Operating Expenses
Operating expenses
Operating Expenses, Total
Leases
Lessee, Operating Leases [Text Block]
Payments for Repurchase of Common Stock
Purchase of treasury stock
Components of Income Tax Expense
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Statement of Cash Flows [Abstract]
Current Federal Tax Expense (Benefit)
Federal
Assets, Fair Value Disclosure [Abstract]
Financial Assets:
Loan Servicing Right [Member]
Loan Servicing Rights [Member]
Loan Servicing Rights
Derivative Asset, Statement of Financial Position [Extensible Enumeration]
Interest rate swaps
Interest Rate Swap [Member]
Accounts and Financing Receivables [Table]
Schedule Of Accounts Notes Loans And Financing Receivable [Table]
Earnings Per Share [Text Block]
Earnings Per Share
Commercial and Agricultural [member]
Commercial and Agricultural Loan Portfolio Segment [Member]
Commercial and agricultural loan portfolio segment.
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
Activity of Restricted Stock Awards
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
Ending Balance
Beginning Balance
Deferred Tax Liabilities, Other
Other
Cybersecurity Risk Management Processes Integrated [Text Block]
Net Income
Net Income
Agricultural Real Estate [Member]
Agricultural Real Estate [Member]
Agricultural real estate.
Dividend and accounts receivable from subsidiary.
Dividend And Accounts Receivable From Subsidiary
Dividends and accounts receivable from subsidiary
Operating lease cost
Operating Lease, Cost
Payments & Maturities
Payments & Maturities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases, (Sales), Issuances, (Settlements)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases, (Sales), Issuances, (Settlements), Total
Available-for-Sale Securities, Debt Maturities [Abstract]
Operating cash flows
Operating Lease, Payments
Risk weighted assets capital conservation buffer.
Risk Weighted Assets Capital Conservation Buffer
Capital conservation buffer
Loans [Member]
Assets [Abstract]
Assets
Tier 1 Leverage Capital To Adjusted Total Assets For Capital Adequacy, Farmers And Merchants State Bank, Amount
Tier 1 Leverage Capital To Adjusted Total Assets For Capital Adequacy, Farmers And Merchants State Bank, Amount
Document Fiscal Year Focus
Document Fiscal Year Focus
Payment for Origination and Purchase, Loan, Held-for-Sale
Originations of loans held for sale
Payments for Origination and Purchases of Loans Held-for-sale, Total
Impaired Loans Classified as Modified Loans for Borrowers Experiencing Financial Difficulty and Troubled Debt Restructurings
Financing Receivable, Modified [Table Text Block]
Servicing rights amortization and impairment
Servicing rights amortization - net
Amortization (Accretion) of Mortgage Servicing Rights M S Rs
Amortization (accretion) of mortgage servicing rights MSRs.
Balance at beginning of year
Balance at ending of year
Balance at beginning of year
Financing Receivable Allowance For Expected Credit Losses
Financing receivable allowance for expected credit losses.
Other Assets [Member]
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Cash Flows from Investing Activities
Calculation of Basic and Diluted Earnings Per Share
Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table Text Block]
Retirement Benefits [Abstract]
Interest receivable fair value disclosure.
Interest Receivable Fair Value Disclosure
Interest receivable
Banking Regulation, Tier 1 Leverage Capital Ratio, Well Capitalized, Minimum
Tier 1 leverage Capital to Adjusted Total Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Ratio
Maximum time for reevaluation.
Maximum Time For Reevaluation
Maximum time for re-evaluation (in months)
Weighted Average Number of Shares, Restricted Stock
Less: average unvested restricted shares
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
Securities
Fair Value, off-Balance-Sheet Risk [Table]
Schedule Of Fair Value Off Balance Sheet Risks [Table]
Deferred Federal Income Tax Expense (Benefit)
Federal
Total borrowings, weighted average rate
Total Borrowings, Weighted Average Rate
Total borrowings, weighted average rate.
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture
Stock-based compensation expense
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture, Total
Financing Receivable Allowance For Credi tLosses WriteOffs In Current Fiscal Year
Financing receivable allowance for credi tlosses writeoffs in current fiscal year.
Gross charge-offs - fiscal year 2025
Summary Of Income [Abstract]
Summary Of Income [Abstract]
Summary of Income:
Common equity Tier 1 (CET1) divided by risk weighted assets.
Common Equity Tier1 To Risk Weighted Assets
Common Equity Tier 1 Capital to Risk Weighted Assets Actual, Ratio
Operating loss carryforward at acquisition.
Operating Loss Carryforward at Acquisition
Operating loss carryforward at acquisition
Investments reported under proportional, amortization method
Effective Income Tax Rate Reconciliation, Investments Reported Under Proportional Amortization Method
Effective income tax rate reconciliation, investments reported under proportional amortization method.
Investments reported under proportional amortization method
Finite-Lived Intangible Asset, Expected Amortization, Year One
2026
Components of Deferred Tax Assets [Abstract]
Deferred Tax Assets:
Maturity Overnight [Member]
Overnight & Continuous [Member]
Distributed earnings of dissolved subsidiary
Distributed earnings of dissolved subsidiary
Distributed Earnings Of Dissolved Subsidiary
Distributed earnings of dissolved subsidiary.
Servicing Asset, Measurement Input
Discount rate
Ten Agricultural Real Estate Strata [Member]
Ten Agricultural Real Estate Strata
Fair Value Disclosures [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Lessee, Operating Lease, Liability, to be Paid, Year One
2026
Asset Sold under Agreement to Repurchase [Table]
Schedule Of Assets Sold Under Agreements To Repurchase [Table]
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization Expense
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization Expense, Total
Affordable housing tax credits from other tax benefits
Tax credits recognized
Net Income (Loss) Available to Common Stockholders, Basic
Net earnings available to common shareholders
Long-Term Line of Credit
Line of credit
Long-Term Line of Credit, Total
Business Combination, Pro Forma Information [Table Text Block]
Schedule of Pro-forma Results
Derivative Instrument [Axis]
Lessee, Operating Lease, Liability, to be Paid, after Year Five
2031 and thereafter
Agricultural Real Estate Loans [Member]
Agriculture Real Estate [Member]
Agriculture Real Estate [Member]
Agricultural Real Estate [Member]
Asset Pledged as Collateral without Right [Member]
Pledged as Collateral
Share-Based Payment Arrangement [Abstract]
Deposit Liabilities Disclosures [Text Block]
Deposits
Deferred Tax Liabilities, Intangible Assets
Intangible amortization
Sale of Stock [Axis]
Sale of Stock
Collateral-dependent Loans
Collateral Dependent Loans [Table Text Block]
Collateral dependent loans.
Tier One Capital [Member]
Tier One Capital [Member]
Tier 1 Capital [Member]
Debt Securities, Available-for-Sale, Valuation Technique [Extensible Enumeration]
Valuation Technique
Banking Regulation, Regulatory Capital Requirement, Compliance [Table]
Schedule Of Compliance With Regulatory Capital Requirements Under Banking Regulations [Table]
Proceeds from (Repayments of) Other Debt, Total
Proceeds from (Repayments of) Other Debt
Proceeds (Repayment) of other borrowings
Repayments of other borrowings
Net cash (used in) provided by investing activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Private Placement [Member]
Private Placement
Pass [Member]
Pass [Member]
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic
Less: undistributed earnings allocated to participating securities
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic, Total
Title of 12(b) Security
Title of 12(b) Security
Derivative Financial Instruments
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Condensed Financial Statements, Captions [Line Items]
Condensed Financial Statements, Captions [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Weighted average fair value per award, Forfeited
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five
Amortized Cost, After one year through five years
Related and Nonrelated Parties [Domain]
Related Party
Income Tax Disclosure [Text Block]
Income Taxes
Transfers of financial assets policy.
Transfers Of Financial Assets Policy [Text Block]
Transfers of Financial Assets
Weighted Average Number of Shares Issued, Basic
Weighted average common shares outstanding including participating securities
Deferred tax liabilities accreted discounts on bonds.
Deferred Tax Liabilities Accreted Discounts On Bonds
Accreted discounts on bonds
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]
Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum
Total Risk-Based Capital to Risk Weighted Assets For Capital Adequacy Purposes, Amount
Consolidated Entities [Axis]
Farmers & Merchants State Bank [Member]
Repayment period of loan with reasonable reduction of principal balance.
Repayment Period Of Loan With Reasonable Reduction Of Principal Balance
Repayment period of loan with a reasonable reduction of principal balance
Legal Entity [Axis]
Legal Entity
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five
Fair Value, After one year through five years
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Changes in assets and liabilities:
Property, Plant and Equipment [Table Text Block]
Major Categories of Banking Premises and Equipment and Accumulated Depreciation
Customer Securities for which Entity has Right to Sell or Repledge [Axis]
Net funded low-income-housing tax credit investments
Investment Program, Proportional Amortization Method, Elected, Commitment
Qualified affordable housing project investments
Net funded low-income-housing tax credit investments
Time Deposits
Time
Total
Time Deposit Maturities, Year Three
2028
Income Tax Disclosure [Abstract]
Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum
Tier 1 leverage Capital to Adjusted Total Assets For Capital Adequacy Purposes, Ratio
Fair Value, Recurring and Nonrecurring [Table]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Subordinated Borrowings Disclosure [Text Block]
Borrowings and Subordinated Notes
Proceeds from (Payments for) in Interest-Bearing Deposits in Banks
Change in interest-bearing time deposits
Business Combination [Text Block]
Business Combination & Asset Purchase
Unrecognized Tax Benefits
Unrecognized deferred taxes
Unrecognized Tax Benefits, Beginning Balance
Unrecognized Tax Benefits, Ending Balance
Deferred taxes business combination allocated to additional paid in capital.
Deferred Taxes Business Combination Allocated To Additional Paid In Capital
Deferred taxes business combination allocated to additional paid in capital
Banking Regulation, Total Risk-Based Capital Ratio, Actual
Total Risk-Based Capital to Risk Weighted Assets Actual, Ratio
Measurement Frequency [Domain]
Measurement Frequency
Statement of Income Location, Balance [Axis]
Income Statement Location
Change in accounting principle, accounting standards update, adoption date
Change in Accounting Principle, Accounting Standards Update, Adoption Date
Ossian Financial Services, Inc.
Ossian Financial Services Inc [Member]
Ossian Financial Services, Inc. [Member]
Trading Symbol
Trading Symbol
Property, Plant and Equipment Disclosure [Text Block]
Premises and Equipment
Total Risk-Based Capital to Risk Weighted Assets, Farmers And Merchants State Bank, Ratio
Total Risk-Based Capital to Risk Weighted Assets, Farmers And Merchants State Bank, Ratio.
Related Party Transaction [Table]
Schedule Of Related Party Transactions By Related Party [Table]
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One
Amortized Cost, One year or less
Condensed Financial Statements [Table]
Schedule Of Condensed Financial Statements [Table]
Director [Member]
Board of Directors [Member]
One Director
Customer Securities for which Entity has Right to Sell or Repledge, Securities Type [Domain]
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum
Tier 1 Capital to Risk Weighted Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Ratio
Subsequent Event Type [Axis]
Subsequent Event Type
Proceeds from Collection of Long-Term Loans to Related Parties
Payment received
Mortgage Loans in Process of Foreclosure, Amount
Residential real estate properties foreclosure proceedings
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount
Tax exempt interest
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Cash Flows from Financing Activities
Fair Value, Recurring [Member]
Fair Value on a Recurring Basis [Member]
Total future lease payments
Lessee, Operating Lease, Liability, to be Paid
ASU 2016-13 [Member]
Accounting Standards Update 2016-13 [Member]
Less: Interest
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Financing Receivable Portfolio Segment [Domain]
Financing Receivable Portfolio Segment
Impairment recognized
Goodwill and Intangible Asset Impairment
Goodwill and Intangible Asset Impairment, Total
Equity Components [Axis]
Equity Components
Capital required for capital adequacy to risk weighted assets including capital conservation buffer.
Capital Required For Capital Adequacy To Risk Weighted Assets Including Capital Conservation Buffer
Minimum ratio of capital to risk-weighted assets including capital conservation buffer
Time deposits.
Time Deposits [Member]
Time Deposits [Member]
Defined contribution plan nonelective employer contribution vesting percentage.
Defined Contribution Plan Nonelective Employer Contribution Vesting Percentage
Nonelective employer contribution vesting percentage
Revolving Loans Amortized Cost Basis
Financing Receivable, Revolving
Servicing Liability, Measurement Input [Extensible Enumeration]
Unobservable Inputs
Loans and Leases Receivable, Net of Deferred Income
Ending balance
Loans after net deferred loan fees and costs
Loans after net deferred loan fees and costs
Equity Component [Domain]
Equity Component
Business Combination Certain Loans Acquired In Transfer Changes Accretable Yield Or Income Expected
Business combination certain loans acquired in transfer changes accretable yield or income expected.
Beginning Balance
Ending Balance
Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block]
Summary of Consideration Paid and Amounts of Assets Acquired and Liabilities Assumed Recognized
Other Noncash Investing and Financing Items [Abstract]
Supplemental noncash disclosures:
Document Annual Report
Document Annual Report
Bank Owned Life Insurance
Bank owned life insurance
Business Combination [Axis]
Business Acquisition
Banking Regulation, Tier 1 Risk-Based Capital, Capital Adequacy, Minimum
Tier 1 Capital to Risk Weighted Assets For Capital Adequacy Purposes, Amount
Operating lease, liability, statement of financial position [Extensible Enumeration]
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]
Amortized Cost, After five years through ten years
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures
Issuance of restricted stock (Net of forfeitures), Shares
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total
Derivative, Fair Value, Net
Derivative, Fair Value, Net, Total
Fair Value
Fair Value
Gross charge-offs - Term Total
Financing Receivable Allowance For Credit Losses Writeoffs Term Total
Financing receivable allowance for credit losses writeoffs term total.
Capitalized servicing rights
Capitalized Service Right Assets
Capitalized service right assets.
Loans, net of allowance for credit losses of $27,688 and $25,826
Ending balance: loans acquired with deteriorated credit quality
Performing
Advances, secured by mortgage loans
Loans - Net
U.S. Treasuries and Government Agency Securities [Member]
US Treasury and Government [Member]
US Treasury & Agency Securities [Member]
Statement of Comprehensive Income [Abstract]
Defined contribution plan employer matching contribution description.
Defined Contribution Plan Employer Matching Contribution Description
Defined contribution plan employer matching contribution description
Maximum [Member]
Maximum [Member]
Securities sold under agreements to repurchase weighted average interest rate.
Securities Sold Under Agreements To Repurchase Weighted Average Interest Rate
Weighted Average Rate End of Period
Additional Cash Flow Elements, Investing Activity [Abstract]
Activity in available-for-sale securities:
Activity in available-for-sale securities:
Earnings Per Share [Line Items]
Earnings per share.
Liabilities
Liabilities, Fair Value Disclosure
Designated as Hedging Instrument [Member]
Designated as Hedging Instrument [Member]
Peoples Federal Savings And Loan [Member]
Peoples Federal Savings And Loan [Member]
Peoples Federal Savings and Loan [Member]
Statistical Measurement [Axis]
Statistical Measurement
Net accretion of fair value adjustments
Amortization (accretion) of fair value adjustments.
Amortization Accretion Of Fair Value Adjustments
Time Deposit Maturities, Year One
2026
Excellent And Good [Member]
Excellent And Good [Member]
1-2 [Member]
Common stock - No par value authorized 40,000,000 shares 12/31/25 and 20,000,000 shares 12/31/24; issued 14,564,425 shares 12/31/25 and 12/31/24; outstanding 13,748,074 shares 12/31/25 and 13,699,536 shares 12/31/24
Common Stock, Value, Issued
Share based compensation arrangement by share based payment award number of employee share awarded due to other.
Share Based Compensation Arrangement By Share Based Payment Award Number Of Employee Share Awarded Due To Other
Restricted shares awarded for other
Federal Funds Purchased
Federal funds purchased
Common equity tier 1 capital required to be well capitalized to risk weighted assets.
Common Equity Tier1 Capital Required To Be Well Capitalized To Risk Weighted Assets
Common Equity Tier 1 Capital to Risk Weighted Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Ratio
Financing Receivable, Allowance for Credit Loss [Table]
Schedule Of Financing Receivable Allowance For Credit Losses [Table]
Allowance for Credit Losses Reserve for Collateral Dependent Loans
Allowance for credit losses reserve for collateral dependent Loans
Allowance for credit loss for collateral dependent loans
Consolidation, Policy [Policy Text Block]
Consolidation Policy
Debt Securities, Available-for-Sale, Realized Gain
Gross realized gains
Related Party Transaction, Amounts of Transaction
Granted loans to affiliate companies
Deferred Tax Liabilities, Prepaid Expenses
Prepaids
Bank Owned Life Insurance Income
Gain on bank owned life insurance
Increase in cash surrender value of bank owned life insurance
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]
Gain on derivatives
Gain (Loss) on Sale of Derivatives
Financing Receivable, Held-for-Sale [Policy Text Block]
Loans Held for Sale
Accrued Liabilities
Accrued expenses
Accrued Liabilities, Total
Amortization of customer list intangible.
Amortization Of Customer List Intangible
Amortization of customer list intangible
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent
State income tax, net of federal benefit
Amortization of subordinated notes issuance fees
Amortization of subordinated note issuance costs
Amortization of Debt Issuance Costs
Common equity tier one capital.
Common Equity Tier One Capital [Member]
Common Equity Tier 1 Capital [Member]
Operating Lease Term and Discount Rates of Lessee Arrangements
Lessee Lease Terms and Discount Rate Operating [Table Text Block]
Lessee lease terms and discount rate operating.
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Schedule of Future Amortization of Core Deposit Intangible Assets
Long-Term Debt, Term
Term of debt
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Income or Comprehensive Income [Extensible Enumeration]
Nonaccrual With No Allowance For Credit Loss [Member]
Nonaccrual with no allowance for credit loss.
Time Deposits, at or Above FDIC Insurance Limit
Time deposits of $250,000 or more
Entity Public Float
Entity Public Float
Number of awards granted to one employee on retirement.
Number Of Awards Granted To One Employee On Retirement
Number of shares vested
Restricted shares awarded due to retirement
Servicing Asset at Amortized Cost [Table]
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loan expense
Loan Expense
Loan Expense
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class
Impaired Financing Receivable, Average Recorded Investment
Average Recorded Investment
Average investment in impaired loans
Non interest bearing deposits.
Non Interest Bearing Deposits [Member]
Non Interest Bearing Deposits [Member]
Proceeds from sales of other securities.
Proceeds From Sales Of Other Securities
Sales
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Table]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Business Combination [Table]
Schedule Of Business Acquisitions By Acquisition [Table]
Equity in undistributed earnings of subsidiaries
Equity in undistributed earnings (distributions in excess of earnings).
Equity In Undistributed Earnings Distributions In Excess Of Earnings
Entity Registrant Name
Entity Registrant Name
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax
Gross Unrealized Losses
Transferred of assets in or out of level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net, Total
Entity Voluntary Filers
Entity Voluntary Filers
Finite-Lived Intangible Asset, Expected Amortization, Year Two
2027
Distribution of fixed rate loans by portfolio segment, Fixed Rate
Loans Receivable with Fixed Rates of Interest
Treasury Stock, Shares, Acquired
Purchase of treasury stock, shares
Deferred State and Local Income Tax Expense (Benefit)
State
Allowance for credit losses and unfunded commitment liability
Allowance For Credit Losses And Unfunded Commitment Liability
Allowance for credit losses and unfunded commitment liability.
Subsequent Events [Abstract]
Bank entered Bermudan Putable advance
Bank Entered Bermudan Putable Advance
Bank entered Bermudan Putable advance
Cybersecurity Risk Management Positions or Committees Responsible [Flag]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Tier 1 Capital To Risk Weighted Assets For Capital Adequacy, Farmers And Merchants State Bank, Amount
Tier 1 Capital To Risk Weighted Assets For Capital Adequacy, Farmers And Merchants State Bank, Amount.
Consolidated Entities [Domain]
Consolidated Entities
Finite-Lived Intangible Asset, Expected Amortization, Year Three
2028
Income Tax Benefit
Total Income Tax
Income Taxes
Income taxes
Measurement Frequency [Axis]
Measurement Frequency
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements
Payments & Maturities
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Quantitative Information about Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds
Unsecured borrowings through correspondent banks
Proceeds from Life Insurance Policy
Proceeds from bank owned life insurance
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
US States and Political Subdivisions Debt Securities [Member]
State and Local Governments [Member]
Operating lease, Remaining lease team
Lessee, Operating Lease, Remaining Lease Term
Liability Class [Axis]
Liability Class
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Accumulated other comprehensive loss
Commercial Real Estate Portfolio Segment [Member]
Commercial Real Estate [Member]
Payments of FHLBank Borrowings, Financing Activities
Repayment of FHLB advances
Income Tax Expense Benefit Continuing Operations Increase Decrease By Items Reconciliation [Abstract]
Income Tax Expense Benefit Continuing Operations Increase Decrease By Items Reconciliation [Abstract]
(Decrease) increase resulting from:
Payments to Acquire Property, Plant, and Equipment
Additions to premises and equipment
Payments to Acquire Property, Plant, and Equipment, Total
Expenditures for additions to property and equipment
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Number of Shares, Granted
Nature of operation.
Nature Of Operation Policy [Text Block]
Nature of Operations
Financing Receivable Allowance For Credit Losses Writeoffs Five Years Before Latest Fiscal Year
Financing Receivable Allowance For Credit Losses Writeoffs Five Years Before Latest Fiscal Year.
Gross charge-offs - fiscal year 2021
Total Assets
Segment Assets
Stock issued during period directors stock awards shares.
Stock Issued During Period Directors Stock Awards Shares
Director stock awards, shares
Property, Plant and Equipment [Table]
Schedule Of Property Plant And Equipment [Table]
Income Tax Paid, State and Local, after Refund Received
Income Tax Paid, State and Local, after Refund Received, Total
State income taxes paid
Performing Financial Instruments [Member]
Performing [Member]
Class of Financing Receivable [Domain]
Class of Financing Receivable
Income Statement [Abstract]
Loan servicing income
Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset
Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset, Total
Share-Based Payment Arrangement [Policy Text Block]
Stock-Based Compensation
Fourteen Agricultural Real Estate Strata [Member]
Fourteen Agricultural Real Estate Strata.
Deferred Income Tax Expense (Benefit)
Deferred income taxes
Total deferred
Weighted Average [Member]
Weighted Average
Gain (Loss) on Sales of Loans, Net
Net gain on sale of loans
Gain on sale of loans held for sale
Gain (Loss) on Sales of Loans, Net, Total
Amount of expenses incurred for ATM expenses during the reporting period.
Atm Expense
ATM expense
Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum
Tier 1 leverage Capital to Adjusted Total Assets For Capital Adequacy Purposes, Amount
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Number of shares vested
Number of Shares, Vested
Business Combination [Abstract]
Financing Receivable Allowance For Credit Losses Writeoffs Two Years Before Latest Fiscal Year
Financing receivable allowance for credit losses writeoffs two years before latest fiscal year.
Gross charge-offs - fiscal year 2023
Diluted earnings per share
Diluted Earnings Per Share
Diluted earnings per share
Earnings per Common Share, Diluted
Financing Receivable, Nonaccrual
Investment in nonaccrual loans
Total nonaccrual loans
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Ossian state bank.
Ossian State Banks [Member]
Ossian State Bank [Member]
Title and Position [Domain]
Title of Individual
Fair Value
Assets measured at fair value on a nonrecurring basis, Total
Servicing Asset, Total
Mortgage Servicing Rights net, December 31
Assets measured at fair value on a nonrecurring basis, Total
City Area Code
City Area Code
Other Comprehensive Income (Loss), Net of Tax
Other Comprehensive Income (Loss), Net of Tax, Total
Other comprehensive income
Provision for credit losses - loans
Provision for Credit Losses - Loans
Provision for (recovery of) credit losses - loans
Auditor Name
Auditor Name
Deposits
Total deposits
Quarterly Financial Information [Table Text Block]
Summary of Quarterly Financial Data
Disclosure of accounting policy for other securities.
Other Securities Policy [Text Block]
Other Securities
Past Due [Member]
Financial Asset, Past Due [Member]
Business Combination [Line Items]
Business Acquisition [Line Items]
Business Combination Certain Loans Acquired In Transfer Changes Accretable Yield Or Income Expected Accretion
Business combination certain loans acquired in transfer changes accretable yield or income expected accretion.
Accretion
2026
Federal Home Loan Bank, Advance, Maturity, Year One
Federal Home Loan Bank, Advance, Maturity, Year One, Total
Interest and Fee Income, Loans and Leases
Loans, including fees
Interest and Fee Income, Loans and Leases, Total
Maturity 30 to 90 Days [Member]
30-90 Days [Member]
Period for federal funds sold outstanding.
Period For Federal Funds Sold Outstanding
Period for federal funds sold outstanding
Financing Receivable, Revolving, Converted to Term Loan
Revolving Loans Converted to Term
Servicing Asset at Amortized Cost, Amortization
Amortization
Original maturity period to consider all highly liquid investments purchased as cash equivalents.
Original Maturity Period To Consider All Highly Liquid Investments Purchased As Cash Equivalents
Maturity period of cash equivalents
New loans approved
Related Party Transaction New Loans Approved
Related party transaction new loans approved.
Loan, Held-for-Sale, Fair Value Disclosure
Loans held for sale
Summary of Deferred Tax Liability Not Recognized [Table Text Block]
Components of Deferred Tax Assets and Liabilities
Weighted average remaining lease term (years)
Operating Lease, Weighted Average Remaining Lease Term
Stock Issued During Period, Shares, Restricted Stock Award, Gross
Issuance of shares of restricted stock, Shares
Restricted stock awards, shares issued
Time Deposit Maturities, Year Two
2027
Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed)
Purchase of assets
Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed), Total
Securities sold under agreements to repurchase average outstanding amount in period.
Securities Sold Under Agreements To Repurchase Average Outstanding Amount In Period
Approximate Average Outstanding in Period
Liability Derivatives, Fair Value
Liability Derivatives, Fair Value
Derivative Liability, Subject to Master Netting Arrangement, before Offset
Award Date [Axis]
Award Date
Number of awards granted to one employee for other.
Number Of Awards Granted To One Employee For Other
Restricted shares awarded for other
Schedule of securities sold under agreement to repurchase.
Schedule Of Securities Sold Under Agreement To Repurchase Table [Text Block]
Daily Securities under Agreement to Repurchase
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and Cash Equivalents
Fixed rate
Long-Term Debt, Percentage Bearing Variable Interest, Percentage Rate
Property, Plant and Equipment, Net
Premises and equipment
Premises and Equipment (Net)
Segment property and equipment, net
Distribution of fixed rate loans by portfolio segment, Variable Rate
Loans Receivable with Variable Rates of Interest
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Capital Adequacy, Minimum
Common Equity Tier 1 Capital For Capital Adequacy Purposes, Amount
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Cash and Cash Equivalents - End of Year
Cash and Cash Equivalents - Beginning of Year
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Award Date [Domain]
Award Date
Term Total
Financing Receivable Term Loan
Financing receivable term loan.
Retained Earnings [Member]
Retained Earnings [Member]
Certain loans acquired in transfer accounted for as debt securities accretable yield movement.
Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield Movement Table [Text Block]
Summary of Changes in Accretable Yield or Income Expected to be Collected
Employee Benefits and Share-Based Compensation
Employee benefits
Share-Based Payment Arrangement, Noncash Expense
Stock-based compensation expense
Share-Based Payment Arrangement, Noncash Expense, Total
Federal Funds Sold
Federal funds sold
Outstanding borrowings
Short-Term Debt, Average Outstanding Amount
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months
Fair Value, Less Than Twelve Months
Weighted average discount rate
Operating Lease, Weighted Average Discount Rate, Percent
Fair Value, Inputs, Level 1 [Member]
Level 1 [Member]
Net cash used in financing activities
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Notes Payable
Subordinated notes
Notes Payable, Total
Collateral Held [Domain]
Collateral Held
Payment changes from monthly payment to principal and interest at maturity.
Payment Changes From Monthly Payment To Principal And Interest At Maturity [Member]
Payment Changes from Monthly Payment to Principal and Interest at Maturity [Member]
Weighted Average Remaining Maturity (years)
Derivative, Average Remaining Maturity
Operating Lease Costs and Cash Flows
Lease, Cost [Table Text Block]
Change in accounting principle, accounting standards update, adopted [true false]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year
2022
Auditor Location
Auditor Location
Borrowing capacity under the Federal Reserve's BTFP
Federal Home Loan Bank Borrowings, Fair Value Disclosure
Federal Home Loan Bank advances
Other loan.
Other Loan [Member]
Other Loan [Member]
Cash management advance.
Cash Management Advance [Member]
Cash Management Advance
Interest and operating expenses.
Interest And Operating Expenses [Abstract]
Expenses
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10
Fair Value, After five years through ten years
Transfer of loans to other real estate owned
Loan, Transfer from Held-for-Sale to Held-in-Portfolio
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Sales
Derivative Contract [Domain]
Stock issued during period directors stock awards.
Stock Issued During Period Directors Stock Awards
Director stock awards
Condensed Cash Flow Statement [Table Text Block]
Schedule of Condensed Cash Flow Statement
Debt Securities, Available-for-Sale [Table]
Entity Interactive Data Current
Entity Interactive Data Current
Variable line of credit
Variable Line Of Credit
Variable line of credit.
Statement of Income Location, Balance [Domain]
Income Statement Location
Fair Value Measurement [Domain]
Fair Value Measurement
Finite lived tangible assets acquired.
Finite Lived Tangible Assets Acquired
Recognition of core deposit tangible asset with acquired purchase
Impairment
Servicing Asset at Amortized Cost, Increase (Decrease) for Valuation Allowance Adjustment
Valuation allowance
Valuation Allowance
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Cash Flows from Operating Activities
Furniture and Fixtures [Member]
Furnishings [Member]
Loan Restructuring Modification [Domain]
Loan Restructuring Modification
US states and political subdivisions taxable debt securities.
U S States And Political Subdivisions Taxable Debt Securities [Member]
State and Local Governments Taxable[Member]
Accretion (Amortization) of Discounts and Premiums, Investments
Amortization of premiums on available-for-sale securities, net
Total Risk-Based Capital to Risk Weighted Assets For Capital Adequacy, Farmers And Merchants State Bank, Amount
Total Risk-Based Capital to Risk Weighted Assets For Capital Adequacy, Farmers And Merchants State Bank, Amount.
Cumulative Effect Period of Adoption Adjusted Balance [Member]
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Common stock issued in exchange of each outstanding share
Common stock issued in exchange of each outstanding share
Banking Regulation, Total Capital, Actual
Total Risk-Based Capital to Risk Weighted Assets Actual, Amount
Time deposits.
Time Deposits Table [Text Block]
Time Deposits
Components of Deferred Tax Liabilities [Abstract]
Deferred Tax Liabilities:
Common Stock, Dividends, Per Share, Declared
Cash dividends declared, per share
Dividends Declared
Cumulative Effect, Period of Adoption
Cumulative Effect, Period of Adoption [Domain]
Entity Tax Identification Number
Entity Tax Identification Number
Repurchase Agreements and Similar Transactions, Maturity Periods [Domain]
Equipment Expense
Furniture and equipment
Loans, Including Fees [Member]
Interest And Fee Income Loans And Leases [Member]
Interest And Fee Income Loans And Leases.
Land [Member]
Land [Member]
Long-Term Debt, Type [Axis]
Long-term Debt, Type
Debt Instrument, Term
Term of loan
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale
Maturities, prepayments and calls
Occupancy, Net
Net occupancy expense
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Loans
Change in Fair Value
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
Interest Income, Other
Other
Local Phone Number
Local Phone Number
Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance
Loans held for sale
Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance, Beginning Balance
Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance, Ending Balance
Participating Mortgage Loans [Axis]
Participating Mortgage Loans
Auditor Opinion [Text Block]
Perpetual federal savings bank.
Perpetual Federal Savings Bank [Member]
Perpetual Federal Savings Bank {Member]
Servicing Asset at Amortized Cost [Table Text Block]
Summary of Mortgage Servicing Rights Capitalized and Amortized
Awards grants originated in 2020, 2021 and 2022 [Member]
Award grants originated in period four.
Award Grants Originated In Period Four [Member]
Major Category Of Receivables Due Within One Year [Member]
Major Category Of Receivables Due Within One Year [Member]
Major Category Of Receivables Due Within One Year [Member]
Federal Deposit Insurance Corporation Premium Expense
FDIC assessment
Noninterest Expense
Total noninterest expense
Noninterest expenses
Noninterest expense activity
Financing Receivable, Credit Quality Indicator [Table]
Accounting Policies [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax
Noninterest income
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited
Issuance of shares of restricted stock, forfeitures
Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]
Schedule Of Earnings Per Share Basic By Common Class [Table]
Broker-Dealer [Abstract]
Residential Portfolio Segment [Member]
Consumer Real Estate [Member]
Other Real Estate Owned-Residential [Member]
Activity in other securities at cost.
Activity In Other Securities At Cost [Abstract]
Activity in other securities, at cost:
Lessee, Operating Lease, Liability, to be Paid, Year Four
2029
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Cash Flows [Extensible Enumeration]
Class of Stock [Domain]
Class of Stock
Collateral dependent loans
Financial Collateral Dependent Loans
Financial collateral dependent loans.
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Unrecognized compensation cost related to the nonvested portion of restricted stock awards under the plan, period for recognition
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent
Percentage of total eligible compensation, contribution by Bank, maximum limit
Derivative Financial Instruments
Derivatives, Reporting of Derivative Activity [Policy Text Block]
Entity Emerging Growth Company
Entity Emerging Growth Company
Interest Income, Securities, State and Municipal
Municipalities
Interest - municipals / interest-bearing time deposits
Federal Home Loan Bank Advances [Member]
President And Senior Management Team [Member]
President and senior management team.