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[Table Text Block] Common stock dividends declared per share (usd per share) Common Stock, Dividends, Per Share, Declared Service charges on deposit accounts Total revenue from contracts with customers Revenue from Contract with Customer, Excluding Assessed Tax Euribor Rate Euribor Rate [Member] Euribor Rate [Member] Transfer to Investments Transfer to Investments Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance Loans and Leases Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Other Commercial Other Commercial [Member] Other Commercial [Member] Amortization of Unrealized Net Loss on Securities Transferred From Available-For-Sale to Held-to-Maturity, net of tax OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), after Tax1 OCI, 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Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Federal Reserve Bank Advances Federal Reserve Bank Advances [Member] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Repurchase Agreements Repurchase Agreements [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Reclassification adjustment for net (gains) losses included in net earnings, net of tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax 3-4 Pass [Member] 3-4 Pass [Member] 3-4 Pass [Member] Total noninterest income Noninterest Income Schedule of Occupancy Expense and Supplemental Cash Flow Information Related to Operating Leases Lease, Cost [Table Text Block] Accrued interest payable and other liabilities Accrued Liabilities and Other Liabilities Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Provision Type [Axis] Provision Type [Axis] Expiring provision Interest-earning deposits in financial institutions Interest-bearing Deposits in Banks and Other Financial Institutions Amortization of operating lease ROU assets Operating Lease, Right-of-Use Asset, Amortization Expense Investment in FHLB stock, Fair Value Investment in Federal Home Loan Bank Stock, Fair Value Disclosure Subsequent Events Subsequent Events [Text Block] Restricted stock surrendered Restricted Stock Award, Forfeitures Loan Restructuring and Refinancing Concession Type [Domain] Loan Restructuring and Refinancing Concession Type [Domain] Loan Restructuring and Refinancing Concession Type [Domain] Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Standard & Poor's, AA Rating Standard & Poor's, AA Rating [Member] Treasury stock, at cost (2,924,8038 and 2,778,500 shares at March 31, 2023 and December 31, 2022) Treasury Stock, Value Vesting term Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Initial Rate Spread Initial Rate Spread [Member] Initial Rate Spread Other receivables/assets Other Assets, Miscellaneous Dividend Declared Dividend Declared [Member] Financing Receivable, Troubled Debt Restructuring, Subsequent Default Financing Receivable, Troubled Debt Restructuring, Subsequent Default Fair Value Disclosures [Text Block] Fair Value Measurements Fair Value Disclosures [Text Block] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Aggregate amortization expense 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Three Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Special Mention Special Mention [Member] Available-for-sale Securities Available-for-sale Securities [Member] Assets and Liabilities, Lessor Assets and Liabilities, Lessor [Table Text Block] Assets and Liabilities, Lessor [Table Text Block] Subordinated Borrowing [Line Items] Subordinated Borrowing [Line Items] Origination Date 2019 [Member] Origination Date 2019 [Member] Origination Date 2019 [Member] Interest income: Interest and Dividend Income, Operating [Abstract] Document Period End Date Document Period End Date Land and Acquisitions and Development Loans Land and Acquisitions and Development Loans Land and Acquisitions and Development Loans Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Rolling after One 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 Federal Home Loan Bank Branch [Domain] Federal Home Loan Bank Branch [Domain] Other comprehensive loss, net of tax OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Schedule of Supplemental Balance Sheet Information Related to Operating Leases Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Investment Securities Investment [Text Block] Allowance For Credit Losses, Net charge-offs Financing Receivable, Allowance For Credit Losses, Net Charge-offs Financing Receivable, Allowance For Credit Losses, Net Charge-offs Income Statement Location [Domain] Income Statement Location [Domain] Debt Instrument, Term Debt Instrument, Term Pledged Cash for Derivative Contracts Pledged Cash for Derivative Contracts Pledged Cash for Derivative Contracts Supplemental disclosures of cash flow information: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Interest rate contracts Interest Rate Contracts [Member] Interest Rate Contracts [Member] Interest Receivable Interest Receivable Premises and equipment, net Property, Plant and Equipment, Net Subordinated Debt Trust CII Due September 2033 Subordinated Debt Trust CII Due September 2033 [Member] This element represents the subordinated debentures series Trust CII due September 2033. Subordinated debt has a lower priority of repayment in liquidation of the entity's assets. Net settlements, Equity Warrants Transfers to Available-For-Sale Transfers to Available-For-Sale Total included in other comprehensive income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Standard & Poor's, AA+ Rating Standard & Poor's, AA+ Rating [Member] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Risks and Uncertainties – Market Volatility Risks and Uncertainties – Market Volatility [Text Block] Risks and Uncertainties – Market Volatility Revenues Revenues Leased equipment depreciation Lease Equipment Depreciation Lease Equipment Depreciation Service charges on deposit accounts Service charges on deposit accounts Fees and Commissions, Depositor Accounts1 Fees and Commissions, Depositor Accounts1 Other Commitments [Line Items] Other Commitments [Line Items] Unrealized gain on derivatives, foreign currencies, and credit-linked notes, net Unrealized Gain (Loss) on Derivatives and Foreign Currencies, Net Unrealized Gain (Loss) on Derivatives and Foreign Currencies, Net Interest-bearing deposits Interest-bearing Deposit Liabilities Transfer of Portfolio Loans and Leases to Held-for-sale Transfer of Portfolio Loans and Leases to Held-for-sale Entity Current Reporting Status Entity Current Reporting Status Payment Delay Payment Delay [Member] Payment Delay Other income Noninterest Income, Other Operating Income 1/40th Ownership Interest Preferred Stock, Ownership Interest, Percentage Preferred Stock, Ownership Interest, Percentage 30-89 Days Past Due Receivable, 30-89 days past due Financing Receivable Recorded Investment Thirty to Eighty Nine Days Past Due Financing receivable recorded investment 30 to 89 days past due. Amortization of net premiums on investment securities Accretion (Amortization) of Discounts and Premiums, Investments No Discounts No Discounts [Member] No Discounts [Member] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Gain on sale of premises and equipment Gain (Loss) on Disposition of Property Plant Equipment Allowance for loan and lease losses Allowance for loan and lease losses Balance, beginning of period Balance, end of period Loans and Leases Receivable, Allowance Loans and Leases Receivable, Allowance Combination Term Extension and Interest Rate Reduction Combination Term Extension and Interest Rate Reduction [Member] Combination Term Extension and Interest Rate Reduction Measurement Input, Discount Rate Measurement Input, Discount Rate [Member] Leases [Abstract] Leases [Abstract] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Financing Receivable, Troubled Debt Restructuring [Line Items] Financing Receivable, Troubled Debt Restructuring [Line Items] Total noninterest expense Noninterest Expense Entity Address, Postal Zip Code Entity Address, Postal Zip Code Rate Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate Proceeds from maturities and paydowns of securities held-to-maturity Proceeds from Maturities and Paydowns of Securities Held-to-maturity Proceeds from Maturities and Paydowns of Securities Held-to-maturity Amortization of Unrealized Net Loss on Securities Transferred From Available-For-Sale to Held-to-Maturity, net of tax Amortization of Unrealized Net Loss on Securities Transferred From Available-For-Sale to Held-to-Maturity, net of tax Amortization of Unrealized Net Loss on Securities Transferred From Available-For-Sale to Held-to-Maturity, Net of Tax Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Interest rate and economic contracts Other derivative assets, Fair Value Derivative Asset, Fair Value of Collateral Rate Index (Quarterly Reset) Debt Instrument, Basis Spread on Variable Rate Financing Receivable, Nonaccrual Financing Receivable, Nonaccrual [Table Text Block] Deferred fees, net Loans and Leases Receivable, Deferred Income Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Leased equipment income Lease Equipment Income [Member] Lease Equipment Income [Member] Loans and leases held for investment, net Loans Receivable, Fair Value Disclosure Occupancy Occupancy, Net Credit Facility [Axis] Credit Facility [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Entity Address, Address Line One Entity Address, Address Line One Equity Warrants, Measurement Input, Remaining Life Equity Warrants, Measurement Input, Remaining Life Equity Warrants, Measurement Input, Remaining Life Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Entity Shell Company Entity Shell Company Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Loan Balance Amount Type [Axis] Loan Balance Amount Type [Axis] Loan Balance Amount Type [Axis] Third party appraisals Third party appraisals [Member] Third party appraisals [Domain] 5 Special Mention [Member] 5 Special Mention [Member] 5 Special Mention [Member] Current Fiscal Year End Date Current Fiscal Year End Date Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Single Family Single Family [Member] Contract liabilities, which are included in "Accrued interest payable and other liabilities" Contract With Customer, Liabilities Reclassified to Other Assets Contract With Customer, Liabilities Reclassified to Other Assets Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 10 Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 10 Statement [Table] Statement [Table] Interest-bearing Domestic Deposit, Brokered Interest-bearing Domestic Deposit, Brokered Term Extension and Payment Delay Term Extension and Payment Delay [Member] Term Extension and Payment Delay Investment income Investment Income [Table Text Block] Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Highest Rate of Spread [Axis] Highest Rate of Spread [Axis] Highest Rate of Spread Other Commitments [Axis] Other Commitments [Axis] Unrecognized share based compensation expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Origination Date 2017 [Member] Origination Date 2017 [Member] Origination Date 2017 [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Subsequent Event Subsequent Event [Member] Schedule of Other Assets Schedule of Other Assets [Table Text Block] Net CDI and CRI, end of period Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Net Goodwill Goodwill Denomination value Liability, Reporting Currency Denominated, Value Available-for-sale Investments Classified by Contractual Maturity Date Available-for-sale Investments Classified by Contractual Maturity Date [Table Text Block] Available-for-sale Investments Classified by Contractual Maturity Date Measurement Input, Price Volatility Measurement Input, Price Volatility [Member] Residential Real Estate Construction Financing Receivable Residential Real Estate Construction Financing Receivable [Member] Residential Real Estate Construction Financing Receivable [Member] Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Goodwill Schedule of Goodwill [Table Text Block] Asset-backed Other securities [Member] Other securities [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Trust Preferred Securities Two Thousand Six Series Five Trust Preferred Securities Two Thousand Six Series Five [Member] Trust Preferred Securities Two Thousand Six Series Five. Loans pledged as collateral Loans Pledged as Collateral Operating Lease, Cost Operating Lease, Cost Dividends and gains (losses) on equity investments Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Origination Date 2018 [Member] Origination Date 2018 [Member] Origination Date 2018 [Member] Term Loan Origination Date [Axis] Term Loan Origination Date [Axis] Term Loan Origination Date [Axis] Entity Listings [Table] Entity Listings [Table] Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Warrant (loss) income Proceeds from Warrant Exercises Deposits Interest Expense, Deposits Performance Shares, Two Performance Shares, Two [Member] Performance Shares, Two Dividends [Axis] Dividends [Axis] Income tax (expense) benefit related to unrealized holding gains (losses) arising during the period OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, Tax Aggregate net investment in leases Direct Financing Lease, Net Investment in Lease, before Allowance for Credit Loss Debt Securities, Held-to-maturity, Credit Quality Indicator Debt Securities, Held-to-maturity, Credit Quality Indicator [Table Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Net (loss) earnings Net loss Net Income (Loss) Attributable to Parent Operating lease ROU assets, net (1) Operating Lease, Right-of-Use Asset Securities available-for-sale, at fair value Securities available-for-sale, Carrying Amount Securities Available For Sale Including Covered Securities Securities Available For Sale Including Covered Securities Noninterest-bearing deposits Noninterest-bearing Deposit Liabilities Income Statement Location [Axis] Income Statement Location [Axis] Accumulated Amortization, beginning of period Accumulated Amortization, end of period Finite-Lived Intangible Assets, Accumulated Amortization Statistical Measurement [Domain] Statistical Measurement [Domain] Subordinated Debt Trust FCBI Due December 2035 Subordinated Debt Trust FCBI Due December 2035 [Member] Subordinated Debt Trust FCBI Due December 2035 [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Proceeds from sales of premises and equipment Proceeds from Sale of Property, Plant, and Equipment Undistributed Earnings, Basic Undistributed Earnings, Basic Other foreclosed assets rollforward Other Foreclosed Assets Rollforward [Table Text Block] Other Foreclosed Assets Rollforward [Table Text Block] Insurance and assessments Federal Deposit Insurance Corporation Premium Expense Entity File Number Entity File Number Borrowings Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-term Business Exit Costs Business Exit Costs Trust Preferred Securities Two Thousand Six Series Three Trust Preferred Securities Two Thousand Six Series Three [Member] Trust Preferred Securities Two Thousand Six Series Three. Schedule of Subordinated Borrowing Schedule of Subordinated Borrowing [Table Text Block] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Credit Concentration Risk Credit Concentration Risk [Member] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Noninterest Income Noninterest Income [Member] Noninterest Income [Member] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Variable Lease, Cost Variable Lease, Cost Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Line of Credit Facility, Increase (Decrease), Net Line of Credit Facility, Increase (Decrease), Net Provision for Loan, Leases and Unfunded Loan Commitments Provision for Loan, Leases and Unfunded Loan Commitments Provision for Loan, Leases and Unfunded Loan Commitments Schedule of held-to-maturity securities reconciliation Debt Securities, Held-to-maturity [Table Text Block] Provision for credit losses Financing Receivable, Credit Loss, Expense (Reversal) Foreclosed Assets Other Real Estate Owned and Foreclosed Assets [Table Text Block] [Table Text Block] for Other Real Estate Owned and Foreclosed Assets [Table Text Block] Fair Value Option, Disclosure, Credit-Link Notes Fair Value Option, Disclosure, Credit-Link Notes [Table Text Block] Fair Value Option, Disclosure, Credit-Link Notes Proceeds from maturities and paydowns of securities available-for-sale Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Unrealized net holding gains (losses) on securities available-for-sale arising during the period OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Non Purchased Credit Impaired Loans and Leases Non Purchased Credit Impaired Loans and Leases [Member] Represents information pertaining to loans and leases that were not impaired at the time of purchase. These assets are not accounted for under Accounting Standard Codification Topic 310-30. Federal Reserve Bank Advances Branch of Federal Reserve [Domain] Federal Reserve Bank Advances Branch of Federal Reserve [Domain] [Domain] for Federal Reserve Bank Advances Branch of Federal Reserve [Axis] Other Borrowings Long-term Debt, Percentage Bearing Variable Interest, Amount Credit Facility [Domain] Credit Facility [Domain] ASSETS: Assets [Abstract] Initial Rate Spread [Axis] Initial Rate Spread [Axis] Initial Rate Spread Restricted Cash [Abstract] Restricted Cash [Abstract] Municipal securities Municipal securities US States and Political Subdivisions Debt Securities [Member] Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] Schedule of realized gains and losses on securities available-for-sale Schedule of Realized Gain (Loss) [Table Text Block] Percentage of nonaccrual loans and leases Concentration Risk, Percentage Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Held-to-maturity Securities Held-to-maturity Securities [Member] Debt Instrument [Axis] Debt Instrument [Axis] Commercial Commercial real estate Commercial Real Estate [Member] Trust Preferred Securities Two Thousand Five Series One Trust Preferred Securities Two Thousand Five Series One [Member] Trust Preferred Securities Two Thousand Five Series One. Financial Asset, Aging [Domain] Financial Asset, Aging [Domain] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Cash and due from banks Cash and Cash Due From Banks Cash and Cash Due From Banks Secured Debt [Member] Secured Debt [Member] Federal Home Loan Bank Branch [Axis] Federal Home Loan Bank Branch [Axis] Operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Payment Deferral Payment Deferral [Member] Loans and Leases Receivable Disclosure [Line Items] Loans and Leases Receivable Disclosure [Line Items] Revenue From Contracts With Customers Revenue From Contracts With Customers [Table Text Block] [Table Text Block] for Revenue From Contracts With Customers [Table] LIHTC investments Low Income Housing Tax Credit - LIHTC Low Income Housing Tax Credit - LIHTC Finance Receivable, Loan Modifications, Payment Status Finance Receivable, Loan Modifications, Payment Status [Table Text Block] Finance Receivable, Loan Modifications, Payment Status 2024 Lessee, Operating Lease, Liability, to be Paid, Year Three Standard & Poor's, AA- Rating Standard & Poor's, AA- Rating [Member] Aggregate amortization expense, thereafter Finite-Lived Intangible Asset, Expected Amortization, after Year Five Net losses (gains) on nonrecurring assets Net Losses (Gains) on Nonrecurring Assets [Table Text Block] Net Losses (Gains) on Nonrecurring Assets [Table Text Block] Loan Receivable, Troubled Debt Restructuring [Axis] Loan Receivable, Troubled Debt Restructuring [Axis] Loan Receivable, Troubled Debt Restructuring [Axis] - replaced from Financing Receivable Troubled Debt Restructuring Subordinated debt Subordinated debt Subordinated Debentures Subordinated Debentures Not Part of Long-Term Liabilities Number of Loans Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts Vesting period of time-based restricted stock, lower limit Vesting period of time-based restricted stock, lower limit Vesting period of time-based restricted stock, lower limit 2022 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Next Rolling Twelve Months Two Thousand Seven One Term Debt Securitization Trust Preferred Securities Two Thousand Seven Series Two [Member] Trust Preferred Securities Two Thousand Seven Series Two. Total interest income on investment securities Investment Income, Interest and Dividend Proceeds from sales of loans and leases Proceeds From Sales of Loans and Leases Proceeds From Sales of Loans and Leases Number of shares authorized (shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Operating cash flows from operating leases Operating Lease, Payments Debt Securities, Held-to-maturity [Table] Debt Securities, Held-to-maturity [Table] 2026 Lessor, Operating Lease, Payment to be Received, Year Five Noninterest income: Noninterest Income [Abstract] Balance Long-term Debt, Gross Sales-type and Direct Financing Leases, Lease Receivable, Rolling Maturity [Abstract] Sales-type and Direct Financing Leases, Lease Receivable, Rolling Maturity [Abstract] Finance Lease, Right-of-Use Asset Finance Lease, Right-of-Use Asset, after Accumulated Amortization Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Assets Fair Value Assets, Fair Value Disclosure Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Total liabilities and stockholders' equity Liabilities and Equity Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Lowest Rate of Spread Lowest Rate of Spread [Member] Lowest Rate of Spread Total undiscounted cash flows Lessor, Operating Lease, Payments to be Received 2026 Lessee, Operating Lease, Liability, to be Paid, Year Five Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Financing receivable, nonaccrual status, current Financing Receivable Recorded Investment Nonaccrual Status Current Financing Receivable Recorded Investment Nonaccrual Status Current Real Estate Construction and Land Real Estate Construction [Member] Real Estate Construction. Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Allowance for Loan and Lease Losses, Period Increase (Decrease) Allowance for Loan and Lease Losses, Period Increase (Decrease) Operating Lease, Impairment Loss Operating Lease, Impairment Loss Earnings (Loss) Per Share Earnings Per Share [Text Block] Derivatives [Abstract] Derivatives [Abstract] Derivatives [Abstract] Direct Financing Lease, Net Investment in Leases [Abstract] Direct Financing Lease, Net Investment in Lease, before Allowance for Credit Loss [Abstract] Real Estate Construction, Loan Type [Axis] Real Estate Construction, Loan Type [Axis] Real Estate Construction, Loan Type [Axis] Fair Value, Equity, Level 2 to Level 1 Transfers, Description Fair Value, Equity, Level 2 to Level 1 Transfers, Description Minimum Minimum [Member] Commercial Collateralized Financing Receivable Loan Type [Domain] Commercial Collateralized Financing Receivable Loan Type [Domain] [Domain] for Commercial Collateralized Financing Receivable Loan Type [Axis] Balance Amount outstanding Long-term Line of Credit 2023 Lessee, Operating Lease, Liability, to be Paid, Year Two Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class Finance Receivable, Loan Restructuring and Refinancing, Percent of Amortized Loan Portfolio Class Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Preferred Stock, Shares Authorized Preferred Stock, Shares Authorized Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Borrowings - Credit-Link Notes Borrowings - Credit-Link Notes Borrowings - Credit-Link Notes Contractual Maturities of Securities Available-for-Sale, Fair Value, Due After Ten Years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Gross loans and leases held for investment Loans and Leases Receivable, Gross Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Demand, interest checking, money market, and savings deposits Deposits, Savings Deposits Stock Issued During Period, Value, New Issues Stock Issued During Period, Value, New Issues Cash paid for acquisition, net Payments to Acquire Businesses, Net of Cash Acquired Ten to 18 months Ten to 18 months [Member] Ten to 18 months Equity investments without readily determinable fair values Equity Investments Without Readily Determinable Fair Value Equity Investments Without Readily Determinable Fair Value Reserve for Unfunded Loan Commitments, Balance, beginning of period Reserve for Unfunded Loan Commitments, Balance, end of period Reserve for Unfunded Loan Commitments Reserve for Unfunded Loan Commitments Borrowings and Subordinated Debentures Debt Disclosure [Text Block] Amortized cost of securities sold Available For Sale Investment Securities, Sold At Amortized Cost Available For Sale Investment Securities, Sold At Amortized Cost Stock-Based Compensation Share-based Payment Arrangement [Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Common stock dividends paid Payments of Ordinary Dividends, Common Stock Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Number of Reportable Segments Number of Reportable Segments Stock And Warrants Purchased During Period Value Preferred Stock And Warrants Stock And Warrants Purchased During Period Value Preferred Stock And Warrants Stock And Warrants Purchased During Period Value Preferred Stock And Warrants 2025 Lessor, Operating Lease, Payment to be Received, Year Four Financing Receivable Recorded Investment Total Past Due Financing Receivable Recorded Investment Total Past Due Financing Receivable Recorded Investment Total Past Due Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Assets Sold under Agreements to Repurchase, Carrying Amount Assets Sold under Agreements to Repurchase, Carrying Amount Warranty Income Warranty Income [Member] Warranty Income Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Performance Shares Performance Shares [Member] Finance Receivable, Allowance For Loan Losses Finance Receivable, Allowance For Loan Losses [Table Text Block] Finance Receivable, Allowance For Loan Losses [Table Text Block] Commitments and contingencies Commitments and Contingencies Lowest Rate of Spread [Domain] Lowest Rate of Spread [Domain] Lowest Rate of Spread [Domain] Combination Term Extension and Payment Delay Combination Term Extension and Payment Delay [Member] Combination Term Extension and Payment Delay Subsequent Event [Table] Subsequent Event [Table] Accumulated other comprehensive (loss) income, net Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Emerging Growth Company Entity Emerging Growth Company Other commissions and fees Other Commissions And Fees [Member] Other Commissions And Fees [Member] Equity warrants Equity Warrants Equity Warrants Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest Allowance for Credit Losses, Beginning of Period Allowance for Credit Losses, End of Period Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest Receivables [Abstract] Receivables [Abstract] ROU assets obtained in exchange for lease obligations: Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract] Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract] Proceeds from Issuance of Debt Proceeds from Issuance of Debt 2025 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Rolling Year Four Cover [Abstract] Cover [Abstract] Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] Treasury Stock (shares) Treasury Stock, Shares Financing Receivable, Nonaccrual [Table] Financing Receivable, Nonaccrual [Table] Unrealized losses on investment securities available-for-sale Schedule of Unrealized Loss on Investments [Table Text Block] Debt Securities Exercises and Settlements Debt Securities Exercises and Settlements Debt Securities Exercises and Settlements Less: Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Financial Instrument [Axis] Financial Instrument [Axis] Proceeds from (Repayments of) Debt Proceeds from (Repayments of) Debt Proceeds from BOLI death benefit Proceeds from Life Insurance Policy Debt Securities, Held-to-maturity, Allowance for Credit Loss Debt Securities, Held-to-maturity, Allowance for Credit Loss Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Concentration of Credit or Market Risk [Axis] Concentration of Credit or Market Risk [Axis] Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract] Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract] Finance Receivable, Loan Restructuring and Refinancing, Amortized Costs Balance Finance Receivable, Loan Restructuring and Refinancing, Amortized Costs Balance [Table Text Block] Finance Receivable, Loan Restructuring and Refinancing, Amortized Costs Balance Recently Issued Accounting Standards [Abstract] Recently Issued Accounting Standards [Abstract] Recently Issued Accounting Standards [Abstract] Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss Net increase in loans and leases Payments for (Proceeds from) Loans and Leases Common Stock Common Stock [Member] Other professional services Professional Fees 30 TO 89 Days Past Due 30 To 89 Days Past Due [Member] 30 To 89 Days Past Due Gain on sale of loans and leases Gain on sale of loans and leases Gain (Loss) on Sale of Loans and Leases Recoveries Allowance for Loan and Lease Loss, Recoveries Allowance for Loan and Lease Loss, Recovery of Bad Debts Financial Asset, Aging [Axis] Financial Asset, Aging [Axis] Aggregate amortization expense 2023 Finite-Lived Intangible Asset, Expected Amortization, Year Two Earned stock compensation Share-based Payment Arrangement, Noncash Expense Securities Borrowed Securities Borrowed Equipment leased to others under operating leases Equipment Leased To Others Under Operating Leases Equipment Leased To Others Under Operating Leases Treasury Stock Treasury Stock [Member] Preferred Stock, Liquidation Preference Per Share Preferred Stock, Liquidation Preference Per Share Purchases of securities available-for-sale Payments to Acquire Debt Securities, Available-for-sale Number of loans Financing Receivable, Modifications, Number of Contracts Schedule of New Accounting Pronouncements and Changes in Accounting Principles Accounting Standards Update and Change in Accounting Principle [Table Text Block] Derivative liabilities Derivative Liability, Fair Value of Collateral Notional amount Derivative, Notional Amount Subordinated Debt Trust FCCI Due March 2037 Subordinated Debt Trust FCCI Due March 2037 [Member] Subordinated Debt Trust FCCI Due March 2037 [Member] Cash Collateral Cash Collateral Cash Collateral - Borrowed Credit-Link Notes Subordinated Debt Trust V Due September 2033 Subordinated Debt Trust V Due September 2033 [Member] This element represents the subordinated debentures series Trust V due September 2033. Subordinated debt has a lower priority of repayment in liquidation of the entity's assets. Other Residential Real Estate Other Residential Real Estate [Member] Other Residential Real Estate Purchases of premises and equipment, net Payments to Acquire Property, Plant, and Equipment Volatility Equity Warrants, Measurement Input Equity Warrants, Measurement Input No Finance Receivable Allowance No Finance Receivable Allowance [Member] No Finance Receivable Allowance [Member] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Preferred Stock Dividends, Income Statement Impact Preferred Stock Dividends, Income Statement Impact Preferred Stock Dividends, Income Statement Impact Income tax expense (benefit) related to reclassification adjustment Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Total liabilities Liabilities Liabilities Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Aggregate amortization expense 2022 Finite-Lived Intangible Asset, Expected Amortization, Year One Financing Receivable, Transfer to Held-for-Sale, Valuation Allowance, Expense Financing Receivable, Transfer to Held-for-Sale, Valuation Allowance, Expense Provision Type [Domain] Provision Type [Domain] [Domain] for Expiring provision Measurement Input Type [Axis] Measurement Input Type [Axis] Consolidation Items [Axis] Consolidation Items [Axis] Leases Lessor, Operating Leases [Text Block] Common Stock, Shares, Issued Common Stock, Shares, Issued Preferred stock issued (shares) Preferred Stock, Shares Issued Subordinated notes due May 2031 Subordinated notes due May 2031 [Member] Subordinated notes due May 2031 Cash paid for amounts included in the measurement of lease liabilities: Cash Flow, Lessee [Abstract] Cash Flow, Lessee [Abstract] Net decrease in interest-bearing deposits Increase Decrease In Interest Bearing Domestic And Foreign Deposits Increase Decrease In Interest Bearing Domestic And Foreign Deposits Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss Payments for Repurchase of Warrants Payments for Repurchase of Warrants Loan Restructuring and Refinancing Modifications, Interest Rate Loan Restructuring and Refinancing Modifications, Interest Rate Loan Restructuring and Refinancing Modifications, Interest Rate Entity Address, City or Town Entity Address, City or Town Collectively evaluated Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment 6-8 Classified [Member] 6-8 Classified [Member] 6-8 Classified [Member] Proceeds from sales of foreclosed assets Proceeds from Sale of Foreclosed Assets Gross realized losses Debt Securities, Available-for-sale, Realized Loss Performing Performing Financial Instruments [Member] Subordinated Debt Trust CIII Due September 2035 Subordinated Debt Trust CIII Due September 2035 [Member] This element represents the subordinated debentures series Trust CIII, due September 2035. Subordinated debt has a lower priority of repayment in liquidation of the entity's assets. Measurement Frequency [Domain] Measurement Frequency [Domain] Cash surrender value of BOLI Cash Surrender Value of Life Insurance Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Loans and Leases Receivable Disclosure [Table] Loans and Leases Receivable Disclosure [Table] Total interest expense Interest Expense Federal Reserve Bank Advances Branch of Federal Reserve [Axis] Federal Reserve Bank Advances Branch of Federal Reserve [Axis] Federal Reserve Bank Advances Branch of Federal Reserve [Axis] Total interest income Total interest income Interest and Dividend Income, Operating Data processing Information Technology and Data Processing Operating leases: Operating Lease, Assets And Liabilities, Lessee [Abstract] Operating Lease, Assets And Liabilities, Lessee [Abstract] Retained earnings Retained Earnings (Accumulated Deficit) Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Allowance for Credit Losses, Recoveries Financing Receivable, Allowance for Credit Loss, Recovery Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Entity Filer Category Entity Filer Category PacWest 2017 Stock Incentive Plan [Member] PacWest 2017 Stock Incentive Plan [Member] PacWest 2017 Stock Incentive Plan Gain on sale of securities Net realized gains (losses) Gain (Loss) on Investments U.S. Treasury securities US Treasury Securities [Member] Debt Securities, Held-to-maturity, Maturity [Abstract] Debt Securities, Held-to-maturity, Maturity [Abstract] Finance Receivable Allowance Finance Receivable Allowance [Member] Finance Receivable Allowance [Member] Recently Issued Accounting Standards Accounting Standards Update and Change in Accounting Principle [Text Block] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Amendment Flag Amendment Flag Commercial Commercial Portfolio Segment [Member] Unobservable Inputs [Domain] Unobservable Inputs [Domain] [Domain] for Unobservable Inputs [Axis] Equity Components [Axis] Equity Components [Axis] Time deposits Deposits, Fair Value Disclosure Fair Value Fair Value Disclosures [Abstract] Term Extension and Interest Rate Reduction Term Extension and Interest Rate Reduction [Member] Term Extension and Interest Rate Reduction Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Revenue From Contracts With Customers [Abstract] Revenue From Contracts With Customers [Abstract] Revenue From Contracts With Customers [Abstract] Loans and leases Interest and Fee Income, Loans and Leases 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] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five 90 or More Days Past Due Receivable, 90 or more days past due Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due Loan Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due - replaces Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Product and Service [Axis] Product and Service [Axis] Fair Value Option, Disclosures [Table] Fair Value Option, Disclosures [Table] Loans held for investment, net Loans held for investment, net Loans and Leases Receivable, Net of Deferred Income Preferred stock par value (usd per share) Preferred Stock, Par or Stated Value Per Share Term Loan Origination Date [Domain] Term Loan Origination Date [Domain] [Domain] for Term Loan Origination Date [Axis] Short-term Lease, Cost Short-term Lease, Cost Decrease in accrued interest payable and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Reserve for Unfunded Loan Commitments, Charge-offs Reserve for Unfunded Loan Commitments, Charge-offs Reserve for Unfunded Loan Commitments, Charge-offs Statement [Line Items] Statement [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Restricted stock surrendered (shares) Stock Issued During Period, Shares, Restricted Stock Award, Forfeited CV of loans held for investment by class by performing and nonperforming Financing Receivable Credit Quality Indicators [Table Text Block] Assets Assets [Member] Total investment securities Investments Total loans and leases held for investment, net Loans and leases, net Loans and Leases Receivable, Net Amount Gain (Loss) on Sale of Financing Receivable Gain (Loss) on Sale of Financing Receivable Present value of lease payments Sales-type and Direct Financing Leases, Lease Receivable Securities available-for-sale, at fair value (amortized cost of $5,591,766 and $5,654,617, respectively) Fair Value Debt Securities, Available-for-sale Debt Disclosure [Abstract] Debt Disclosure [Abstract] Interest receivable Interest and fees receivable income Interest and fees receivable income earned but not yet collected Nonaccrual Loans And Leases Benchmark Nonaccrual Loans And Leases Benchmark [Member] Nonaccrual Loans And Leases Benchmark Restricted Stock Amortization Restricted Stock Amortization Restricted Stock Amortization Noninterest expense: Noninterest Expense [Abstract] Unused Lines of Credit Unused lines of Credit [Member] Federal Home Loan Bank stock, at cost Investment in FHLB stock, Carrying Amount Federal Home Loan Bank Stock Total undiscounted cash flows Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received Line of Credit, Current Current outstanding Line of Credit, Current Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Finite Lived Intangible Assets Fully Amortized Portion Finite Lived Intangible Assets Fully Amortized Portion Finite Lived Intangible Assets Fully Amortized Portion Two Thousand Six Two Term Debt Securitization Two Thousand Six Two Term Debt Securitization [Member] Two thousand six, two term debt securitization. Asset Class [Axis] Asset Class [Axis] Loan Contractual Interest Change From Rate Loan Contractual Interest Change From Rate [Member] Loan Contractual Interest Change From Rate Prior [Member] Prior [Member] Prior [Member] Total assets Assets Weighted-average unvested restricted stock outstanding (shares) Weighted Average Number of Shares, Restricted Stock Plan Name [Domain] Plan Name [Domain] Fair Value, Option, Changes in Fair Value, Gain (Loss) Fair Value, Option, Changes in Fair Value, Gain (Loss) Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Lowest Rate of Spread [Axis] Lowest Rate of Spread [Axis] Lowest Rate of Spread Debt Securities, Held-to-maturity, Allowance for Credit Loss Debt Securities, Held-to-maturity, Allowance for Credit Loss [Table Text Block] Net (increase) decrease in equipment leased to others under operating leases Net Increase (Decrease) In Operating Lease, Leased Equipment To Others Net Increase (Decrease) In Operating Lease, Leased Equipment To Others Nonaccrual Nonaccrual [Member] Past due loans were no interest is accruing Private label commercial MBS Mortgage-backed Securities, Issued by Private Enterprises [Member] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Schedule of composition of loans portfolio Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Derivative Contract [Domain] Derivative Contract [Domain] Allowance for Credit Losses, Charge-offs Financing Receivable, Allowance for Credit Loss, Writeoff Government agency and government-sponsored enterprise pass through securities Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Net decrease in noninterest-bearing deposits Increase Decrease In Noninterest Bearing Domestic and Foreign Deposits Increase Decrease In Noninterest Bearing Domestic and Foreign Deposits Subordinated Debt Obligations, Fair Value Disclosure Subordinated Debt Obligations, Fair Value Disclosure Significant Accounting Policies Significant Accounting Policies [Text Block] Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Operating Activities Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Schedule of debt Schedule of Debt [Table Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Subsequent Event [Line Items] Subsequent Event [Line Items] 2024 Sales-type and Direct Financing Leases, Lease Receivable, Lease Payments to be Received, Rolling Year Three Loan Receivable, Troubled Debt Restructuring [Domain] Loan Receivable, Troubled Debt Restructuring [Domain] [Domain] for Loan Receivable, Troubled Debt Restructuring [Axis] - replaced from Financing Receivable Troubled Debt Restructuring Pledged Assets Separately Reported, Securities Pledged as Collateral, at Fair Value Pledged Assets Separately Reported, Securities Pledged as Collateral, at Fair Value Weighted-average basic shares outstanding (shares) Weighted Average Number of Shares Outstanding, Basic Residential Portfolio Segment Residential Portfolio Segment [Member] Diluted (usd per share) Diluted net income per share (usd per share) Earnings Per Share, Diluted Cash paid for income taxes Income Taxes Paid, Net Real Estate Construction, Loan Type [Domain] Real Estate Construction, Loan Type [Domain] [Domain] for Real Estate Construction, Loan Type [Axis] Foreclosed assets expense (income), net Foreclosed Real Estate (Income) Expense Foreclosed Real Estate (Income) Expense Lease, Cost [Abstract] Lease, Cost [Abstract] Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Contract with Customer, Liability Contract with Customer, Liability Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Asset-based Asset Based [Member] Standard & Poor's, A- Rating Standard & Poor's, A- Rating [Member] Corporate Debt Securities Corporate Debt Securities [Member] Deferred costs and other Direct Financing Lease, Deferred Selling Profit And Other Direct Financing Lease, Deferred Selling Profit And Other Customer related expense Customer Related Expense Customer Related Expense Fair value, assets measured on recurring basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Other assets Other assets Other Assets Fair Value Election Fair Value Election [Policy Text Block] Fair Value Election Subordinated Debentures Subordinated Debt [Member] Financial Instruments [Domain] Financial Instruments [Domain] PacWest 2017 Revised Stock Incentive Plan PacWest 2017 Revised Stock Incentive Plan [Member] PacWest 2017 Revised Stock Incentive Plan [Member] Contractual Maturities of Securities Available-for-Sale, Fair Value, Due After Five Years Through Ten Years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Corporate Debt, Measurement Input Corporate Debt, Measurement Input Corporate Debt, Measurement Input Reserve for Unfunded Commitments, Provision (negative provision) Reserve for Unfunded Commitments, Provision Reserve for Unfunded Commitments, Provision Taxes receivable Income Taxes Receivable Restricted stock awarded and earned compensation, net of shares forfeited (shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Provision for credit losses Provision for Loan, Lease, and Other Losses Entity Central Index Key Entity Central Index Key Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-maturity Securities [Line Items] Contractual Interest Rate Reduction Contractual Interest Rate Reduction [Member] Subordinated Debt Trust VII Due April 2034 Subordinated Debt Trust VII Due April 2034 [Member] This element represents the subordinated debentures series Trust VII, due April 2034. Subordinated debt has a lower priority of repayment in liquidation of the entity's assets. Lease, Cost, Total Lease, Cost Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] Contractual Maturities of Securities Available-for-Sale, Amortized Cost, Due Within One Year Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Collateral-dependent Finance Receivable Collateral-dependent Finance Receivable [Table Text Block] Collateral-dependent Finance Receivable [Table Text Block] Dividends and Gains (Losses) on Equity Investments Dividends and Gains (Losses) on Equity Investments Dividends and Gains (Losses) on Equity Investments Individually evaluated Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Origination Date 2021 [Member] Origination Date 2021 [Member] Origination Date 2021 Agency residential MBS Residential Mortgage Backed Securities [Member] Net purchases of Federal Home Loan Bank stock Net change in FLHB Stock Net change in FLHB Stock Term Loans By Origination Date [Member] Term Loans By Origination Date [Member] Term Loans By Origination Date [Member] Lender Name [Axis] Lender Name [Axis] Deposits in financial institutions Interest Income, Deposits with Financial Institutions Debt Instrument [Line Items] Debt Instrument [Line Items] Trading Symbol Trading Symbol Credit-Link Notes Credit-Link Notes [Member] Credit-Link Notes Individually evaluated Financing Receivable, Individually Evaluated for Impairment Gross Unrealized Losses Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss (Increase) decrease in other assets Increase (Decrease) in Other Operating Assets SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Axis] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Axis] Net proceeds from preferred stock offering Proceeds from Issuance of Preferred Stock and Preference Stock Current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Warrant (loss) income Warrant income Warrant income Reserve for Unfunded Loan Commitments, Net charge-offs Reserve for Unfunded Loan Commitments, Net Charge-offs Reserve for Unfunded Loan Commitments, Net Charge-offs Proceeds from sales of securities available-for-sale Proceeds from Sale of Debt Securities, Available-for-sale Warrant Warrant [Member] Financing Receivable, Nonaccrual, No Allowance Financing Receivable, Nonaccrual, No Allowance Measurement Input, Risk Free Interest Rate Measurement Input, Risk Free Interest Rate [Member] (Loss) earnings per common share: Earnings Per Share, Basic and Diluted [Abstract] Compensation Labor and Related Expense Net (loss) earnings Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Investments [Domain] Investments [Domain] Other real estate and foreclosed assets Other real estate and foreclosed assets [Member] Other real estate and foreclosed assets [Member] Net (charge-offs) recoveries Allowance for Loan and Lease Losses Write-offs, Net Total cash, cash equivalents, and restricted cash Cash, cash equivalents, and restricted cash, beginning of period Cash, cash equivalents, and restricted cash, end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Loans transferred to foreclosed assets Real Estate Owned, Transfer to Real Estate Owned Origination Date 2020 [Member] Origination Date 2020 [Member] Origination Date 2020 [Member] Common Stock par value (usd per share) Common Stock, Par or Stated Value Per Share Standby letters of credit Guarantor Obligations, Maximum Exposure, Undiscounted Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] CDI and CRI Balance, beginning of period CDI and CRI Balance, end of period Finite-Lived Intangible Assets, Gross Bank Term Funding Program Bank Term Funding Program [Member] Bank Term Funding Program Intangible assets disclosure Schedule of Finite-Lived Intangible Assets [Table Text Block] External Credit Rating, Standard & Poor's [Domain] External Credit Rating, Standard & Poor's [Domain] Finance Receivables - Loan Restructuring & Refinancing Modifications Finance Receivables - Loan Restructuring & Refinancing Modifications [Table Text Block] Finance Receivables - Loan Restructuring & Refinancing Modifications, Financial Effect 1-2 High Pass [Member] 1-2 High Pass [Member] 1-2 High Pass [Member] Warrants and Rights Outstanding Warrants and Rights Outstanding Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Fair Value, Measurements, Recurring Fair Value, Recurring [Member] Maturity Overnight [Member] Maturity Overnight [Member] Fair Value Quantitative Inputs and Assumptions for Outside Services Fair Value Quantitative Inputs and Assumptions for Outside Services [Table Text Block] Fair Value Quantitative Inputs and Assumptions for Outside Services Total Unused Commitments to Extend Credit Aggregate amortization expense 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Five Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Derivate Contracts [Domain] Derivate Contracts [Domain] [Domain] for Derivate Contracts [Axis] Loan expense Loan Expense Loan expenses that include legal fees, collection expenses, credit reports and fees paid to government agencies on recovered assets. Business Assets [Member] Business Assets [Member] Business Assets [Member] Class of Stock [Domain] Class of Stock [Domain] Reserve Account Required Percent Reserve Account Required Percent Reserve Account Required Percent Other Commitments Other Commitments [Table Text Block] Preferred stock dividends paid Payments of Ordinary Dividends, Preferred Stock and Preference Stock Sales-type and Direct Financing Leases, Lease Receivable, Maturity Sales-type and Direct Financing Leases, Lease Receivable, Maturity [Table Text Block] Time-Based Restricted Stock Awards Time-Based Restricted Stock Awards [Member] Time-Based Restricted Stock Awards [Member] Borrowing capacity description Line of Credit Facility, Maximum Borrowing Capacity Other Real Estate Owned Net Other Real Estate Owned Net Other Real Estate Owned Net Commitments to contribute capital to small business investment companies and CRA-related loan pools Commitment To Contribute Capital to CRA Related Pool Commitment To Contribute Capital to CRA Related Pool Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Finance Receivable, Loan Restructuring and Refinancing, Amortized Balance Finance Receivable, Loan Restructuring and Refinancing, Payment Status Finance Receivable, Loan Restructuring and Refinancing, Payment Status Liability Liability [Member] Loans Held-for-sale, Fair Value Disclosure Loans Held-for-sale, Fair Value Disclosure Asset-backed Securities Asset-backed Securities [Member] Loan Restructuring and Refinancing Concession Type [Axis] Loan Restructuring and Refinancing Concession Type [Axis] Loan Restructuring and Refinancing Concession Type Amount of the allowance applicable to loans and leases: Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] Real Estate Mortgage Mortgages [Member] Allowance for Credit Losses, Balance, beginning of period Allowance for Credit Losses, Balance, end of period Financing Receivable, Allowance for Credit Loss Preferred Stock Preferred Stock [Member] The ending balance of the loan and lease portfolio is composed of loans and leases: Financing Receivable, Allowance for Credit Loss, Additional Information, Portfolio Composition [Abstract] Financing Receivable, Allowance for Credit Loss, Additional Information, Portfolio Composition [Abstract] Contractual Maturities of Securities Available-for-Sale, Amortized Cost, Due After Ten Years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Depreciation and amortization Depreciation, Amortization and Accretion, Net Fair value inputs, assets, quantitative information Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Trust Preferred Securities Two Thousand Five Series Two Trust Preferred Securities Two Thousand Five Series Two [Member] Trust Preferred Securities Two Thousand Five Series Two. Performance Shares, One Performance Shares, One [Member] Performance Shares, One 2024 Lessor, Operating Lease, Payment to be Received, Year Three Allowance for Loan and Lease Losses, Write-offs Gross Charges By Origination Year Gross Charges By Origination Year Organization Nature of Operations [Text Block] Contractual Maturities of Securities Available-for-Sale, Fair Value, Due Within One Year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Unamortized discount Debt Instrument, Unamortized Discount Federal Home Loan Bank of San Francisco Federal Home Loan Bank of San Francisco [Member] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Highest Rate of Spread [Domain] Highest Rate of Spread [Domain] Highest Rate of Spread [Domain] Vesting period of time-based restricted stock, higher limit Vesting period of time-based restricted stock, higher limit Vesting period of time-based restricted stock, higher limit AFX short-term borrowings American Financial Exchange [Member] American Financial Exchange [Member] Classified Classified [Member] Classified [Member] Collateralized loan obligations Collateralized Loan Obligations [Member]