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After one to five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Amortized Cost After five to ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost After ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Within one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value After one to five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value After five to ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value After ten years Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Rolling Twelve Months Within 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[Axis] Financial Asset, Period Past Due [Domain] Financial Asset, Period Past Due [Domain] Deferred tax asset Deferred Income Tax Assets, Net Financial Asset, 30 to 59 Days Past Due [Member] 30-59 Days Past Due [Member] Financial Asset, 60 to 89 Days Past Due [Member] 60-89 Days Past Due [Member] 90 Days or More Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Greater Than 90 Days [Member] Treasury Stock Treasury Stock Shares Treasure stock held (in shares) Mutual funds Mutual Fund [Member] Risk-Weighted Assets Calculation Methodology [Axis] Banking Regulation, Risk-Weighted Assets Calculation Methodology [Axis] Risk-Weighted Assets Calculation Methodology [Domain] Banking Regulation, Risk-Weighted Assets Calculation Methodology [Domain] Common Equity Tier 1 to Risk-Weighted Assets Banking Regulation, Common Equity Tier One Risk-Based Capital [Abstract] Actual, amount Banking Regulation, Common Equity Tier One Risk-Based Capital, Actual Required to be Considered Adequately Capitalized, amount Banking Regulation, Common Equity Tier One Risk-Based Capital, Capital Adequacy, Minimum Required to be considered well capitalized, amount Banking Regulation, Common Equity Tier One Risk-Based Capital, Well Capitalized, Minimum Components of operating lease expense Total lease expense Lease cost Operating lease expense Short-term lease expense Variable lease expense Finance Lease, Liability, to be Paid [Abstract] Operating Lease, Right-of-Use Asset Right-of-use asset Future minimum commitments due under these lease agreements Non-interest income Revenue from Contract with Customer, Excluding Assessed Tax Lessee Lease Description [Table] Lessee Lease Description [Line Items] Increase (Decrease) in Cash and Cash Equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and Cash Equivalents, Beginning of Period Cash and Cash Equivalents, End of Period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Operating cash flows paid for operating lease Finance Lease, Principal Payments Operating cash flows paid for finance lease Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Operating Lease, Weighted Average Discount Rate, Percent Lessee Operating Lease Liability Payments Due Total lease payments Lessee Operating Lease Liability Payments Due After Year Five Thereafter Lessee, Operating Lease, Liability, to be Paid, Year One 2024 Lessee Operating Lease Liability Payments Due Year Four 2027 Lessee Operating Lease Liability Payments Due Year Three 2026 Lessee Operating Lease Liability Payments Due Year Two 2025 Lessee Operating Lease Liability Payments Remainder Of Fiscal Year Remainder of 2023 Lessee Operating Lease Liability Maturity [Table Text Block] Future minimum commitments, Operating lease Finance lease amortization of right-of-use asset Finance Lease, Liability Total Finance Lease, Liability, Undiscounted Excess Amount Less imputed interest Finance Lease, Liability, to be Paid Total lease payments Finance Lease, Liability, to be Paid, after Year Five Thereafter Finance Lease, Liability, to be Paid, Year One 2024 Finance Lease, Liability, to be Paid, Year Four 2027 Finance Lease, Liability, to be Paid, Year Three 2026 Finance Lease, Liability, to be Paid, Year Two 2025 Finance Lease, Liability, to be Paid, Remainder of Fiscal Year Remainder of 2023 Finance Lease, Liability, Fiscal Year Maturity Future minimum commitments, Finance Lease Finance lease interest on lease liability Lease liability Lease liability Total Lessee Operating Lease Liability Undiscounted Excess Amount Less imputed interest Lease Cost [Table Text Block] Components of operating lease expense Lessee, Leases [Policy Text Block] Leases Lessee Operating Leases [Text Block] Leases Measurement Input Type [Axis] Measurement Input Type [Axis] Marketability discount Measurement Input, Discount Rate [Member] Measurement Input Type [Domain] Measurement Input Type [Domain] Loans Held-for-sale, Measurement Input Foreclosed assets held-for-sale, measurement input Operating Lease, Weighted Average Remaining Lease Term Lessee, Operating Lease, Renewal Term Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Amount Equity based compensation Debt Securities, Unrealized Gain (Loss) Unrealized Gain (Loss) Gross gains on available-for-sale securities Debt Securities, Available-for-sale, Realized Gain Gross Realized Gains Unrealized Losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Unrealized Losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Net realized (gains) losses on available-for-sale securities Debt Securities, Available-for-sale, Realized Gain (Loss) Net Realized Gain (Loss) Gross losses on available-for-sale securities Debt Securities, Available-for-sale, Realized Loss, Excluding Other-than-temporary Impairment Gross Realized Losses Gross Realized Losses Equity securities, measurement input Equity Securities Fv Ni Measurement Input Weighted average yield Debt Securities, Available-for-sale, Rolling Maturity, Weighted Average Yield [Abstract] Within one year Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, Year One After one to five years Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, after Year One Through Five Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Asset Pledged As Collateral Number of Securities Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions Number of Securities Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions Fair Value Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months Fair Value Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer After ten years Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, after Year 10 Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Unrealized (loss) gain on cash flow hedges Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Unrealized (loss) gain on cash flow hedges, net of income tax Gain or (Loss) Recognized in OCI on Derivative Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax Less: income tax expense (benefit) Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax Gain or (Loss) Recognized in OCI on Derivative Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent Other comprehensive gain (loss) - cash flow hedges Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease Before Adjustments After Tax Gain or (Loss) Recognized in OCI Excluded Component Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease Adjustments After Tax Gain or (Loss) Recognized in OCI Excluded Component After five to ten years Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, after Year 5 Through 10 Fair Value Debt Securities, Available-for-sale, Unrealized Loss Position Unrealized Losses Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Schedule of Unrealized Loss on Investments Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table Text Block] Number of Securities Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions Equity securities Equity Securities, FV-NI Approximate Fair Value Equity Securities, FV-NI, Cost Amortized Cost Net recognized losses on equity securities Net gains (losses) recognized during the reporting period on equity securities Equity Securities Fv Ni Gain Loss Net recognized gains (losses) on equity securities Less: net gains recognized during the reporting period on equity securities sold during the reporting period Equity Securities Fv Ni Realized Gain Loss Equity Securities, FV-NI, Restricted Restricted equity securities Unrealized gains (losses) recognized during the reporting period on equity securities still held at the reporting date Unrealized gain (losses) recognized during the reporting period on equity securities still held at the reporting date Equity Securities Fv Ni Unrealized Gain Loss Net unrealized losses on equity securities Debt Securities Trading And Equity Securities FvNi [Abstract] Debt Securities Trading And Equity Securities FvNi [Abstract] Equity Securities Equity Securities [Abstract] Financing Receivable, Deferred Commitment Fee Less: Net deferred loan fees and costs Less: Net deferred loan fees and costs Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table] Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table] ASU 2016-13 [Member] Accounting Standards Update 201613 [Member] As Reported under ASU 2016-13 Off Balance Sheet Credit Loss Liability Beginning balance Ending balance Allowance for credit losses on off-balance sheet exposures Credit Loss, Financial Instrument [Policy Text Block] Financial Instruments-Credit Losses Financing Receivable Originated In Current Fiscal Year Current Fiscal Year Financing Receivable Revolving Revolving loans Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal Provision (credit) Financing Receivable, Nonaccrual, Interest Income Interest income recognized on nonaccrual loans Financing Receivable Nonaccrual No Allowance Nonaccrual Loans with no related Allowance Debt Securities, Available-for-Sale, Allowance for Credit Loss Allowance for Credit Loss Off Balance Sheet Credit Loss Liability Rollforward Allowance for Credit Losses on Off-Balance Sheet Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year Fiscal Year Before Latest Fiscal Year Financing Receivable Originated Two Years Before Latest Fiscal Year Two Years Before Latest Fiscal Year Financing Receivable Originated Three Years Before Latest Fiscal Year Three Years Before Latest Fiscal Year Financing Receivable Originated Four Years Before Latest Fiscal Year Four Years Before Latest Fiscal Year Financing Receivable Originated Five Or More Years Before Latest Fiscal Year Five Or More Years Before Latest Fiscal Year Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery Net charge offs Financing Receivable, Nonaccrual [Line Items] Financing Receivable, Nonaccrual [Line Items] Financing Receivable, Nonaccrual [Table] Financing Receivable, Nonaccrual [Table] Financial Asset, Amortized Cost, Accrued Interest, after Allowance for Credit Loss Accrued Interest Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss Accrued interest Financing Receivable Revolving Converted To Term Loan Revolving loans converted to term loans Lessee, Operating Lease, Remaining Lease Term Pledged Status [Axis] Pledged Status [Domain] Required to be Considered Adequately Capitalized, ratio Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum Required to be considered well capitalized, ratio Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum Actual, ratio Banking Regulation, Total Risk-Based Capital Ratio, Actual Actual, ratio Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Actual Required to be Considered Adequately Capitalized, amount Banking Regulation, Tier One Leverage Capital Ratio, Capital Adequacy, Minimum Required to be considered well capitalized, ratio Banking Regulation, Tier One Leverage Capital Ratio, Well Capitalized, Minimum Banking Regulation, Tier One Leverage Capital Ratio, Actual Actual, ratio Banking Regulation, Tier One Risk-Based Capital Ratio, Well Capitalized, Minimum Required to be considered well capitalized, ratio Actual, ratio Banking Regulation, Tier One Risk-Based Capital Ratio, Actual Banking Regulation, Capital Conservation Buffer, Capital Conserved, Minimum Capital conservation buffer Financial Asset Not Past Due [Member] Current [Member] Total Debt Securities, Available-For-Sale, Weighted Average Yield Financial Asset Past Due [Member] Total Past Due [Member] Financing Receivable, Modified, Weighted Average Term Increase from Modification Added a weighted average Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff 2023 Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff 2022 Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff 2021 Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff 2020 Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff 2019 Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff 2018 and Prior Financing Receivable, Revolving, Writeoff Revolving loans Financing Receivable, Revolving, Converted to Term Loan, Writeoff Revolving loans converted to term loans Cover page. Cover [Abstract] Document Type Document Type Document Quarterly Report Document Quarterly Report Document Transition Report Document Transition Report Entity Interactive Data Current Entity Interactive Data Current Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Document Period End Date Document Period End Date Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Entity File Number Entity File Number Entity Tax Identification Number Entity Tax Identification Number Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Current Fiscal Year End Date Current Fiscal Year End Date Entity Current Reporting Status Entity Current Reporting Status Entity Shell Company Entity Shell Company Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth 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[Member] Weighted Average [Member] Weighted Average Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Product and Service [Domain] Product and Service [Domain] Product and Service [Axis] Product and Service [Axis] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption, Adjustment [Member] Cumulative Effect, Period of Adoption, Adjustment Cumulative Effect Period Of Adoption Adjusted Balance [Member] One to Two Years Time Deposit Maturities And Borrowings, Rolling Year Two Time Deposit Maturities And Borrowings, Rolling Year Two Net decrease in employee receivables (Increase) Decrease In Employee Receivables (Increase) Decrease In Employee Receivables Energy [Member] Energy Portfolio Segment [Member] Energy Portfolio Segment Gross Unrealized Gains Equity Securities, FV-NI, Accumulated Gross Unrealized Gain Equity Securities, FV-NI, Accumulated Gross Unrealized Gain Foreclosed assets in settlement of loans Foreclosed Assets In Settlement Of Loans Foreclosed Assets In Settlement Of Loans Available-for-sale securities - tax-exempt Short-Term Investments, Tax-Exempt Short-Term Investments, Tax-Exempt Within One Year Time Deposit Maturities And Borrowings, Next Rolling Twelve Months Time Deposit Maturities And Borrowings, Next Rolling Twelve Months Net decrease in federal funds sold Increase (Decrease) In Federal Funds Sold, Financing Activities Increase (Decrease) In Federal Funds Sold, Financing Activities Net unrealized gain on securities available-for-sale Deferred Tax Liabilities, Unrealized Gains On Available-For-Sale Securities Deferred Tax Liabilities, Unrealized Gains On Available-For-Sale Securities Interest payable and other liabilities Interest Payable And Other Liabilities Interest Payable And Other Liabilities Interest receivable Interest Receivable, Fair Value Disclosure Interest Receivable, Fair Value Disclosure Lease incentive Deferred Tax Assets, Lease Incentive Deferred Tax Assets, Lease Incentive Service charges and fees on customer accounts Service Charges And Fees [Member] Service Charges And Fees [Member] Fair market value adjustments - trust preferred securities Deferred Tax Liabilities, Fair Market Value Adjustments On Securities Deferred Tax Liabilities, Fair Market Value Adjustments On Securities Award performance metric period Share-Based Compensation Arrangement By Share-based Payment Award, Award Performance Metric Period Share-Based Compensation Arrangement By Share-based Payment Award, Award Performance Metric Period Interest payable Interest Payable, Fair Value Disclosure Interest Payable, Fair Value Disclosure ATM and credit card interchange income ATM And Credit Card Interchange Income [Member] ATM And Credit Card Interchange Income [Member] All Other Restricted Stock Units [Member] Restricted Stock Units - All Other [Member] Restricted Stock Units - All Other Minimum Capital Required - Basel III Fully Phased-In [Member] Fully Phase-In [Member] Fully Phase-In [Member] Other borrowings Other Borrowings, Fair Value Disclosure Other Borrowings, Fair Value Disclosure Net decrease in demand deposits, savings, NOW and money market accounts Increase (Decrease) In Demand Deposits, Savings, NOW And Money Market Accounts Increase (Decrease) In Demand Deposits, Savings, NOW And Money Market Accounts Loan fees Deferred Tax Assets, Loan Fees Deferred Tax Assets, Loan Fees Less than 12 Months Available For Sale Securities, Less Than Twelve Months [Abstract] Available For Sale Securities, Less Than Twelve Months [Abstract] Total Time Deposit Maturities And Borrowings Time Deposit Maturities And Borrowings FHLB stock basis Deferred Tax Liabilities, Federal Home Loan Bank Basis Deferred Tax Liabilities, Federal Home Loan Bank Basis Collateral-dependent loans Impaired Financing Receivable, Fair Value Disclosure Impaired Financing Receivable, Fair Value Disclosure Gross Unrealized Losses Equity Securities, FV-NI, Accumulated Gross Unrealized Loss Equity Securities, FV-NI, Accumulated Gross Unrealized Loss Gross Unrealized Losses Debt Securities, Available-For-Sale, And Equity Securities, FV-NI, Accumulated Gross Unrealized Loss Debt Securities, Available-For-Sale, And Equity Securities, FV-NI, Accumulated Gross Unrealized Loss Gross Unrealized Gains Debt Securities, Available-For-Sale, And Equity Securities, FV-NI, Accumulated Gross Unrealized Gain Debt Securities, Available-For-Sale, And Equity Securities, FV-NI, Accumulated Gross Unrealized Gain Two to Three Years Time Deposit Maturities And Borrowings, Rolling Year Three Time Deposit Maturities And Borrowings, Rolling Year Three Foreclosed assets held for sale Repossessed Assets, Held-For-Sale Repossessed Assets, Held-For-Sale Four to Five Years Time Deposit Maturities And Borrowings, Rolling Year Five Time Deposit Maturities And Borrowings, Rolling Year Five Required to be Considered Adequately Capitalized, ratio Common Equity Tier One Capital Required For Capital Adequacy To Risk Weighted Assets Common Equity Tier One Capital Required For Capital Adequacy To Risk Weighted Assets Collateralized mortgage obligations - GSE residential Collateralized Mortgage Obligations, Government Sponsored Entities [Member] Collateralized Mortgage Obligations, Government Sponsored Entities [Member] 2018 Omnibus Equity Incentive Plan [Member] 2018 Omnibus Equity Incentive Plan [Member] 2018 Omnibus Equity Incentive Plan [Member] Available-for-sale securities - taxable Short-Term Investments, Taxable Short-Term Investments, Taxable After Five Years Time Deposit Maturities And Borrowings, After Rolling Year Five Time Deposit Maturities And Borrowings, After Rolling Year Five Required to be considered well capitalized, ratio Common Equity Tier One Capital Required To Be Well Capitalized Ratio Common Equity Tier One Capital Required To Be Well Capitalized Ratio Valuation allowance on real estate Deferred Tax Assets, Valuation Allowance On Real Estate Deferred Tax Assets, Valuation Allowance On Real Estate Restricted Stock Units And Awards [Member] Restricted stock units and awards Restricted Stock And Restricted Stock Units [Member] Restricted Stock And Restricted Stock Units Three to Four Years Time Deposit Maturities And Borrowings, Rolling Year Four Time Deposit Maturities And Borrowings, Rolling Year Four Amortized Cost Debt Securities, Available-For-Sale, And Equity Securities, FV-NI, Amortized Cost Debt Securities, Available-For-Sale, And Equity Securities, FV-NI, Amortized Cost 12 Months or More Available For Sale Securities, Twelve Months Or Longer [Abstract] Available For Sale Securities, Twelve Months Or Longer [Abstract] Approximate Fair Value Debt Securities, Available-For-Sale, And Equity Securities, FV-NI Debt Securities, Available-For-Sale, And Equity Securities, FV-NI Future Lease Commitments [Member] Future Lease Commitment [Member] Future Lease Commitment [Member] Restricted Stock Units - Issued Prior to 2019 [Member] Restricted Stock Units - Issued Prior To 2019 [Member] Restricted Stock Units - Issued Prior To 2019 Collateral-dependent impaired loans, measurement input Impaired Loans, Measurement Input Impaired Loans, Measurement Input Schedule of Time Deposit Maturities and Borrowings Schedule Of Time Deposit Maturities And Borrowings [Table Text Block] Schedule Of Time Deposit Maturities And Borrowings [Table Text Block] Employee receivables from sale of stock Adjustments To Additional Paid In Capital, Employee Receivables From Sale Of Stock Adjustments To Additional Paid In Capital, Employee Receivables From Sale Of Stock Time Deposit Maturities And Borrowings, Fiscal Year Maturity [Abstract] Time Deposit Maturities And Borrowings, Fiscal Year Maturity [Abstract] Time Deposit Maturities And Borrowings, Fiscal Year Maturity [Abstract] Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Other Share Increase (Decrease) In Period Incremental performance shares (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Other Share Increase (Decrease) In Period Share-Based Compensation Arrangements By Share-Based Payment Award, Equity Instruments Other Than Options, Other Share Increase (Decrease) In Period, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangements By Share-Based Payment Award, Equity Instruments Other Than Options, Other Share Increase (Decrease) In Period, Weighted Average Grant Date Fair Value Incremental performance shares (in dollars per share) Organization And Nature Of Operations, Policy [Policy Text Block] Organization and Nature of Operations Organization and Nature of Operations Emerging Growth Company, Policy [Policy Text Block] Emerging Growth Company (EGC) Emerging Growth Company (EGC) Private Equity Security [Member] Equity Securities, FV-NI, Term Acquired privately-held security, term Equity Securities, FV-NI, Extension Term Acquired privately-held security, extension term Equity Securities Received For Satisfaction Of Debt Equity Securities Received For Satisfaction Of Debt Equity securities received for satisfaction of debt Number of subsidiaries Number of subsidiaries Foreclosed assets, net Foreclosed Assets, Net Foreclosed assets, net Greater Than 90 Days And Accruing [Member] Greater Than 90 Days And Accruing [Member] Exercise of warrants shares issued Exercise of warrants shares issued Exercise of warrants (in shares) Exercise of warrants, value of shares issued Exercise of warrants, value of shares issued Exercise of warrants Warrants exercised, cash settled Settlement of warrants Other Comprehensive Income (Loss), Derivative, Included Component, Increase (Decrease), Before Adjustments, After Tax Gain or (Loss) Recognized in OCI Included Component Other Comprehensive Income (Loss), Derivative, Included Component, Increase (Decrease), Before Adjustments, After Tax Other Comprehensive Income (Loss), Derivative, Included Component, Increase (Decrease), Adjustments, After Tax Other Comprehensive Income (Loss), Derivative, Included Component, Increase (Decrease), Adjustments, After Tax Gain or (Loss) Recognized in OCI Included Component Amortized Cost of Collateral Dependent Loans Amortized Cost of Collateral Dependent Loans Related Allowance for Credit Losses Related Allowance for Credit Losses Amortized Cost of Collateral Dependent Loans with no related Allowance Amortized Cost of Collateral Dependent Loans with no related Allowance Commitments related to investment fund [Member] Commitments related to investment fund Commitments Related To Investment Fund [Member] Percentage of loans guranteed Percentage of loans guranteed Drivers of Quarterly Change in the ACL Improved collateral valuation [Member] Improved collateral valuation Improved Collateral Valuation [Member] Credit quality metrics including improved risk ratings [Member] Credit quality metrics including improved risk ratings Credit Quality Metrics Including Improved Risk Ratings [Member] Financing Receivable Balance [Axis] Financing Receivable Balance Financing Receivable Balance Changes [Domain] Loan balance reduction [Member] Loan balance reduction Loan Balance Reduction [Member] Loan balance Increase [Member] Loan balance Increase Loan Balance Increase [Member] Low prices in 2020 and 2021 [Member] Low prices in 2020 and 2021 Low Prices In 2020 And 2021 [Member] Medical practice [Member] Medical Practice [Member] Commercial real estate project Commercial real estate project Commercial Real Estate Project [Member] Financing Receivable, Impaired Interest Income Financing Receivable, Impaired Interest Income Financing receivable, average balance of impaired loans Financing receivable, average balance of impaired loans Stock Warrants [Abstract] Stock Warrants Note Disclosure [Text Block] Stock Warrants Stock Warrants Number of warrants expire next fiscal year Number of warrants expire next fiscal year Number of warrants expire Interest payable and other liabilities Interest payable and other liabilities [Member] Farmers & Stockmens Bank [Member] Farmers & Stockmens Bank FHLB line of credit [Member] FHLB line of credit FHLB Line Of Credit [Member] Legal and Regulatory Proceedings [Abstract] Legal and Regulatory Proceedings [Abstract] Increase decrease in reserves on impaired loans Increase decrease in reserves on impaired loans Operating and finance lease liabilities Operating and finance lease liabilities Lease liability Federal Home Loan Bank line of credit Federal Home Loan Bank line of credit Net proceeds of Federal Home Loan Bank line of credit Net proceeds of Federal Home Loan Bank line of credit Derivative Instrument, Maximum Period Of Exposure Derivative Instrument, Maximum Period Of Exposure Maximum exposure period Award payout percentage Share-based award payout percentage by level of achievement of certain performance target Share-based award payout percentage by level of achievement of certain performance target Non interest Income Atm And Credit Card Interchange Income ATM and credit card interchange income Dividends On Federal Home Loan Bank Stock Dividends on FHLB stock Dividends on FHLB stock Central [Member] Intangible Assets Gross Including Goodwill Gross Carrying Amount Percentage Of Loans Percentage Of Loans Improvement in qualitative factors [Member] Improvement in qualitative factors Improvement In Qualitative Factors [Member] Decrease in reserve on unfunded commitments Decrease in reserve on unfunded commitments Net charge-offs by year of origination [Tabel Text Block] Net Charge-offs By Year of Origination Net charge-offs by year of origination Required to be Considered Adequately Capitalized, amount Banking Regulation, Tier One Risk-Based Capital, Capital Adequacy, Minimum Banking Regulation, Tier One Risk-Based Capital, Capital Adequacy With Buffer, Minimum Banking Regulation, Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum Required to be Considered Adequately Capitalized, ratio Banking Regulation, Tier One Risk-Based Capital Ratio, Capital Adequacy With Bufer Related Party Transactions [Policy Text Block] Related Party Transactions Related Party Transactions Policy. Common Stock Common Stock Outstanding [Member] Common Stock Outstanding Commercial real estate - owner-occupied [Member] Commercial real estate - owner-occupied Commercial Real Estate - Owner-Occupied [Member] Commercial real estate - non-owner-occupied [Member] Commercial Real Estate - Non-Owner-Occupied [Member] Percentage Of Loans Class Modified Percentage Of Loans Class Modified Other Comprehensive Income (Loss), Reclassification adjustment for Interest income on cash flow hedges Reclassification adjustment for interest income included in income Other Comprehensive Income (Loss), Reclassification adjustment for Interest income on cash flow hedges Interest income on cash flow hedges Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for interest income on cashflow hedges tax Less: income tax expense Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Less: tax expense effect Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Interest income on cash flow hedges, Net of Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Interest income on cash flow hedges, Net of Tax Less: reclassification adjustment for interest income included in income, net of income tax Interest income on cash flow hedges, net of tax Canyon Bancorporation [Member] Canyon Bancorporation