Receivables [Abstract] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Mortgages [Member] Mortgages [Member] Real Estate Construction [Member] Real Estate Construction [Member] Real Estate Construction. Commercial Portfolio Segment [Member] Commercial Portfolio Segment [Member] Consumer Portfolio Segment [Member] Consumer Portfolio Segment [Member] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Non Purchased Credit Impaired Loans and Leases [Member] 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. Purchased Credit Impaired Loans and Leases [Member] Purchased Credit Impaired Loans and Leases [Member] Purchased Credit Impaired Loans and Leases [Member] NonPCI and PCI Loans [Member] NonPCI and PCI Loans [Member] NonPCI and PCI Loans [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Loans and Leases Receivable, Gross Loans and Leases Receivable, Gross Loans and Leases Receivable, Deferred Income Loans and Leases Receivable, Deferred Income Loans held for investment, net Loans and Leases Receivable, Net of Deferred Income Loans and Leases Receivable, Allowance Loans and Leases Receivable, Allowance Loans and leases, net Loans and Leases Receivable, Net Amount Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract] Other Real Estate and Foreclosed Assets Other Real Estate and Foreclosed Assets [Table Text Block] Other Real Estate and Foreclosed Assets [Table Text Block] Other Foreclosed Assets Rollforward Other Foreclosed Assets Rollforward [Table Text Block] Other Foreclosed Assets Rollforward [Table Text Block] Foreclosed Assets Valuation Allowance Rollforward Foreclosed Assets Valuation Allowance Rollforward [Table Text Block] Foreclosed Assets Valuation Allowance Rollforward [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Long-term Purchase Commitment [Table] Long-term Purchase Commitment [Table] Category of Item Purchased [Axis] Category of Item Purchased [Axis] Long-term Purchase Commitment, Category of Item Purchased [Domain] Long-term Purchase Commitment, Category of Item Purchased [Domain] Private Equity Funds [Member] Private Equity Funds [Member] Long-term Purchase Commitment [Line Items] Long-term Purchase Commitment [Line Items] Commitment To Contribute Capital Commitment To Contribute Capital Commitment To Contribute Capital Purchase Commitment, Remaining Minimum Amount Committed Purchase Commitment, Remaining Minimum Amount Committed Other Assets [Abstract] Other Assets Disclosure [Text Block] Other Assets Disclosure [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Non Purchased Credit Impaired Loans and Leases [Domain] Non Purchased Credit Impaired Loans and Leases [Domain] Non Purchased Credit Impaired Loans and Leases [Domain] Purchased Credit Impaired Loans and Leases [Domain] Purchased Credit Impaired Loans and Leases [Domain] Purchased Credit Impaired Loans and Leases [Domain] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Schedule Of Composition of Loans Portfolio Schedule Of Composition of Loans Portfolio [Table Text Block] [Table Text Block] for Schedule Of Composition of Loans Portfolio [Table] Delinquent loans in loan portfolio Past Due Financing Receivables [Table Text Block] Financing Receivable Non Accrual And Performing Financing Receivable Non Accrual And Performing [Table Text Block] [Table Text Block] for Financing Receivable Non Accrual And Performing [Table] CV of Loans Held for Investment by Class by Classified and Nonclassiified Financing Receivable Credit Quality Indicators [Table Text Block] Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Table Text Block] [Table Text Block] for Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Table] Impaired Financing Receivables, Average Balances And Interest Income Recognized Impaired Financing Receivables, Average Balances And Interest Income Recognized [Table Text Block] Tabular disclosure of impaired financing receivables average balances and interest income recognized. Troubled Debt Restructurings on Financing Receivables Troubled Debt Restructurings on Financing Receivables [Table Text Block] Allowance for Loan Losses Allowance for Credit Losses on Financing Receivables [Table Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill Disclosure Schedule of Goodwill [Table Text Block] Intangible Assets Disclosure Schedule of Finite-Lived Intangible Assets [Table Text Block] Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Investment [Table] Investment [Table] CRA Investments [Axis] CRA Investments [Axis] CRA Investments [Axis] CRA Investments [Domain] CRA Investments [Domain] [Domain] for CRA Investments [Axis] Community Reinvestment Act Investments [Member] Community Reinvestment Act Investments [Member] Community Reinvestment Act Investments [Member] Security Owned Not Readily Marketable [Axis] Security Owned Not Readily Marketable [Axis] Security Owned Not Readily Marketable, Name [Domain] Security Owned Not Readily Marketable, Name [Domain] Equity Investments Without Readily Determinable Fair Value [Member] Equity Investments Without Readily Determinable Fair Value [Member] Equity Investments Without Readily Determinable Fair Value [Member] Investment [Line Items] Investment [Line Items] Equity Method Investment, Other than Temporary Impairment Equity Method Investment, Other than Temporary Impairment Equity Method Investment, Amount Sold Equity Method Investment, Amount Sold Affordable Housing Project Investment, Write-down, Amount Affordable Housing Project Investment, Write-down, Amount Equity Method Investment, Number Sold Equity Method Investment, Number Sold Equity Method Investment, Number Sold Available-for-sale Securities, Equity Securities Available-for-sale Securities, Equity Securities Commitments Disclosure Long-term Purchase Commitment [Table Text Block] Statement [Table] Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Pacific Western Equipment Finance [Member] Pacific Western Equipment Finance [Member] Pacific Western Equipment Finance [Member] Statement [Line Items] Statement [Line Items] Goodwill, Subsequent Recognition of Deferred Tax Asset Goodwill, Subsequent Recognition of Deferred Tax Asset Gain (Loss) on Sale of Capital Leases, Net Gain (Loss) on Sale of Capital Leases, Net Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Aggregate Amortization Expense 2019 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Aggregate Amortization Expense 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Two Aggregate Amortization Expense 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Three Aggregate Amortization Expense 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Four Aggregate Amortization Expense 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Five Life Settlement Contracts, Disclosure [Text Block] Life Settlement Contracts, Disclosure [Text Block] Restricted Cash Balances [Abstract] Restricted Cash Balances [Abstract] Restricted Cash and Cash Equivalents Restricted Cash and Cash Equivalents Pledged Cash for Derivative Contracts Pledged Cash for Derivative Contracts Pledged Cash for Derivative Contracts Fair Value Disclosures [Abstract] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 3 Fair Value, Inputs, Level 3 [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Weighted Average [Member] Weighted Average [Member] Investment Type [Axis] Investment Type [Axis] Investment Securities [Domain] Investments [Domain] Private Label CMOs Covered Private Label Collateralized Mortgage Obligations Member [Domain] Debt securities collateralized by real estate mortgage loans (mortgages), issued by non-governmental sponsored enterprises and covered by FDIC loss sharing agreements, associated with acquisitions. Asset-backed Securities [Member] Asset-backed Securities [Member] Warrant [Member] Warrant [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value Inputs, Prepayment Rate Fair Value Inputs, Prepayment Rate Fair Value Inputs, Probability of Default Fair Value Inputs, Probability of Default Fair Value Inputs, Loss Severity Fair Value Inputs, Loss Severity Fair Value Inputs, Discount Rate Fair Value Inputs, Discount Rate Volatility Fair Value Assumptions, Weighted Average Volatility Rate Risk-free interest rate Fair Value Assumptions, Risk Free Interest Rate Remaining life assumption (in years) Fair Value Assumptions, Expected Term Covered Private Label Collateralized Mortgage Obligations Member [Domain] Other securities [Member] Other securities [Member] Other securities [Member] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, beginning balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Stock and Warrants Purchases During Period Stock and Warrants Purchases During Period Stock and Warrants Purchases During Period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, ending balance Class of Financing Receivable [Axis] Class of Financing Receivable, Type [Axis] Financing Receivable, Recorded Investment, Class of Financing Receivable [Domain] Class of Financing Receivable, Type [Domain] Construction and Land Development [Member] Construction and Land Development [Member] Construction and Land Development [Member] Multi Family [Member] Multifamily [Member] Residential Mortgage [Member] Residential Mortgage [Member] Commercial Real Estate [Member] Commercial Real Estate [Member] Other Real Estate Owned Net Other Real Estate Owned Net Other Real Estate Owned Net Other Real Estate Owned Net including Foreclosed Assets Other Real Estate Owned Net Noncovered including Foreclosed Assets Other Real Estate Owned Net Noncovered including Foreclosed Assets Other Repossessed Assets Other Repossessed Assets Foreclosed assets, net Other Real Estate, Foreclosed Assets, and Repossessed Assets Investments, Debt and Equity Securities [Abstract] Interest Income, Securities, Operating, Taxable Interest Income, Securities, Operating, Taxable Interest Income, Securities, Operating, Tax Exempt Interest Income, Securities, Operating, Tax Exempt Investment Income, Dividend Investment Income, Dividend Investment Income, Interest and Dividend Investment Income, Interest and Dividend Benefit Plans [Abstract] Benefit Plans [Abstract] Minimum Hours Of Work Required By Participants Defined Contribution Plan Minimum Hours Of Work Required By Participants Defined Contribution Plan Minimum Hours Of Work Required By Participants Minimum Age Of Work Required By Participants Defined Contribution Plan Minimum Age Of Work Required By Participants Defined Contribution Plan Minimum Age Of Work Required By Participants Maximum Annual Contributions Per Employee, Percent Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Cost Recognized Defined Contribution Plan, Cost Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock [Member] Common Stock [Member] Shares Of Common Stock [Member] Shares Of Common Stock [Member] Shares Of Common Stock [Member] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Retained Earnings [Member] Treasury Stock [Member] Treasury Stock [Member] Accumulated Other Comprehensive Income (Loss) [Member] AOCI Attributable to Parent [Member] Dividends declared per share (usd per share) Common Stock, Dividends, Per Share, Declared New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income Shares, Outstanding Shares, Outstanding Total stockholders' equity Stockholders' Equity Attributable to Parent Cumulative Effect of New Accounting Principle in Period of Adoption Cumulative Effect of New Accounting Principle in Period of Adoption Net Income Net Income (Loss) Attributable to Parent Other comprehensive loss Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Stock Issued During Period, Shares, Acquisitions Stock Issued During Period, Shares, Acquisitions Issuance of common stock for merger with CapitalSource Inc. Stock Issued During Period, Value, Acquisitions Restricted stock awarded and earned stock compensation, net of shares forfeited, shares Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures net of shares forfeited Stock Granted, Value, Share-based Compensation, Net of Forfeitures Restricted stock surrendered, shares Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Stock Repurchase Program, Number of Shares Authorized to be Repurchased Par Value of Common Stock Repurchased Under Stock Repurchase Program, Amount Par Value of Common Stock Repurchased Under Stock Repurchase Program, Amount Stock Repurchase Program Restricted Stock Award, Forfeitures Common Stock Repurchased Under Stock Repurchase Program, Amount Repurchased Common Stock Repurchased Under Stock Repurchase Program, Amount Repurchased Common Stock Repurchased Under Stock Repurchase Program, Amount Repurchased Dividend reinvestment, shares Stock Issued During Period, Shares, Dividend Reinvestment Plan Dividend reinvestment Stock Issued During Period, Value, Dividend Reinvestment Plan restricted stock Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net Common stock, $2.30/share Dividends, Common Stock, Cash Total stockholders' equity Shares, Outstanding Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition Schedule of Business Acquisitions, by Acquisition [Table Text Block] Quarterly Financial Information Disclosure [Abstract] Schedule of Quarterly Financial Information Quarterly Financial Information [Table Text Block] Premises and Equipment, Net [Abstract] Premises and Equipment, Net [Abstract] Depreciation and Amortization Depreciation Operating Leases, Rent Expense, Gross Operating Leases, Rent Expense Operating Leases, Income Statement, Lease Revenue Operating Leases, Rent Expense, Sublease Rentals Future Minimum Sublease Rental Income Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Financing Receivable, Recorded Investment, Nonaccrual Status Financing Receivable, Recorded Investment, Nonaccrual Status Impaired Financing Receivable Performing Restructured Loans Impaired Financing Receivable Performing Restructured Loans Impaired Financing Receivable Performing Restructured Loans Impaired Financing Receivable, Recorded Investment Impaired Financing Receivable, Recorded Investment Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivables Past Due [Table] Commercial Collateralized Financing Receivable Loan Type [Axis] Commercial Collateralized Financing Receivable Loan Type [Axis] Commercial Collateralized Financing Receivable Loan Type [Axis] Commercial Collateralized Financing Receivable Loan Type [Domain] Commercial Collateralized Financing Receivable Loan Type [Domain] [Domain] for Commercial Collateralized Financing Receivable Loan Type [Axis] Asset Based [Member] Asset Based [Member] Venture Capital Loans [Member] Venture Capital Loans [Member] Venture Capital Loans [Member] Cash Flow [Member] Cash Flow [Member] Equipment Finance Commercial Financing Receivable [Member] Equipment Finance Commercial Financing Receivable [Member] Equipment Finance Commercial Financing Receivable [Member] Other Commercial [Member] Other Commercial [Member] Other Commercial [Member] Mortgage Loans on Real Estate, Loan Type [Axis] Mortgage Loans on Real Estate, Loan Type [Axis] Mortgage Loans on Real Estate, Loan Type [Domain] Mortgage Loans on Real Estate, Loan Type [Domain] Residential Real Estate [Member] Residential Real Estate [Member] Real Estate Construction, Loan Type [Axis] Real Estate Construction, Loan Type [Axis] Real Estate Construction, Loan Type [Axis] Real Estate Construction, Loan Type [Domain] Real Estate Construction, Loan Type [Domain] [Domain] for Real Estate Construction, Loan Type [Axis] Commercial Real Estate Construction Loan Receivable [Member] Commercial Real Estate Construction Loan Receivable [Member] Commercial Real Estate Construction Loan Receivable - replaced with Commercial Real Estate Construction Financing Receivable Residential Real Estate Construction Financing Receivable [Member] Residential Real Estate Construction Financing Receivable [Member] Residential Real Estate Construction Financing Receivable [Member] Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Recorded Investment, Past Due [Line Items] Delinquent loans in loan portfolio Receivables, Past Due [Abstract] Receivables, Past Due [Abstract] 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. Loan Receivable, Recorded Investment, Equal to Greater than 90 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 Financing Receivable, Recorded Investment, Past Due Financing Receivable, Recorded Investment, Past Due Current Financing Receivable, Recorded Investment, Current Loans held for investment, net Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Unobservable Inputs [Axis] Unobservable Inputs [Axis] Unobservable Inputs [Axis] Unobservable Inputs [Domain] Unobservable Inputs [Domain] [Domain] for Unobservable Inputs [Axis] Discount Rates [Member] Discount Rates [Member] Discount Rates [Member] Discounts [Member] Discounts [Member] Discounts [Member] No Discounts [Member] No Discounts [Member] No Discounts [Member] Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Negotiated Discount Payoff From Investors [Member] Negotiated Discount Payoff From Investors [Member] Negotiated Discount Payoff From Investors [Member] Discounted Cash Flow [Member] Discounted Cash Flow [Member] Discounted Cash Flow [Member] Third party appraisals [Domain] Third party appraisals [Domain] Third party appraisals [Domain] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Cost-method Investments [Member] Cost-method Investments [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Measurements, Nonrecurring [Member] 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] Assets, Fair Value Disclosure, Nonrecurring Assets, Fair Value Disclosure, Nonrecurring Condensed Financial Information Of Parent Company [Abstract] Condensed Financial Information Of Parent Company [Abstract] Condensed Financial Statements [Table] Condensed Financial Statements [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Parent Only Parent Company [Member] Condensed Financial Statements, Captions [Line Items] Condensed Financial Statements, Captions [Line Items] Other Income Other Income Total Income Revenues Interest Expense Interest Expense Operating Expenses Operating Expenses Total Expenses Interest And Operating Expenses Interest And Operating Expenses Net earnings from continuing operations Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income Tax Expense (Benefit) Income Tax Expense (Benefit) Income Loss From Continuing Operations Before Income Loss From Equity Method Investments Income Loss From Continuing Operations Before Income Loss From Equity Method Investments Income Loss From Continuing Operations Before Income Loss From Equity Method Investments Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Net earnings Condensed Balance Sheet Condensed Balance Sheet [Table Text Block] Condensed Income Statement Condensed Income Statement [Table Text Block] Condensed Cash Flow Statement Condensed Cash Flow Statement [Table Text Block] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Cash and due from banks Cash and Cash Due From Banks Cash and Cash Due From Banks Interest-earning deposits in financial institutions Interest-bearing Deposits in Banks and Other Financial Institutions Securities available-for-sale, at fair value Securities Available For Sale Including Covered Securities Securities Available For Sale Including Covered Securities Securities available-for-sale, at fair value Available-for-sale Securities Federal Home Loan Bank stock, at cost Federal Home Loan Bank Stock Investment in Federal Home Loan Bank Stock, Fair Value Disclosure Investment in Federal Home Loan Bank Stock, Fair Value Disclosure Loans Receivable Held-for-sale, Amount Loans Receivable Held-for-sale, Amount Cost Method Investments Cost Method Investments Cost Method Investments, Fair Value Disclosure Cost Method Investments, Fair Value Disclosure Loans Receivable, Fair Value Disclosure Loans Receivable, Fair Value Disclosure Warrants and Rights Outstanding Warrants and Rights Outstanding Derivative Asset Derivative Asset Derivative Asset, Fair Value of Collateral Derivative Asset, Fair Value of Collateral Fair Value, Estimate Not Practicable, Equity Method Investments Fair Value, Estimate Not Practicable, Equity Method Investments Derivative Asset, Fair Value, Gross Asset Derivative Asset, Fair Value, Gross Asset Warrants Not Settleable in Cash, Fair Value Disclosure Warrants Not Settleable in Cash, Fair Value Disclosure Deposits, Savings Deposits Deposits, Savings Deposits Interest-bearing Domestic Deposit, Brokered Interest-bearing Domestic Deposit, Brokered Time Deposits Time Deposits Deposits, Fair Value Disclosure Deposits, Fair Value Disclosure Borrowings Long-term Debt Debt and Capital Lease Obligations Debt and Capital Lease Obligations Long-term Debt, Fair Value Long-term Debt, Fair Value Subordinated debentures Subordinated Debt Subordinated Debt Obligations, Fair Value Disclosure Subordinated Debt Obligations, Fair Value Disclosure Derivative Liability Derivative Liability Derivative Liability, Fair Value of Collateral Derivative Liability, Fair Value of Collateral Loans held for sale, at lower of cost or fair value Trade and Loans Receivables Held-for-sale, Net, Not Part of Disposal Group Loans Held-for-sale, Fair Value Disclosure Loans Held-for-sale, Fair Value Disclosure Benefits Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Debt Disclosure [Abstract] Schedule of Debt Schedule of Debt [Table Text Block] Borrowings Subordinated Debentures And Brokered Deposits Disclosure Borrowings Subordinated Debentures And Brokered Deposits Disclosure [Table Text Block] Borrowings Subordinated Debentures And Brokered Deposits Disclosure [Table Text Block] Interest Income (Expense), Net [Abstract] Interest Income (Expense), Net [Abstract] Total interest income Interest and Dividend Income, Operating Interest expense Net interest income Interest Income (Expense), Net Provision for credit losses Provision for Loan, Lease, and Other Losses Interest Income (Expense), after Provision for Loan Loss Interest Income (Expense), after Provision for Loan Loss FDIC loss sharing expense, net Federal Deposit Insurance Corporation Loss Sharing Federal Deposit Insurance Corporation Loss Sharing Noninterest Income [Abstract] Noninterest Income [Abstract] Gain (loss) on sale of securities Gain (Loss) on Investments Noninterest Income, Other Noninterest Income, Other Total noninterest income Noninterest Income Foreclosed Assets (Income) Expense, Net Foreclosed Assets (Income) Expense, Net Foreclosed Assets (Income) Expense, Net Noninterest Expense [Abstract] Noninterest Expense [Abstract] Amortization Amortization of Intangible Assets Acquisition, integration and reorganization costs Business Combination, Acquisition Related Costs Total noninterest expense Noninterest Expense Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent [Abstract] Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent [Abstract] Earnings from continuing operations before taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Earnings Per Share, Diluted Earnings Per Share, Diluted Net earnings from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Earnings Per Share, Basic [Abstract] Earnings Per Share, Basic [Abstract] Basic and diluted earnings per share (usd per share) Earnings Per Share, Basic and Diluted Assets and Liabilities Carried at Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block] Fair Value, Assets Measured on Recurring Basis, Significant Unobservable Inputs (Level 3) Reconciliation Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] Assets carried at fair value on a nonrecurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Net Losses (Gains) on Nonrecurring Assets [Table Text Block] Net Losses (Gains) on Nonrecurring Assets [Table Text Block] Net Losses (Gains) on Nonrecurring Assets [Table Text Block] Fair Value Inputs, Assets, Quantitative Information Fair Value Inputs, Assets, Quantitative Information [Table Text Block] Fair Value, by Balance Sheet Grouping Fair Value, by Balance Sheet Grouping [Table Text Block] Revenue From Contracts With Customers [Abstract] Revenue From Contracts With Customers [Abstract] Contract With Customer, Receivable Reclassified to Other Assets Contract With Customer, Receivable Reclassified to Other Assets Contract With Customer, Receivable Reclassified to Other Assets Contract with Customer, Asset, Reclassified to Receivable Contract with Customer, Asset, Reclassified to Receivable Contract With Customer, Liabilities Reclassified to Other Assets Contract With Customer, Liabilities Reclassified to Other Assets Contract With Customer, Liabilities Reclassified to Other Assets Accounting Policies [Abstract] Business Combinations and Other Purchase of Business Transactions Business Combinations and Other Purchase of Business Transactions, Policy [Policy Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Investment Securities Marketable Securities, Policy [Policy Text Block] Loans and Leases Finance, Loans and Leases Receivable, Policy [Policy Text Block] Allowance for Credit Losses Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Land, Premises and Equipment Land, Premises and Equipment [Policy Text Block] Land, Premises and Equipment [Policy Text Block] Foreclosed Assets Foreclosed assets [Policy Text Block] Foreclosed assets [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Goodwill and Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Stock-based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Derivative Instruments Derivatives, Policy [Policy Text Block] Investments That Do Not Have Readily Determinable Fair Value Equity Method Investments [Policy Text Block] Comprehensive Income Comprehensive Income, Policy [Policy Text Block] Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Business Combinations Business Combinations Policy [Policy Text Block] Business Segments Segment Reporting, Policy [Policy Text Block] Recently issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Business Combination, Separately Recognized Transactions [Axis] Business Combination, Separately Recognized Transactions [Axis] Business Combination, Separately Recognized Transactions [Domain] Business Combination, Separately Recognized Transactions [Domain] CU Bancorp [Member] CU Bancorp [Member] CU Bancorp [Member] Square 1 Financial, Inc. [Member] Square 1 Financial, Inc. [Member] Square 1 Financial, Inc. Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Available-for-sale Securities [Member] Available-for-sale Securities [Member] Federal Home Loan Bank Branch [Axis] Federal Home Loan Bank Branch [Axis] Federal Home Loan Bank Branch [Domain] Federal Home Loan Bank Branch [Domain] Federal Home Loan Bank of San Francisco [Member] Federal Home Loan Bank of San Francisco [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Available For Sale Securities Pledged As Collateral Amortized Cost Available For Sale Securities Pledged As Collateral Amortized Cost Available For Sale Securities Pledged As Collateral Amortized Cost Proceeds from sales of securities available-for-sale Proceeds from Sale of Available-for-sale Securities Available-for-sale Securities, Gross Realized Gains Available-for-sale Securities, Gross Realized Gains Available-for-sale Securities, Gross Realized Losses Available-for-sale Securities, Gross Realized Losses Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassification Adjustments, Net of Tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassification Adjustments, Net of Tax Federal Home Loan Bank Minimum Stock Ownership As Percent Of Outstanding Advances Federal Home Loan Bank Minimum Stock Ownership As Percent Of Outstanding Advances Federal Home Loan Bank Minimum Stock Ownership As Percent Of Outstanding Advances Increase (Decrease) in Marketable Securities, Restricted Increase (Decrease) in Marketable Securities, Restricted Purchases of FHLB Stock Purchases of FHLB Stock Purchases of FHLB Stock FHLB stock Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Federal Home Loan Bank Stock Amount of equity interest in a Federal Home Loan Bank (FHLB), acquired at the acquisition date. Redemptions of FHLB stock Redemptions of FHLB stock Redemptions of FHLB stock during the period Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Performing Financing Receivable [Member] Performing Financial Instruments [Member] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Foreclosed assets, net Loans transferred to foreclosed assets Real Estate Owned, Transfer from Real Estate Owned Other Real Estate and Foreclosed Assets, Other Additions Other Real Estate and Foreclosed Assets, Other Additions Other Real Estate and Foreclosed Assets, Other Additions Provision for Other Real Estate Owned and Foreclosed Assets Provision for Other Real Estate Owned and Foreclosed Assets Provision for Other Real Estate Owned and Foreclosed Assets Sales of Other Real Estate Owned Foreclosed Assets CORES Sale of Foreclosed Assets Sale of Foreclosed Assets that represents the noncash flow aspect of the sale Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Finance Receivable, Modification of Modification of Loans [Axis] Finance Receivable, Modification of Modification of Loans [Axis] Finance Receivable, Modification of Modification of Loans [Axis] Finance Receivable, Modification of Modification of Loans [Domain] Finance Receivable, Modification of Modification of Loans [Domain] [Domain] for Finance Receivable, Modification of Modification of Loans [Axis] Finance Receivable, Modification of Modified Loan [Member] Finance Receivable, Modification of Modified Loan [Member] Finance Receivable, Modification of Modified Loan [Member] 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 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 Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications, Number of Contracts Financing Receivable, Modifications, Number of Contracts Financing Receivable, Modifications, Pre-Modification Recorded Investment Financing Receivable, Modifications, Pre-Modification Recorded Investment Financing Receivable, Modifications, Post-Modification Recorded Investment Financing Receivable, Modifications, Post-Modification Recorded Investment Financing Receivable, Modifications, Subsequent Default, Number of Contracts Financing Receivable, Modifications, Subsequent Default, Number of Contracts Financing Receivable, Modifications, Subsequent Default, Recorded Investment Financing Receivable, Modifications, Subsequent Default, Recorded Investment Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down Other real estate and foreclosed assets [Member] Other real estate and foreclosed assets [Member] Other real estate and foreclosed assets [Member] Dividend Availability and Regulatory Matters [Abstract] Dividend Availability and Regulatory Matters [Abstract] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Pacific Western Bank [Member] Pacific Western Bank [Member] Pacific Western Bank [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier One Leverage Capital Tier One Leverage Capital Tier One Leverage Capital to Average Assets Tier One Leverage Capital to Average Assets Tier One Leverage Capital Required to be Well Capitalized Tier One Leverage Capital Required to be Well Capitalized Tier One Leverage Capital Required to be Well Capitalized to Average Assets Tier One Leverage Capital Required to be Well Capitalized to Average Assets Excess Tier One Leverage Capital Excess Tier One Leverage Capital Tier One Risk Based Common Equity Tier One Risk Based Common Equity Tier One Risk Based Common Equity Tier One Risk Based Common Equity to Risk Weighted Assets Tier 1 Risk Based Common Equity to Risk Weighted Assets Tier 1 Risk Based Common Equity to Risk Weighted Assets Tier One Risk Based Common Equity Required to be Well Capitalized Tier One Risk Based Common Equity Required to be Well Capitalized Tier One Risk Based Common Equity Required to be Well Capitalized Tier One Risk Based Common Equity Required to be Well Capitalized to Risk Weighted Assets Tier One Risk Based Common Equity Required to be Well Capitalized to Risk Weighted Assets Tier One Risk Based Common Equity Required to be Well Capitalized to Risk Weighted Assets Excess Common Equity Tier One Capital Excess Common Equity Tier One Capital Excess Common Equity Tier One Capital Tier One Risk Based Capital Tier One Risk Based Capital Tier One Risk Based Capital to Risk Weighted Assets Tier One Risk Based Capital to Risk Weighted Assets Tier One Risk Based Capital Required to be Well Capitalized Tier One Risk Based Capital Required to be Well Capitalized Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Excess Tier One Risk Based Capital Excess Tier One Risk Based Capital Capital Capital Capital to Risk Weighted Assets Capital to Risk Weighted Assets Capital Required to be Well Capitalized Capital Required to be Well Capitalized Capital Required to be Well Capitalized to Risk Weighted Assets Capital Required to be Well Capitalized to Risk Weighted Assets Excess Capital Excess Capital Borrowings and Subordinated Debentures Debt Disclosure [Text Block] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Line Items] Business Acquisition [Line Items] Business Combinations, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash And Due From Banks Business Combinations, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash And Due From Banks Business Combinations, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash And Due From Banks Cash and due from banks Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Interest‑earning deposits in financial institutions Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Interest Bearing Deposits In Banks Amount of interest-bearing deposits in the bank and other financial institutions for relatively short periods of time, acquired at the acquisition date. Securities available‑for‑sale Loans and leases Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Loans And Leases Receivable Net Reported Amount Covered And Not Covered Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums over and discounts from face amounts, of loans and leases held in portfolio, including loans and leases covered under loss sharing agreements, acquired at the acquisition date. Equipment leased to others under operating leases Equipment Leased To Others Under Operating Leases Equipment Leased To Others Under Operating Leases Premises and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Goodwill Goodwill Core deposit and customer relationship intangibles Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Other assets Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Assets Other Amount of other assets expected to be realized or consumed acquired at the acquisition date. Total assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Noninterest‑bearing deposits Business Combination Identifiable Assets Acquired And Liabilities Assumed Noninterest Bearing Deposit Liabilities The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities, assumed at the acquisition date. Interest‑bearing deposits Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Interest Bearing Deposit Liabilities The aggregate amount of all domestic and foreign interest-bearing deposit liabilities, assumed at the acquisition date. Business Combination Recognized Identifiable Assets And Liabilities Assumed, Total Deposits Business Combination Recognized Identifiable Assets And Liabilities Assumed, Total Deposits Business Combination Recognized Identifiable Assets And Liabilities Assumed, Total Deposits Borrowings Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Liabilities Subordinated debentures Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Subordinated Debentures he amount of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer) including the current and noncurrent portions, assumed at the acquisition date. Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets. Accrued interest payable and other liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities Total liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Cash paid Payments to Acquire Businesses, Gross PacWest common stock issued Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Total consideration paid Business Combination, Consideration Transferred Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net earnings Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Depreciation and amortization Depreciation, Amortization and Accretion, Net Accretion (Amortization) of Discounts and Premiums, Investments Accretion (Amortization) of Discounts and Premiums, Investments Intangible asset amortization Gain on sale of foreclosed assets, net Gains (Losses) on Sales of Other Real Estate Provision for losses on foreclosed assets Provision for Loan Losses Expensed Gain on sale of loans and leases, net Gain (Loss) on Sale of Loans and Leases (Gain) loss on sale of premises and equipment Gain (Loss) on Disposition of Property Plant Equipment (Gain) loss on sale of securities, net Gain (Loss) on Investments, Excluding Other than Temporary Impairments Gain (Loss) on Sale of Insurance Block Gain (Loss) on Sale of Insurance Block Unrealized gain on derivatives and foreign currencies, net Unrealized Gain (Loss) on Derivatives and Foreign Currencies, Net Unrealized Gain (Loss) on Derivatives and Foreign Currencies, Net Earned stock compensation Share-based Compensation Gain (Loss) on Sale of Capital Leases, Net (Increase) decrease in deferred income taxes, net Increase (Decrease) in Income Taxes Tax effect included in stockholders' equity of restricted stock vesting Excess Tax Benefit from Share-based Compensation, Operating Activities Decrease (increase) in other assets Increase (Decrease) in Other Operating Assets (Decrease) increase in accrued interest payable and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Cash acquired in acquisitions, net of cash consideration paid Cash Acquired from Acquisition Proceeds (Net Cash Used) From Branch Sale Proceeds (Net Cash Used) From Branch Sale Proceeds (Net Cash Used) From Branch Sale Net increase in loans and leases Payments for (Proceeds from) Loans and Leases Proceeds from sales of loans and leases Proceeds from Sale of Loans Held-for-investment Proceeds from maturities and paydowns of securities available-for-sale Proceeds from Sale and Maturity of Available-for-sale Securities Purchases of securities available-for-sale Payments to Acquire Available-for-sale Securities Net (purchases) redemptions of Federal Home Loan Bank stock Net change in FLHB Stock Net change in FLHB Stock Proceeds from sales of foreclosed assets Proceeds from Sale of Foreclosed Assets Purchases of premises and equipment, net Payments to Acquire Property, Plant, and Equipment Proceeds from sales of premises and equipment Proceeds from Sale of Property, Plant, and Equipment Proceeds from Sale and Collection of Lease Receivables Proceeds from Sale and Collection of Lease Receivables Proceeds from Life Insurance Policy Proceeds from Life Insurance Policy Net increase in equipment leased to others under operating leases Increase (Decrease) in Leasing Receivables Net cash (used in) provided by investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Net (decrease) increase in noninterest-bearing deposits Increase Decrease In Noninterest Bearing Domestic and Foreign Deposits Increase Decrease In Noninterest Bearing Domestic and Foreign Deposits Net increase (decrease) in interest-bearing deposits Increase Decrease In Interest Bearing Domestic And Foreign Deposits Increase Decrease In Interest Bearing Domestic And Foreign Deposits Net increase (decrease) in borrowings Proceeds from (Repayments of) Debt Early Repayment of Subordinated Debt Early Repayment of Subordinated Debt Common stock repurchased and restricted stock surrendered Restricted stock surrendered Restricted stock surrendered Tax effect of restricted stock vesting included in stockholders' equity Excess Tax Benefit from Share-based Compensation, Financing Activities Cash dividends paid, net Payments of Ordinary Dividends, Common Stock Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net (decrease) increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents, beginning of year Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, end of year Supplemental disclosures of cash flow information: Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid Cash paid for income taxes Income Taxes Paid, Net Real Estate Owned, Transfer to Real Estate Owned Real Estate Owned, Transfer to Real Estate Owned Transfer of Portfolio Loans and Leases to Held-for-sale Transfer of Portfolio Loans and Leases to Held-for-sale Partnership interest transferred to equipment leased to others under operating leases Transfer From Partnership Transfer From Partnership Common stock issued in acquisitions Stock Issued Earnings Per Share [Abstract] Net Income Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Schedule of Future Minimum Rental Payments for Operating Leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Equity Securities [Member] Equity Securities [Member] Government agency and government-sponsored enterprise pass through securities [Member] Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] Private Label Collateralized Mortgage Obligations [Member] Private Label Collateralized Mortgage Obligations [Member] Private Label Collateralized Mortgage Obligations [Member] Collateralized Mortgage Obligations [Member] Collateralized Mortgage Obligations [Member] Municipal Securities [Member] US States and Political Subdivisions Debt Securities [Member] Commercial Mortgage Backed Securities [Member] Commercial Mortgage Backed Securities [Member] US Treasury Securities [Member] US Treasury Securities [Member] Corporate Debt Securities [Member] Corporate Debt Securities [Member] Collateralized Loan Obligations [Member] Collateralized Loan Obligations [Member] SBA asset-backed securities [Member] SBA asset-backed securities [Member] SBA asset-backed securities [Member] New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification Securities available‑for‑sale Assets, Fair Value Disclosure, Recurring Assets, Fair Value Disclosure, Recurring Other Commitments [Table] Other Commitments [Table] Other Commitments [Line Items] Other Commitments [Line Items] Loan commitments to extend credit Loans and Leases Commitments To Extend Credit Loans and Leases Commitments To Extend Credit Standby letters of credit Guarantor Obligations, Maximum Exposure, Undiscounted Unused Commitments to Extend Credit Unused Commitments to Extend Credit Foreclosed Assets Valuation Allowance Foreclosed Assets Valuation Allowance Foreclosed Assets Valuation Allowance Foreclosed Assets, Valuation Allowance, Reductions Related to Sales Foreclosed Assets, Valuation Allowance, Amounts Applied Foreclosed Assets, Valuation Allowance, Amounts Applied Available-for-sale Securities, Amortized Cost Basis Available-for-sale Securities, Amortized Cost Basis Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Revenue From Contracts With Customers [Table Text Block] Revenue From Contracts With Customers [Table Text Block] [Table Text Block] for Revenue From Contracts With Customers [Table] Revenue Recognition of Contracts With Customers [Table Text Block] Revenue Recognition of Contracts With Customers [Table Text Block] Revenue Recognition of Contracts With Customers [Table Text Block] Contract with Customer, Asset and Liability [Table Text Block] Contract with Customer, Asset and Liability [Table Text Block] Federal Current Federal Tax Expense (Benefit) Current State and Local Tax Expense Current State and Local Tax Expense (Benefit) Current Income Tax Expense Current Income Tax Expense (Benefit) Deferred Federal Income Tax Expense Deferred Federal Income Tax Expense (Benefit) Deferred State and Local Income Tax Expense Deferred State and Local Income Tax Expense (Benefit) Deferred Income Tax Expense (Benefit) Deferred Income Tax Expense (Benefit) Income Tax Expense (Benefit), Continuing Operations, Discontinued Operations Income Tax Expense (Benefit), Continuing Operations, Discontinued Operations Deposits [Abstract] Interest checking deposits Interest-bearing Domestic Deposit, Checking Money market deposits Interest-bearing Domestic Deposit, Money Market Savings deposits Interest-bearing Domestic Deposit, Savings Time deposits $250,000 and under Deposits FDIC Insured $250,000 and Under Deposits FDIC Insured $250,000 and Under Time deposits over $250,000 Deposits Exceeding FDIC Insurance Limit of $250,000 Deposits Exceeding FDIC Insurance Limit of $250,000 Total interest-bearing deposits Interest-bearing Deposit Liabilities Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Performance Shares [Member] Performance Shares [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Shares vesting Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Ending balance (Per Share) Share-based Compensation Arrangement by Share-based Payment Award,Equity Instruments Other than Options, Weighted Average Grant Date Fair Value [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award,Equity Instruments Other than Options, Weighted Average Grant Date Fair Value [Roll Forward] Beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Ending balance Summary of Interest Bearing Deposits Summary of Interest Bearing Deposits [Table Text Block] Summary of interest-bearing deposits. Schedule of Maturities Of Time Deposits Schedule of Maturities Of Time Deposits [Table Text Block] Schedule of Maturities Of Time Deposits [Table Text Block] Loans and Leases Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Statement of Financial Position [Abstract] Preferred Stock, Shares Authorized Preferred Stock, Par or Stated Value Per Share Preferred Stock, Value, Outstanding Preferred Stock, Shares Authorized Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common Stock, Shares, Issued, Acquisitions Common Stock, Shares, Issued Equity Instruments Other than Options, Nonvested, Number Treasury Stock, Shares Treasury Stock, Shares Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] CDI and CRI [Member] CDI and CRI [Member] CDI and CRI [Member] Fully Amortized Portion Of Intangibles [Axis] Fully Amortized Portion Of Intangibles [Axis] Fully Amortized Portion Of Intangibles [Axis] Fully Amortized Portion Of Intangibles [Domain] Fully Amortized Portion Of Intangibles [Domain] [Domain] for Fully Amortized Portion Of Intangibles [Axis] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Finite-lived Intangible Assets [Roll Forward] Finite-lived Intangible Assets [Roll Forward] Balance, beginning of year Finite-Lived Intangible Assets, Gross Balance, beginning of year Finite-Lived Intangible Assets, Accumulated Amortization Addition from the CUB acquisition Finite-lived Intangible Assets Acquired Fully amortized portion Finite Lived Intangible Assets Fully Amortized Portion Finite Lived Intangible Assets Fully Amortized Portion Indefinite-lived Intangible Assets, Written off Related to Sale of Business Unit Indefinite-lived Intangible Assets, Written off Related to Sale of Business Unit Write-off due to the asset financing reorganization Impairment of Intangible Assets, Finite-lived Balance, end of year Net CDI and CRI, end of year Net CDI and CRI, end of year Finite-Lived Intangible Assets, Net Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Threshold for loans that are considered individually significant for allowance analysis purposes Threshold for loans that are considered individually significant for allowance analysis purposes Threshold for loans that are considered individually significant for allowance analysis purposes Equity Warrants Transfers to Available For Sale Securities Equity Warrants Transfers to Available For Sale Securities Equity Warrants Transfers to Available For Sale Securities Earnings Per Share Earnings Per Share [Text Block] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Unrecognized Tax Benefits Roll Forward Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Deposits Deposit Liabilities Disclosures [Text Block] Subordinated Debentures Disclosure Table [Abstract] Subordinated Debentures Disclosure Table [Abstract] Subordinated Borrowing [Table] Subordinated Borrowing [Table] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] London Interbank Offered Rate (LIBOR) [Member] London Interbank Offered Rate (LIBOR) [Member] Euribor Rate [Member] Euribor Rate [Member] Euribor Rate [Member] Subordinated Debt Trust V Due September 2033 [Member] 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. Subordinated Debt Trust VI Due September 2033 [Member] Subordinated Debt Trust VI Due September 2033 [Member] This element represents the subordinated debentures series Trust VI, due September 2033. Subordinated debt has a lower priority of repayment in liquidation of the entity's assets. Subordinated Debt Trust CII Due September 2033 [Member] 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. Subordinated Debt Trust VII Due April 2034 [Member] 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. Subordinated Debt Trust CIII Due September 2035 [Member] 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. Subordinated Debt Trust FCCI Due March 2037 [Member] Subordinated Debt Trust FCCI Due March 2037 [Member] Subordinated Debt Trust FCCI Due March 2037 [Member] Subordinated Debt Trust FCBI Due December 2035 [Member] Subordinated Debt Trust FCBI Due December 2035 [Member] Subordinated Debt Trust FCBI Due December 2035 [Member] Trust Preferred Securities Two Thousand Five Series One [Member] Trust Preferred Securities Two Thousand Five Series One [Member] Trust Preferred Securities Two Thousand Five Series One. Trust Preferred Securities Two Thousand Five Series Two [Member] Trust Preferred Securities Two Thousand Five Series Two [Member] Trust Preferred Securities Two Thousand Five Series Two. Two Thousand Six One Term Debt Securitization [Member] Two Thousand Six One Term Debt Securitization [Member] Two thousand six, one term debt securitization. Two Thousand Six Two Term Debt Securitization [Member] Two Thousand Six Two Term Debt Securitization [Member] Two thousand six, two term debt securitization. Trust Preferred Securities Two Thousand Six Series Three [Member] Trust Preferred Securities Two Thousand Six Series Three [Member] Trust Preferred Securities Two Thousand Six Series Three. Trust Preferred Securities Two Thousand Six Series Four [Member] Trust Preferred Securities Two Thousand Six Series Four [Member] Trust Preferred Securities Two Thousand Six Series Four. Trust Preferred Securities Two Thousand Six Series Five [Member] Trust Preferred Securities Two Thousand Six Series Five [Member] Trust Preferred Securities Two Thousand Six Series Five. Two Thousand Seven One Term Debt Securitization [Member] Trust Preferred Securities Two Thousand Seven Series Two [Member] Trust Preferred Securities Two Thousand Seven Series Two. Subordinated Debentures Trust I Due March 2035 [Domain] Subordinated Debentures Trust I Due March 2035 [Domain] Subordinated Debentures Trust I Due March 2035 [Domain] - CUB Subordinated Debentures Trust II Due March 2036 [Member] Subordinated Debentures Trust II Due March 2036 [Member] Subordinated Debentures Trust II Due March 2036 [Member] - CUB Subordinated Debentures Trust III Due September 2036 [Member] Subordinated Debentures Trust III Due September 2036 [Member] Subordinated Debentures Trust III Due September 2036 [Member] - CUB Subordinated Borrowing [Line Items] Subordinated Borrowing [Line Items] Long-term Debt, Gross Long-term Debt, Gross Debt Instrument, Unamortized Discount Debt Instrument, Unamortized Discount Subordinated debentures Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Basis Spread on Variable Rate Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate Debt Instrument Date Issued Debt Instrument Date Issued Debt Instrument Date Issued Debt Instrument, Maturity Date Debt Instrument, Maturity Date Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Description of Variable Rate Basis Liability, Reporting Currency Denominated, Value Liability, Reporting Currency Denominated, Value Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Loans and Leases Receivable, Allowance, beginning balance Loans and Leases Receivable, Allowance, Covered, beginning balance Loans and Leases Receivable, Allowance, Covered Loans and Leases Receivable Allowance Covered And Noncovered, beginning balance Loans and Leases Receivable Allowance Covered And Noncovered Loans and Leases Receivable Allowance Covered And Noncovered Allowance for Loan and Lease Losses, Write-offs Allowance for Loan and Lease Losses, Write-offs Allowance for Loan and Lease Loss, Recovery of Bad Debts Allowance for Loan and Lease Loss, Recovery of Bad Debts Allowance for Loan and Lease Losses Write-offs, Net Allowance for Loan and Lease Losses Write-offs, Net Provision for Loan and Lease Losses Provision for Loan and Lease Losses Loans and Leases Receivable, Allowance, ending balance Loans and Leases Receivable, Allowance, Covered, ending balance Loans and Leases Receivable Allowance Covered And Noncovered, ending balance Financing Receivable, Individually Evaluated for Impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Financing Receivable, Collectively Evaluated for Impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Receivables Acquired With Deteriorated Credit Quality, Allowance For Credit Losses Receivables Acquired With Deteriorated Credit Quality, Allowance For Credit Losses Receivables Acquired With Deteriorated Credit Quality, Allowance For Credit Losses Financing Receivable, Individually Evaluated for Impairment Financing Receivable, Individually Evaluated for Impairment Financing Receivable, Collectively Evaluated for Impairment Financing Receivable, Collectively Evaluated for Impairment Receivables Acquired with Deteriorated Credit Quality Receivables Acquired with Deteriorated Credit Quality Receivables Acquired with Deteriorated Credit Quality Loans and Leases Receivable Net Of Deferred Income Covered And Noncovered Loans and Leases Receivable Net Of Deferred Income Covered And Noncovered Loans and Leases Receivable Net Of Deferred Income Covered And Noncovered Document and Entity Information [Abstract] Document and Entity Information. Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Period End Date Document Period End Date Entity Filer Category Entity Filer Category Document Type Document Type Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Public Float Entity Public Float Contract with Customer, Liability Contract with Customer, Liability Cash Surrender Value of Life Insurance Cash Surrender Value of Life Insurance Interest and fees receivable income Interest and fees receivable income Interest and fees receivable income earned but not yet collected Low Income Housing Tax Credit - LIHTC Low Income Housing Tax Credit - LIHTC Low Income Housing Tax Credit - LIHTC Equity Method Investments, Other Asset Investments Equity Method Investments, Other Asset Investments Equity Method Investments, Other Asset Investments - For ASU 2016-01 and 2018-03 Income Taxes Receivable Income Taxes Receivable Prepaid Expense Prepaid Expense Equity Investments Without Readily Determinable Fair Value Equity Investments Without Readily Determinable Fair Value Equity Investments Without Readily Determinable Fair Value Equity Investments With Readily Determinable Fair Value Equity Investments With Readily Determinable Fair Value Equity Investments With Readily Determinable Fair Value Warrants and Rights Outstanding Equity Warrants Equity Warrants Other Assets, Miscellaneous Other Assets, Miscellaneous Other Assets Other Assets Domestic Deposits, Brokered [Table] Domestic Deposits, Brokered [Table] Domestic Deposits, Brokered Table for Brokered Time Deposits and Brokered Non-maturity Deposits Deposit Product Type [Axis] Deposit Product Type [Axis] Deposit Product Type [Axis] Deposit Product Type [Domain] Deposit Product Type [Domain] [Domain] for Deposit Product Type [Axis] Time Deposits Balance [Domain] Brokered Time Deposits [Member] Brokered Time Deposits [Member] Non-maturity Deposits [Member] Non-maturity Deposits [Member] Non-maturity Deposits [Member] Domestic Deposits, Brokered [Line Items] Domestic Deposits, Brokered [Line Items] [Line Items] for Domestic Deposits, Brokered Table for Brokered Time Deposits and Brokered Non-maturity Deposits Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Dividends [Axis] Dividends [Axis] Dividends [Domain] Dividends [Domain] Dividend Declared [Member] Dividend Declared [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Dividends Payable, Date to be Paid Dividends Payable, Date to be Paid Dividends Payable, Date of Record Dividends Payable, Date of Record 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] Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses Interest on nonaccrual loans Interest on nonaccrual loans Deferred tax asset related to Interest recoveries on nonaccrual loans Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation Deferred Tax Assets, Property, Plant and Equipment Deferred Tax Assets, Property, Plant and Equipment Deferred tax assets, unrealized losses on other real estate owned Deferred tax assets, unrealized losses on other real estate owned The tax effect as of the balance sheet date of timing differences related to unrealized losses on other real estate owned. Deferred Tax Assets, State Taxes Deferred Tax Assets, State Taxes Deferred Tax Assets, Operating Loss Carryforwards Deferred Tax Assets, Operating Loss Carryforwards Deferred Tax Assets, Capital Loss Carryforwards Deferred Tax Assets, Capital Loss Carryforwards Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Deferred Tax Assets, Other Deferred Tax Assets, Other Unrealized Loss From FDIC Assisted Acquisitions Unrealized Loss From FDIC Assisted Acquisitions Unrealized Loss From FDIC Assisted Acquisitions Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross Deferred Tax Assets, Equity Method Investments Deferred Tax Assets, Equity Method Investments Deferred Tax Assets, Goodwill and Intangible Assets Deferred Tax Assets, Goodwill and Intangible Assets Tax Credit Carryforward, Deferred Tax Asset Deferred Tax Assets, Tax Credit Carryforwards Deferred Tax Assets, Gross Deferred Tax Assets, Gross Deferred Tax Assets, Valuation Allowance Deferred Tax Assets, Valuation Allowance Deferred Tax Assets, Net of Valuation Allowance Deferred Tax Assets, Net of Valuation Allowance Deferred Tax Liabilities, Goodwill and Intangible Assets Deferred Tax Liabilities, Goodwill and Intangible Assets Deferred Tax Liabilities, Tax Deferred Income Deferred Tax Liabilities, Tax Deferred Income Deferred Tax Liabilities, Other Comprehensive Income Deferred Tax Liabilities, Other Comprehensive Income Deferred Tax Liabilities, Regulatory Assets Deferred Tax Liabilities, Regulatory Assets Deferred Tax Liabilities, Subordinated Debt Deferred Tax Liabilities, Subordinated Debt Deferred Tax Liabilities, Subordinated Debt Deferred Tax Liabilities, Leasing Arrangements Deferred Tax Liabilities, Leasing Arrangements Deferred Tax Assets, Investments Deferred Tax Assets, Investments Deferred Tax Liabilities, Other Deferred Tax Liabilities, Other Deferred Tax Liabilities, Gross Deferred Tax Liabilities, Gross Deferred Tax Asset (Liability) Deferred Tax Asset (Liability) Deferred Tax Asset (Liability) Deferred Tax Assets, Net Deferred Tax Assets, Net Restricted Cash Balances Cash and Cash Equivalents Disclosure [Text Block] Stockholders' Equity Disclosure [Abstract] Stockholders' Equity Disclosure [Abstract] Shares, Outstanding Treasury Stock, Shares, Acquired Treasury Stock, Shares, Acquired Treasury Stock Acquired, Average Cost Per Share Treasury Stock Acquired, Average Cost Per Share Stock Repurchased and Retired During Period, Shares Stock Repurchased and Retired During Period, Shares Stock Repurchased and Retired During Period, Value Stock Repurchased and Retired During Period, Value Stock Repurchase and Retired During Period, Weighted Average Price Stock Repurchase and Retired During Period, Weighted Average Price Stock Repurchase and Retired During Period, Weighted Average Price Statement of Comprehensive Income [Abstract] Net earnings arising during the year Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax arising during the year Other Comprehensive Income (Loss), Available-for-sale Securities, before Reclassification Adjustments, Tax Unrealized net holding (losses) gains on securities available-for-sale, net of tax Reclassification adjustment for net (gains) losses included in net earnings (1) Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Income tax expense (benefit) related to reclassification adjustment Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax net of tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Other comprehensive (loss) income, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount Income Tax Reconciliation Change In Cash Surrender Value Of Life Insurance Income Tax Reconciliation Change In Cash Surrender Value Of Life Insurance Income Tax Reconciliation Change In Cash Surrender Value Of Life Insurance Income Tax Credits and Adjustments Income Tax Credits and Adjustments Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount Nondeductible acquisition-related expense Income Tax Reconciliation Nondeductible Expense Acquisition Related Cost Income Tax Reconciliation Nondeductible Expense Acquisition Related Cost Nondeductible FDIC Insurance Premiums Nondeductible FDIC Insurance Premiums Nondeductible FDIC Insurance Premiums Deferred Tax Assets, Tax Deferred Expense Effective Income Tax Rate Reconciliation, Tax Settlement, Other, Amount Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Deferred Tax Asset, Capital Loss Carryforward, Expired Deferred Tax Asset, Capital Loss Carryforward, Expired Deferred Tax Asset, Capital Loss Carryforward, Expired Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount