Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Loans held for sale Financing Receivable, Held-for-Sale Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Short-Term Debt, Type [Axis] Short-Term Debt, Type [Axis] Title of 12(b) Security Title of 12(b) Security Carrying Amount Reported Value Measurement [Member] Equity Investments Equity Method Investments [Member] Debt Securities, Available-for-Sale [Table] Debt Securities, Available-for-Sale [Table] Valuation allowance, beginning of period Valuation allowance, end of period Valuation Allowance for Impairment of Recognized Servicing Assets, Balance Increase in mortgage servicing rights resulting from transfers of financial assets Increase in mortgage servicing rights resulting from transfers of financial assets Servicing Asset at Amortized Cost, Other Changes that Affect Balance, Amount Schedule of Assets Measured on Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Adjustment to Compensation, Amount Adjustment to Compensation Amount Total capital (to risk weighted assets), Actual, Ratio Banking Regulation, Total Risk-Based Capital Ratio, Actual Financial Instrument [Axis] Financial Instrument [Axis] Segment Reporting [Abstract] Schedule of Assets Measured on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Liabilities Employee-related Liabilities Fair value of mortgage servicing rights; end of period Mortgage servicing rights Servicing Asset at Fair Value, Amount Measurement Frequency [Axis] Measurement Frequency [Axis] Consolidated Entities [Axis] Consolidated Entities [Axis] Gain on termination of lease Gain (Loss) on Termination of Lease Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Number of unsecured federal funds Number Of Unsecured Federal Funds Number Of Unsecured Federal Funds Phantom Stock Awards, Performance-based Awards Phantom Stock Awards, Performance Based Awards [Member] Phantom Stock Awards, Performance Based Awards Student loan asset-backed securities Student loan asset-backed securities Asset-Backed Securities [Member] Total capital (to risk weighted assets), For Capital Adequacy Purposes, Ratio Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum DEPOSITS Deposit Liabilities Disclosures [Text Block] Leases [Abstract] Leases [Abstract] Additions Valuation Allowance for Impairment of Recognized Servicing Assets, Additions for Expenses Total loans receivable Total Loans Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process Schedule of Bank’s Tier 1 (Leverage) and Risk-Based Capital Ratios Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Tier 1 capital (to risk weighted assets), Actual, Amount Banking Regulation, Tier 1 Risk-Based Capital, Actual Consolidated Entities [Domain] Consolidated Entities [Domain] Schedule of Held to Maturity Securities Debt Securities, Held-to-Maturity [Table Text Block] Current period gross charge-offs, Prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff Total Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Options granted (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Fair Value Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year Common stock, par value (USD per share) Common Stock, Par or Stated Value Per Share Intangible assets Intangible Asset, Excluding Goodwill, after Accumulated Amortization Unvested and outstanding at beginning of year (shares) Unvested and outstanding at end of period (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Schedule of Loan Modifications Financing Receivable, Modified [Table Text Block] Net accretion on debt securities Accretion (Amortization) of Discounts and Premiums, Investments Schedule of Federal Home Loan Bank Advances Federal Home Loan Bank, Advance, Branch of FHLBank [Table Text Block] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Schedule of Collateral Dependent Loans by Portfolio Segment Schedule of Amortized Cost Basis Of Collateral Dependent Loans [Table Text Block] Schedule of Amortized Cost Basis Of Collateral Dependent Loans Number of reportable segments Number of Reportable Segments Mortgage servicing rights, beginning of period Mortgage servicing rights, end of period Servicing Asset at Amortized Cost Other borrowings Other Borrowings, Fair Value Disclosure Other Borrowings, Fair Value Disclosure Liquidating investment period (in years) Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period Short-Term Debt, Type [Domain] Short-Term Debt, Type [Domain] Proceeds from sales of foreclosed and repossessed assets Proceeds From Sale Of Foreclosed Properties Proceeds from sale of foreclosed properties. The components of total lease cost were as follows: Lease, Cost [Abstract] Entity Address, City or Town Entity Address, City or Town Granted (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Money market accounts Deposits, Money Market Deposits Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Receivables [Abstract] Receivables [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] December 31, 2028 Time Deposit Maturities, Year Two Current period gross charge-offs, Year one Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Equity investment capital distribution Proceeds from Equity Method Investment, Distribution, Return of Capital FHLB advances Federal Home Loan Bank Borrowings, Fair Value Disclosure Significant Other Observable Inputs (Level 2) (Level II) Fair Value, Inputs, Level 2 [Member] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] 2028 Lessor, Operating Lease, Payment to be Received, Year Three Greater Than 89 Days Past Due Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Other expenses Other Expenses Citizens Community Bancorp, Inc. Parent Company [Member] Total securities with contractual maturities Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Fair Value Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Loans Loans and Finance Receivables [Member] Savings accounts Deposits, Savings Deposits Schedule of Segment Reporting Segment Reporting [Table Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Gain on sale of loans Gain (Loss) on Sale of Mortgage Loans Banking Regulation, Regulatory Capital Requirement, Compliance [Table] Banking Regulation, Regulatory Capital Requirement, Compliance [Table] Current year-to-date other comprehensive income Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Unfunded commitments Less: Allowance for credit losses Beginning of period End of period Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest Schedule of Maturities of Operating Lease Liabilities Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Document Period End Date Document Period End Date Debt instrument, face amount Debt Instrument, Face Amount Basic Earnings Per Share, Basic [Abstract] 2028 Lessee, Operating Lease, Liability, to be Paid, Year Two Revolving to Term Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan Bank Branch Offices Bank Branch Offices [Member] Bank Branch Offices Debt instrument, term (in years) Debt Instrument, Term LEASES Lessor, Operating Leases [Text Block] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Other comprehensive income Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] % of Total Class of Financing Receivables Financing Receivable, Excluding Accrued Interest, Modified in Period, to Total Financing Receivables, Percentage Furniture Fixtures and Equipment Furniture Fixtures And Equipment [Member] Furniture fixtures and equipment. Other Investments Other Investments, Policy [Policy Text Block] Other Investments, Policy [Policy Text Block] Subordinated Notes due 2032 Subordinated Notes, 4.75% Due March 2032, Variable Rate Commencing April 2027 [Member] Subordinated Notes, 4.75% Due March 2032, Variable Rate Commencing April 2027 Due after five years through ten years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Amortized Cost EARNINGS PER SHARE Earnings Per Share [Text Block] 2018 Equity Incentive Plan Two Thousand And Eighteen Equity Incentive Plan [Member] Two Thousand and Eighteen Equity Incentive Plan [Member] Per share information: Earnings Per Share [Abstract] Earnings Per Share [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total liabilities Liabilities Trading Symbol Trading Symbol Recoveries Valuation Allowance for Impairment of Recognized Servicing Assets, Deductions for Recoveries Discounted rates Measurement Input, Discount Rate [Member] Due after one year through five years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Rolling after One through Five Years Available-for-sale ("AFS") securities, at fair value (amortized cost of $145,282, net of allowance for credit losses of $0 at June 30, 2026 and amortized cost of $151,618, net of allowance for credit losses of $0 at December 31, 2025) Estimated Fair Value Total available-for-sale securities Debt Securities, Available-for-Sale, Excluding Accrued Interest Allowance for Credit Losses - Loans: Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] Net capital expenditures Payments to Acquire Property, Plant, and Equipment Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Company Selected Measure Name Company Selected Measure Name Purchase of available-for-sale securities Payments to Acquire Debt Securities, Available-for-Sale Operating Lease, Lease Income, Statement of Income or Comprehensive Income Flag Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Interest on deposits Interest Expense, Deposits Diluted Earnings Per Share, Diluted [Abstract] Term of equity incentive plan (in years) Share-based Compensation Arrangement By Share-based Payment Award, Term Of Plan Share-based Compensation Arrangement By Share-based Payment Award, Term Of Plan Year one Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Subordinated Notes due 2032 Subordinated Notes, 6.00% Due August 2032, Variable Rate Commencing September 2025 [Member] Subordinated Notes, 6.00% Due August 2032, Variable Rate Commencing September 2025 Credit Facility [Domain] Credit Facility [Domain] Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Unsecured Federal Funds Purchased Unsecured Federal Funds Purchased [Member] Unsecured Federal Funds Purchased [Member] Cash dividends paid (USD per share) Common Stock, Dividends, Per Share, Cash Paid Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Useful life of property and equipment (in years) Property, Plant, and Equipment, Useful Life Tier 1 leverage ratio (to adjusted total assets), Actual, Amount Banking Regulation, Tier 1 Leverage Capital, Actual Financing Receivable, Modified [Line Items] Financing Receivable, Modified [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Outstanding commitment amount to borrowers Financing Receivable, Modified, Commitment to Lend Mortgage-backed securities Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost Operating cash flows from operating leases Operating Lease, Payments Award Timing Predetermined Award Timing Predetermined [Flag] Intrinsic value of options exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Agricultural real estate Agricultural Real Estate [Member] Agricultural Real Estate [Member] Interest and dividend income: Interest and Dividend Income, Operating [Abstract] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Stock based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Quoted Prices in Active Markets for Identical Instruments (Level 1) (Level I) Fair Value, Inputs, Level 1 [Member] Proceeds from principal payments and maturities of held-to-maturity securities Proceeds from Sale and Maturity of Held-to-Maturity Securities Due after ten years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Available-for-sale securities Debt Securities, Available-for-Sale [Abstract] Common stock repurchased Stock Repurchased and Retired During Period, Value Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Mortgage servicing rights, net Mortgage servicing rights, net Servicing Asset At Amortized Cost, Net Of Valuation Allowance Servicing Asset At Amortized Cost, Net Of Valuation Allowance Depreciation expense Depreciation Depreciation Plan Name [Domain] Plan Name [Domain] Scenario [Domain] Scenario [Domain] Total securities with contractual maturities Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost Outstanding at beginning of period (USD per share) Outstanding at end of period (USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Operating lease renewal term (in years) Lessee, Operating Lease, Renewal Term Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] INVESTMENT SECURITIES Investment in Debt and Equity Securities and Other Trading Assets [Text Block] Long-term line of credit Long-Term Line of Credit Receipts Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity [Abstract] Cash dividends paid Payments of Ordinary Dividends, Common Stock Allowance for credit losses Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Noncurrent Expiration Date Trading Arrangement Expiration Date Current period gross charge-offs, Total Financing Receivable, Excluding Accrued Interest, Before Allowance For Credit Loss, Writeoff Financing Receivable, Excluding Accrued Interest, Before Allowance For Credit Loss, Writeoff Gross Unrecognized Gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Subordinated Notes Subordinated Debt [Member] Option Share, Exercisable at end of period (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Interest bearing demand deposits Interest-Bearing Deposit Liabilities Deposits (excluding demand deposits) Deposits, Fair Value Disclosure Commercial real estate Commercial Real Estate [Member] Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] 2026 Lessor, Operating Lease, Payment to be Received, Year One Segments [Domain] Segments [Domain] Federal Reserve Bank Federal Reserve Bank Stock [Member] Federal reserve bank. Office Properties and Equipment Property, Plant, and Equipment [Policy Text Block] Scenario [Axis] Scenario [Axis] Surrender of restricted shares of common stock to satisfy the withholding taxes due upon vesting (shares) Shares Issued, Shares, Share-Based Payment Arrangement, Forfeited PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Estimated Fair Value Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Other consumer Other consumer Consumer Loan [Member] Purchase of equity investments Payments to Acquire Equity Method Investments Stated interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Cash dividends Dividends, Common Stock, Cash Total stockholders’ equity Balance at beginning of period Balance at end of period Equity, Attributable to Parent Unrealized Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract] [Abstract] Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract] [Abstract] Total capital (to risk weighted assets), For Capital Adequacy Purposes, Amount Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum Securities or Other Assets Sold under Agreements to Repurchase [Axis] Securities or Other Assets Sold under Agreements to Repurchase [Axis] Number of properties subject to operating leases Number Of Properties Subject To Operating Lease Number Of Properties Subject To Operating Lease Assets Assets [Abstract] Payment Deferral Payment Deferral [Member] Other investments Other Investments Schedule of Financing Receivable Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Fair Value, Measurements, Nonrecurring Fair Value, Nonrecurring [Member] Professional services Professional Fees Insider Trading Policies and Procedures [Line Items] Cash paid during the period for: Cash Paid During Year for [Abstract] Cash paid during the year. Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Servicing asset, measurement input Servicing Asset, Measurement Input The components of total lease income were as follows: Operating Lease, Lease Income [Abstract] Number of operating segments Number of Operating Segments Entity Central Index Key Entity Central Index Key Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Additional paid-in capital Additional Paid in Capital, Common Stock Equity [Abstract] Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Segment net interest income and non-interest income Segment Net Interest Income And Non-interest Income Segment Net Interest Income And Non-interest Income ATM Location ATM Location [Member] ATM Location Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Financing Receivable, Modified [Table] Financing Receivable, Modified [Table] Option Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Basis spread on variable rate (as a percent) Debt Instrument, Basis Spread on Variable Rate Variable Rate [Domain] Variable Rate [Domain] Nonaccrual with no Allowance for Credit Losses Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance Restricted Stock Restricted Stock [Member] Originations of loans held for sale Payment for Origination and Purchase, Loan, Held-for-Sale Accumulated Other Comprehensive Income (loss) Other Accumulated Comprehensive Income (Loss), net of tax AOCI Attributable to Parent [Member] Total capital (to risk weighted assets), To Be Well Capitalized, Ratio Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum All Individuals All Individuals [Member] Due in one year or less Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Available-for-sale security, restricted Debt Securities, Available-for-Sale, Restricted Loss Contingencies Commitments and Contingencies, Policy [Policy Text Block] Supplemental balance sheet information related to leases was as follows: Balance Sheet Related Disclosures [Abstract] Common equity tier 1 (to risk weighted assets), For Capital Adequacy Purposes, Amount Common Equity Tier One Risk Based Capital Required For Capital Adequacy Common Equity Tier One Risk Based Capital Required For Capital Adequacy Statement [Line Items] Statement [Line Items] TOTAL ASSETS Total consolidated assets Assets Federal home loan bank advances Federal Home Loan Bank, Advances, Year Three Federal Home Loan Bank, Advances, Year Three Payments Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Extended Maturity Extended Maturity [Member] Accrued interest receivable on available-for-sale and held-to-maturity securities Debt Securities, Held-to-Maturity, Accrued Interest, before Allowance for Credit Loss Total interest expense Interest expense Interest Expense, Operating Net gains on equity securities Equity Securities, FV-NI, Realized Gain (Loss) Financing Receivable, by Credit Quality Indicator [Domain] Internal Credit Assessment [Domain] Assets Sold under Agreements to Repurchase [Line Items] Assets Sold under Agreements to Repurchase [Line Items] Operating Segments Operating Segments [Member] Provision for valuation allowance on foreclosed properties Provision For Valuation Allowance On Foreclosed Properties Provision For Valuation Allowance On Foreclosed Properties Net sales of other investments Payments For (Proceeds From) Non-Marketable Equity Securities Payments For (Proceeds From) Non-Marketable Equity Securities Asset Sold under Agreement to Repurchase [Table] Asset Sold under Agreement to Repurchase [Table] Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax STOCK-BASED AND OTHER COMPENSATION Share-Based Payment Arrangement [Text Block] Mortgage-backed securities Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value Occupancy Occupancy, Net PEO PEO [Member] Non-interest bearing demand deposits Noninterest-Bearing Deposit Liabilities Federal reserve borrowings outstanding Line of Credit Facility, Maximum Amount Outstanding During Period % of Total Financing Receivable, before Allowance for Credit Loss, to Total, Percent Goodwill Goodwill Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Net gains on equity securities Equity Securities, FV-NI, Gain (Loss) Retained Earnings Retained Earnings [Member] Money Market Funds Money Market Funds [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock outstanding (shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Thereafter Lessee, Operating Lease, Liability, To Be Paid, After Year Three Lessee, Operating Lease, Liability, To Be Paid, After Year Three Schedule of Carrying Amount and Estimated Fair Value of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Corporate debt securities Corporate Debt Securities [Member] Diluted earnings (USD per share) Diluted earnings per share (USD per share) Earnings Per Share, Diluted Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] FDIC premium assessment Federal Deposit Insurance Corporation Premium Expense Provision for credit losses Financing Receivable, Credit Loss, Expense (Reversal) Thereafter Lessor, Operating Lease, Payment To Be Received, After Year Three Lessor, Operating Lease, Payment To Be Received, After Year Three Amortization of intangible assets Amortization of intangible assets Amortization Intangible Asset, Finite-Lived, Amortization Expense Intangible Asset, Finite-Lived [Line Items] Intangible Asset, Finite-Lived [Line Items] Year four Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year Common Stock Repurchased Common Stock Repurchased [Policy Text Block] Common Stock Repurchased Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Total consolidated revenues Revenue from Contract with Customer, Excluding Assessed Tax Tier 1 leverage ratio (to adjusted total assets), For Capital Adequacy Purposes, Ratio Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum Net gain from disposals of foreclosed and repossessed assets Net Gain On Disposal Of Foreclosed Properties Net gain on disposal of foreclosed properties. 2008 Equity Incentive Plan Two Thousand And Eight Equity Incentive Plan [Member] 2008 Equity Incentive Plan [Member] Financial assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Senior Notes due 2039 Senior Notes, Variable Rate due in June 2039 [Member] Senior Notes, Variable Rate due in June 2039 Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Non-option instruments granted (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted Schedule of Deposits by Type Deposit Liabilities, Type [Table Text Block] Mortgage-backed securities Mortgage-backed securities Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] Due after one year through five years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost Due after one year through five years Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value Other Assets Collateral Held, Other Assets [Member] Collateral Held, Other Assets Common equity tier 1 (to risk weighted assets), Actual, Ratio Common Equity Tier One Based Capital To Risk Weighted Assets Common Equity Tier One Based Capital To Risk Weighted Assets Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes, Ratio Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum December 31, 2026 Time Deposit Maturities, Remainder of Fiscal Year Cash paid for amounts included in the measurement of lease liabilities: Cash Paid for Amounts Included in the Measurement of Lease Liabilities [Abstract] Cash Paid for Amounts Included in the Measurement of Lease Liabilities Collateral Held [Axis] Collateral Held [Axis] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Revolving Financing Receivable, Excluding Accrued Interest, Revolving Operating Lease, Right-of-Use Asset, Statement of Financial Position Flag Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Schedule of Allowance for Credit Losses Financing Receivable, Allowance for Credit Loss [Table Text Block] Common stock issued (shares) Balance at beginning of period (shares) Balance at end of period (shares) Common Stock, Shares, Issued Surrender of restricted shares of common stock to satisfy the withholding taxes due upon vesting Shares Granted, Value, Share-Based Payment Arrangement, Forfeited Available-for-sale securities, allowance for credit loss Debt Securities, Available-for-Sale, Allowance for Credit Loss C&I/Agricultural operating C&I/Agricultural Operating Portfolio Segment [Member] C&I/Agricultural Operating Portfolio Segment [Member] 12 Months or More Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss OTHER COMPREHENSIVE INCOME Comprehensive Income (Loss) Note [Text Block] FEDERAL HOME LOAN BANK ADVANCES AND OTHER BORROWINGS Federal Home Loan Bank Advances, Disclosure [Text Block] Loans charged off past due more than days Loans Charged Off Past Due More Than Days Loans charged off past due more than days. Corporate Offices Corporate Offices [Member] Corporate Offices [Member] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Non-interest expense: Noninterest Expense [Abstract] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Commercial/Agricultural Real Estate Commercial/Agricultural Real Estate Portfolio Segment [Member] Commercial/Agricultural Real Estate Portfolio Segment [Member] 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three Termination Date Trading Arrangement Termination Date Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Business Description and Accounting Policies [Text Block] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Incentive stock option expiration period Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] FHLB Investment in Federal Home Loan Bank Stock [Member] Bank Owned Life Insurance (BOLI) Bank Owned Life Insurance [Policy Text Block] Bank Owned Life Insurance Fair Value as of Grant Date Award Grant Date Fair Value Asset Pledged as Collateral Collateral Pledged [Member] Schedule of Available for Sale Securities with Unrealized Losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] (Gains) losses on repossessed assets, net Gain (Loss) on Disposition of Assets Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Arrangement Duration Trading Arrangement Duration Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes, Amount Banking Regulation, Tier 1 Risk-Based Capital, Capital Adequacy, Minimum Consolidation Items [Axis] Consolidation Items [Axis] Loan-to-value ratio (as a percent) Loan-To-Value Ratio, Percentage Loan-To-Value Ratio, Percentage Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Interest on other borrowed funds Interest Expense, Other Other investments Alternative Investment Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Total securities with contractual maturities Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value Vesting period of shares (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Weighted Average Remaining Contractual Term in Years, Exercisable at end of period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted-Average Remaining Contractual Term Common equity tier 1 (to risk weighted assets), To Be Well Capitalized, Amount Common Equity Tier One Risk Based Capital Required To Be Well Capitalized Common Equity Tier One Risk Based Capital Required To Be Well Capitalized Award Type [Domain] Award Type [Domain] 2026 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year FAIR VALUE ACCOUNTING Fair Value Disclosures [Text Block] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 (Level III) Fair Value, Inputs, Level 3 [Member] U.S. government agency obligations US Government Agencies Debt Securities [Member] Remaining lease term (in years) Lessee, Operating Lease, Term of Contract Total Lessor, Operating Lease, Payment to be Received NAV Fair Value Measured at Net Asset Value Per Share [Member] Foreclosed assets, measurement input Foreclosed Assets, Measurement Input Foreclosed Assets, Measurement Input Purchased HELOC loans Home Equity Line of Credit [Member] Number of renewal options Lessee, Operating Lease, Number Of Renewal Options Lessee, Operating Lease, Number Of Renewal Options Other assets Other assets Other Assets 30-59 Days Past Due Financial Asset, 30 to 59 Days Past Due [Member] Liability Class [Axis] Liability Class [Axis] Total capital (to risk weighted assets), Actual, Amount Banking Regulation, Total Capital, Actual Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Non-interest income: Noninterest Income [Abstract] Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Intangible Asset, Finite-Lived [Table] Intangible Asset, Finite-Lived [Table] Weighted-average interest rate (as a percent) Federal Home Loan Bank, Advances, Weighted Average Interest Rate Non-NEOs Non-NEOs [Member] Due after ten years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost Estimated Fair Value Debt Securities, Held-to-Maturity, Fair Value, Maturity [Abstract] Allowance for Credit Losses – Available-for-sale Securities and Held-to-maturity Securities Credit Loss, Financial Instrument [Policy Text Block] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Repurchase shares of common stock Payments for Repurchase of Common Stock Mortgage-backed securities Collateralized Mortgage-Backed Securities [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Schedule of Mortgage Servicing Rights Activity Mortgage Servicing Rights Activity [Table Text 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Class [Axis] All Adjustments to Compensation All Adjustments to Compensation [Member] Other Revenue Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Core Deposits Core Deposits [Member] Income Taxes Income Tax, Policy [Policy Text Block] Net cash from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Risk rating 7 Substandard [Member] Income Statement [Abstract] Income Statement [Abstract] Stockholders’ Equity: Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Tier 1 leverage ratio (to adjusted total assets), For Capital Adequacy Purposes, Amount Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] City Area Code City Area Code Name Forgone Recovery, Individual Name Buildings and Components Buildings And Components [Member] Buildings and components. 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operating leases (as a percent) Operating Lease, Weighted Average Discount Rate, Percent Schedule of Restricted Common Stock Award Nonvested Restricted Stock Shares Activity [Table Text Block] Segment Reporting [Table] Segment Reporting [Table] Stock reserved and available for issuance (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Amortized cost basis Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount Additions/(reversals) to ACL - Loans via provision for credit losses charged to operations (Reversals)/additions to ACL - Unfunded Commitments via provision for credit losses charged to operations Provision for credit losses Provision for Loan, Lease, and Other Losses Time deposits at or above FDIC insurance limit Time Deposits, at or Above FDIC Insurance Limit Schedule of Components of Lease Expense Lease, Cost [Table Text Block] Investment Securities; Available-for-sale and Held-to-maturity Marketable Securities, Policy [Policy Text Block] All Trading Arrangements All Trading Arrangements [Member] Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Current Fiscal Year End Date Current Fiscal Year End Date Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Provision for credit losses Total provision for credit losses Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) Mortgage servicing rights: Servicing Asset at Amortized Cost, Balance [Roll Forward] Estimated costs to sell Measurement Input, Cost to Sell [Member] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Cash dividends paid (USD per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Due in one year or less Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Schedule of Maturity of Securities Investments Classified by Contractual Maturity Date [Table Text Block] Servicing fees Contractually Specified Servicing Fees, Amount Schedule of Common Stock Option Awards Share-Based Payment Arrangement, Option, Activity [Table Text Block] Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Measure: Measure [Axis] Mortgage servicing rights expense, net Servicing Asset At Amortized Cost, Amortization, Net Of Recoveries Servicing Asset At Amortized Cost, Amortization, Net Of Recoveries Total adjustments Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity Equity Components [Axis] Equity Components [Axis] MORTGAGE SERVICING RIGHTS Mortgage Servicing Rights [Text Block] Mortgage Servicing Rights [Text Block] Entity Interactive Data Current Entity Interactive Data Current Variable Rate [Axis] Variable Rate [Axis] Tier 1 leverage ratio (to adjusted total assets), To Be Well Capitalized, Amount Banking Regulation, Tier 1 Leverage Capital, Well Capitalized, Minimum Entity Small Business Entity Small Business Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Advances from FHLB Federal Reserve Bank Advances [Member] Tier 1 leverage ratio (to adjusted total assets), To Be Well Capitalized, Ratio Banking Regulation, Tier 1 Leverage Capital Ratio, Well Capitalized, Minimum Net interest income before provision for credit losses Interest Income (Expense), Operating MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Accrued interest receivable Accrued Interest Receivables Fair Value Disclosures Accrued interest receivables fair value disclosures. Document Type Document Type 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] Federal Home Loan Bank advance long-term maturities Payments On Federal Home Loan Bank Maturities Payments On Federal Home Loan Bank Maturities Aggregate intrinsic value, exercisable at end of period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Tier 1 leverage ratio (to adjusted total assets), Actual, Ratio Banking Regulation, Tier 1 Leverage Capital Ratio, Actual Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Local Phone Number Local Phone Number Other comprehensive income Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Income before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Securities available-for-sale OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Executive Category: Executive Category [Axis] Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Service charges on deposit accounts Noninterest Income, Service Charges On Deposit Accounts Noninterest Income, Service Charges On Deposit Accounts Construction and land development Construction And Land Development [Member] Construction and Land Development [Member] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Schedule of Information Related to Stock Option Plan Employee Stock Ownership Plan (ESOP) Disclosures [Table Text Block] Gain on sale of loans held for sale, net Gain (Loss) on Sales of Loans, Net Supplemental cash flow information: Supplemental cash flow information related to leases was as follows: Supplemental Cash Flow Information [Abstract] PEO Name PEO Name Federal home loan bank advances, interest rate Federal Home Loan Bank, Advances, Interest Rate Financial liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Income taxes Income Tax Paid, before Refund Received Long-Lived Asset, Class [Axis] Long-Lived Asset, Class [Axis] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Schedule of Aging Analysis of the Bank Real Estate and Consumer Loans Financing Receivable, Past Due [Table Text Block] Current Financial Asset, Not Past Due [Member] Exercised (USD per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Revenue Recognition Revenue [Policy Text Block] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Measurement Frequency [Domain] Measurement Frequency [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Stock based compensation expense Share-Based Payment Arrangement, Noncash Expense Interest expense: Interest Expense, Operating and Nonoperating [Abstract] Compensation and related benefits Compensation and related benefits (expense) Labor and Related Expense Subordinated Notes due 2030 Subordinated Notes, 6.75% Due August 2030, Variable Rate Commencing August 2022 [Member] Subordinated Notes, 6.75% Due August 2030, Variable Rate Commencing August 2022 [Member] Total lease cost Lease, Cost Interest on borrowings Interest Paid, Capitalized, Investing Activity Net (increase) decrease in loans Payments for (Proceeds from) Loans and Leases Basic earnings (USD per share) Basic earnings per share (USD per share) Earnings Per Share, Basic Measurement Input Type [Axis] Measurement Input Type [Axis] Insider Trading Arrangements [Line Items] Residential mortgage loans serviced for others Residential Mortgage Loans Serviced For Others Residential Mortgage Loans Serviced For Others Proceeds from principal payments and maturities of available-for-sale securities Proceeds From Maturities And Prepayments Of Debt Securities, Available-for-Sale Proceeds From Maturities And Prepayments Of Debt Securities, Available-for-Sale Bank owned life insurance ("BOLI") Bank Owned Life Insurance Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] Advertising, Marketing and Public Relations Expense Advertising Cost [Policy Text Block] Banks available and unused portion of borrowing agreement Debt Instrument, Unused Borrowing Capacity, Amount Other borrowings Total other borrowings Other Borrowings Foreclosed and repossessed assets, net Foreclosed Assets, Fair Value Disclosure Foreclosed Assets, Fair Value Disclosure Fair Value Measurement [Domain] Fair Value Measurement [Domain] Recoveries Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Current period gross charge-offs, Year two Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff Equity Awards Adjustments Equity Awards Adjustments [Member] Aging analysis of the Bank's real estate and consumer loans Past Due, Financial Instrument [Abstract] Mortgage Servicing Rights Intangible Assets, Finite-Lived, Policy [Policy Text Block] Other liabilities Increase (Decrease) in Other Operating Liabilities Current period gross charge-offs, Revolving to Term Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff Risk rating 1 to 5 Pass [Member] Plan Name [Axis] Plan Name [Axis] Underlying Asset Class [Domain] Underlying Asset Class [Domain] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Income taxes receivable Income Taxes Receivable, Noncurrent Cancelled (shares) Forfeited / Performance shares below target (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period 2026 Omnibus Incentive Plan 2026 Omnibus Incentive Plan [Member] 2026 Omnibus Incentive Plan Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Maximum month-end amounts outstanding Short-Term Debt, Maximum Amount Outstanding During Period Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Entity Filer Category Entity Filer Category Total Debt Securities, Available-for-Sale, Unrealized Loss Position Transfers from loans receivable to other real estate owned ("OREO") Real Estate Owned, Transfer from Real Estate Owned Due in one year or less Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost Advertising, marketing and public relations Advertising Expense Common stock awarded under the equity incentive plan (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures Financial Asset, Aging [Axis] Financial Asset, Aging [Axis] Deposits [Abstract] Deposits [Abstract] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Tax Credits New Markets Tax Credits [Policy Text Block] New Markets Tax Credits Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Issued and vested (USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Provision for income taxes Provision for income taxes (expense) Income Tax Expense (Benefit) Collateralized Loan Obligations Collateralized Loan Obligations [Member] Other Comprehensive Income Comprehensive Income, Policy [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Charge-offs Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Changes in the accumulated balances for each component of other comprehensive income AOCI Attributable to Parent, Net of Tax [Roll Forward] Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Current year-to-date other comprehensive income Other Comprehensive Income (Loss), Net Of Tax, Portion Attributable To Parent, Including Tax Effects Other Comprehensive Income (Loss), Net Of Tax, Portion Attributable To Parent, Including Tax Effects Statement [Table] Statement [Table] Common equity tier 1 (to risk weighted assets), To Be Well Capitalized, Ratio Common Equity Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Common Equity Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Tier 1 capital (to risk weighted assets), To Be Well Capitalized, Ratio Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum Common stock options exercised Cash received from options exercised Proceeds from Stock Options Exercised Certificates of Deposit Certificates of Deposit [Member] Commercial and industrial Commercial And Industrial [Member] Commercial and Industrial [Member] Year two Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Schedule of Nonaccrual Loans Financing Receivable, Nonaccrual [Table Text Block] Mortgage servicing rights Servicing Contracts [Member] Transfers of financial assets Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Aggregation, Policy [Policy Text Block] Loans held for sale - Residential mortgage and SBA /FSA Loan, Held-for-Sale, Fair Value Disclosure Amortized Cost Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Rolling Maturity [Abstract] Interchange income Interchange Income Interchange Income