Debt Disclosure [Abstract] Subordinated Borrowing [Table] Subordinated Borrowing [Table] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Euribor Rate Euribor Rate [Member] Euribor Rate [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] 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. Subordinated Debt Trust VI Due September 2033 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 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 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 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 Subordinated Debt Trust FCCI Due March 2037 [Member] Subordinated Debt Trust FCCI Due March 2037 [Member] Subordinated Debt Trust FCBI Due December 2035 Subordinated Debt Trust FCBI Due December 2035 [Member] Subordinated Debt Trust FCBI Due December 2035 [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. 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. Two Thousand Six One Term Debt Securitization Two Thousand Six One Term Debt Securitization [Member] Two thousand six, one term debt securitization. Two Thousand Six Two Term Debt Securitization Two Thousand Six Two Term Debt Securitization [Member] Two thousand six, two term debt securitization. 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. Trust Preferred Securities Two Thousand Six Series Four 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 Trust Preferred Securities Two Thousand Six Series Five [Member] Trust Preferred Securities Two Thousand Six Series Five. Two Thousand Seven One Term Debt Securitization Trust Preferred Securities Two Thousand Seven Series Two [Member] Trust Preferred Securities Two Thousand Seven Series Two. Subordinated Borrowing [Line Items] Subordinated Borrowing [Line Items] Amount Long-term Debt, Gross Rate Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate Date Issued Debt Instrument Date Issued Debt Instrument Date Issued Maturity Date Debt Instrument, Maturity Date Rate Index (Quarterly Reset) Debt Instrument, Basis Spread on Variable Rate Unamortized discount Debt Instrument, Unamortized Discount Net subordinated debentures Subordinated Debt Denomination value Liability, Reporting Currency Denominated, Value Description of variable rate basis Debt Instrument, Description of Variable Rate Basis 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] Real Estate Mortgage Mortgages [Member] Real Estate Construction and Land Real Estate Construction [Member] Real Estate Construction. Commercial Commercial Portfolio Segment [Member] Consumer Consumer Portfolio Segment [Member] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] NonPCI and PCI Loans NonPCI and PCI Loans [Member] NonPCI and PCI Loans [Member] 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. Purchased Credit Impaired Loans and Leases Purchased Credit Impaired Loans and Leases [Member] Purchased Credit Impaired Loans and Leases [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Gross loans and leases held for investment Loans and Leases Receivable, Gross Deferred fees, net Loans and Leases Receivable, Deferred Income Loans held for investment, net Loans and Leases Receivable, Net of Deferred Income Allowance for loan and lease losses Loans and Leases Receivable, Allowance Total loans and leases held for investment, net Loans and Leases Receivable, Net Amount Revenue From Contracts With Customers [Abstract] Revenue From Contracts With Customers [Abstract] Revenue from Contracts with Customers Revenue from Contract with Customer [Text Block] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] 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] Residential Real Estate Construction Financing Receivable Residential Real Estate Construction Financing Receivable [Member] Residential Real Estate Construction Financing Receivable [Member] Commercial Real Estate Construction Loan Receivable Commercial Real Estate Construction Loan Receivable [Member] Commercial Real Estate Construction Loan Receivable - replaced with Commercial Real Estate Construction Financing Receivable 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] Commercial Commercial Real Estate [Member] Residential Real Estate Residential Real Estate [Member] 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] Venture Capital Loans Venture Capital Loans [Member] Venture Capital Loans [Member] Other Commercial Other Commercial [Member] Other Commercial [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] Number of loans Financing Receivable, Modifications, Number of Contracts Pre-Modification Outstanding Recorded Investment Financing Receivable, Modifications, Pre-Modification Recorded Investment Post-Modification Outstanding Recorded Investment Financing Receivable, Modifications, Post-Modification Recorded Investment Number of Loans Financing Receivable, Modifications, Subsequent Default, Number of Contracts Commitments and Contingencies Disclosure [Abstract] Commitments disclosure Long-term Purchase Commitment [Table Text Block] Revenue From Contracts With Customers Revenue From Contracts With Customers [Table Text Block] [Table Text Block] for Revenue From Contracts With Customers [Table] Revenue Recognition of Contracts With Customers Revenue Recognition of Contracts With Customers [Table Text Block] Revenue Recognition of Contracts With Customers [Table Text Block] Contract with Customer, Asset and Liability Contract with Customer, Asset and Liability [Table Text Block] Statement of Comprehensive Income [Abstract] Net earnings Net Income (Loss) Attributable to Parent Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized net holding gains (losses) on securities available-for-sale arising during the period Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Income tax (expense) benefit related to unrealized holding gains (losses) arising during the period Other Comprehensive Income (Loss), Available-for-sale Securities, before Reclassification Adjustments, Tax Unrealized net holding gains (losses) on securities available-for-sale, net of tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassification Adjustments, Net of Tax Reclassification adjustment for net (gains) losses included in net earnings 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 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 Other comprehensive income (loss), 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 Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivables Past Due [Table] Asset Based Asset Based [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. 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 Total Past Due Financing Receivable, Recorded Investment, Past Due Current Financing Receivable, Recorded Investment, Current Fair Value Disclosures [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Other real estate and foreclosed assets Other real estate and foreclosed assets [Member] Other real estate and foreclosed assets [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Nonrecurring 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] Total losses Total Net Gain (Loss) from Nonrecurring Assets Total Net Gain (Loss) from Nonrecurring Assets Loan Receivable Held-For-Sale, Charge-offs Loan Receivable Held-For-Sale, Charge-offs Loan Receivable Held-For-Sales, Charge-offs incurred when loan was transferred from Held-For-Investment Other Real Estate Owned Net Covered and NonCovered Including Foreclosed Assets [Abstract] Other Real Estate Owned Net Covered and NonCovered Including Foreclosed Assets [Abstract] 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] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Interest Income Interest [Member] Interest [Member] Service charges on deposit accounts Service Charges On Deposit Accounts [Member] Service Charges On Deposit Accounts [Member] Other commissions and fees Other Commissions And Fees [Member] Other Commissions And Fees [Member] Leased equipment income Lease Equipment Income [Member] Lease Equipment Income [Member] Gain on sale of loans Gain On Sale Of Loans [Member] Gain On Sale Of Loans [Member] Gain on sale of securities Gain On Sale Of Securities [Member] Gain On Sale Of Securities [Member] Other income Other [Member] Other [Member] Noninterest Income Noninterest Income [Member] Noninterest Income [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Interest and Dividend Income, Operating Interest and Dividend Income, Operating Service charges on deposit accounts Fees and Commissions, Depositor Accounts Other commissions and fees Fees and Commissions, Other Operating Leases, Income Statement, Lease Revenue Operating Leases, Income Statement, Lease Revenue Gain on sale of loans and leases Gain (Loss) on Sale of Loans and Leases Other income Noninterest Income, Other Operating Income Total noninterest income Noninterest Income Revenues Revenues Revenue from Contract with Customer, Excluding Assessed Tax Revenue from Contract with Customer, Excluding Assessed Tax Gain (Loss) on Investments Gain (Loss) on Investments Fair value, assets measured on recurring basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Fair value, assets and liabilities measured on nonrecurring basis, valuation techniques Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block] Fair value, quantitative inputs and assumptions used to determine fair value Fair Value Inputs, Instruments Classified in Shareholders' Equity, Quantitative Information [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] Assets carried at fair value on a nonrecurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Net losses (gains) on nonrecurring assets 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] 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 Amortization of net premiums on securities available-for-sale Accretion (Amortization) of Discounts and Premiums, Investments Amortization of intangible assets Amortization of Intangible Assets Amortization of ROU assets Finance Lease, Right-of-Use Asset, Amortization Provision for credit losses Provision for Loan, Lease, and Other Losses Gain on sale of foreclosed assets 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 Loss on sale of premises and equipment Gain (Loss) on Disposition of Property Plant Equipment Gain on sale of securities Gain (Loss) on Investments, Excluding Other than Temporary Impairments Unrealized loss (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 Decrease in deferred income taxes, net Increase (Decrease) in Income Taxes Decrease in other assets Increase (Decrease) in Other Operating Assets Decrease 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] Net (increase) decrease 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 Proceeds from sales of securities available-for-sale Proceeds from Sale of Available-for-sale Securities Purchases of securities available-for-sale Payments to Acquire Available-for-sale Securities Net 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 Net decrease 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 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 in borrowings Proceeds from (Repayments of) Debt Net decrease in subordinated debentures Early Repayment of Subordinated Debt Common stock repurchased and restricted stock surrendered Restricted stock surrendered Restricted stock surrendered Cash dividends paid 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 increase in cash, cash equivalents, and restricted cash Cash and Cash Equivalents, Period Increase (Decrease) Cash, cash equivalents, and restricted cash, beginning of period Cash and Cash Equivalents, at Carrying Value Cash, cash equivalents, and restricted cash, end of period Supplemental disclosures of cash flow information: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Cash paid for interest Interest Paid Cash paid for income taxes Income Taxes Paid, Net Loans transferred to foreclosed assets Real Estate Owned, Transfer to Real Estate Owned Transfers from loans held for investment to loans held for sale Transfer of Portfolio Loans and Leases to Held-for-sale Goodwill and Intangible Assets Disclosure [Abstract] Finite-lived Intangible Assets [Roll Forward] Finite-lived Intangible Assets [Roll Forward] CDI and CRI Balance, beginning of period Finite-Lived Intangible Assets, Gross Accumulated Amortization, beginning of period Finite-Lived Intangible Assets, Accumulated Amortization Amortization CDI and CRI Balance, end of period Accumulated Amortization, end of period Net CDI and CRI, end of period Finite-Lived Intangible Assets, Net Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Warrant Warrant [Member] 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 Minimum [Member] Maximum Maximum [Member] Weighted Average Weighted Average [Member] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Covered Private Label Collateralized Mortgage Obligations Member [Domain] 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. Private label collateralized mortgage obligations Private Label Collateralized Mortgage Obligations [Member] Private Label Collateralized Mortgage Obligations [Member] Asset-backed Other securities [Member] Other securities [Member] Asset-backed Securities Asset-backed Securities [Member] Fair Value, Measurements, Recurring 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] Voluntary annual prepayment speeds Fair Value Inputs, Prepayment Rate Annual default rates (1) Fair Value Inputs, Probability of Default Loss severity rates (1) Fair Value Inputs, Loss Severity Discount rates Fair Value Inputs, Discount Rate Leases [Abstract] Leases Lessee, Operating Leases [Text Block] Leases Lessor, Operating Leases [Text Block] Other Assets [Abstract] Schedule of Other Assets Schedule of Other Assets [Table Text Block] Intangible assets disclosure Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] 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 Federal Home Loan Bank of San Francisco [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Non‑recourse debt Notes Payable, Other Payables [Member] FHLB secured advances Secured Debt [Member] FHLB unsecured overnight advance Unsecured Debt [Member] AFX borrowings American Financial Exchange [Member] American Financial Exchange [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Amount Non-Recourse Debt Amount Line of Credit, Current Amount Long-term Line of Credit Borrowings Long-term Debt Fair Value Measurement, Policy Fair Value Measurement, Policy [Policy Text Block] Earnings Per Share [Abstract] Net earnings from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Less: Earnings allocated to unvested restricted stock Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Net earnings allocated to common shares Net Income (Loss) Available to Common Stockholders, Basic Weighted-average basic shares and unvested restricted stock outstanding (shares) Weighted Average Number of Shares Issued, Basic Weighted-average unvested restricted stock outstanding (shares) Weighted Average Number of Shares, Restricted Stock Weighted-average basic shares outstanding (shares) Weighted Average Number of Shares Outstanding, Basic Basic net income per share (usd per share) Earnings Per Share, Basic Net earnings from continuing operations allocated to common shares Net Income Loss From Continuing Operation Available To Common Stockholders Basic Net Income Loss From Continuing Operation Available To Common Stockholders Basic Diluted net income per share (usd per share) Earnings Per Share, Diluted Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] PacWest 2003 Stock Incentive Plan PacWest 2003 Stock Incentive Plan [Member] The Company’s 2003 Stock Incentive Plan, or the 2003 Plan, permits stock-based compensation awards to officers, directors, key employees and consultants Restricted Stock Restricted Stock [Member] Restricted Stock Awards And Performance Based Restricted Stock Restricted Stock Awards And Performance Based Restricted Stock [Member] Restricted Stock Awards And Performance Based Restricted Stock [Member] Time-Based Restricted Stock Awards Time-Based Restricted Stock Awards [Member] Time-Based Restricted Stock Awards [Member] Performance Shares Performance Shares [Member] Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Vesting Based On Service Vesting Based On Service [Member] Vesting Based On Service [Member] Performance Target 1 Share-based Compensation Award, Tranche One [Member] Performance Target 2 Share-based Compensation Award, Tranche Two [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of shares authorized (shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Number of shares available for grant (shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Allocated share-based compensation expense Allocated Share-based Compensation Expense Unrecognized share based compensation expense Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Unvested restricted shares (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 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 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 Performance period Share-based Compensation Arrangement by Share-based Payment Award, Performance Period Share-based Compensation Arrangement by Share-based Payment Award, Performance Period Performance vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Direct Financing Lease, Lease Income [Abstract] Direct Financing Lease, Lease Income [Abstract] Interest income on net investments in leases Direct Financing Lease, Interest Income Direct Financing Lease, Net Investment in Leases [Abstract] Direct Financing Lease, Net Investment in Leases [Abstract] Lease payment receivable Direct Financing Lease, Lease Receivable Unguaranteed residual assets Direct Financing Lease, Unguaranteed Residual Asset Deferred fees and other Direct Financing Lease, Deferred Selling Profit And Other Direct Financing Lease, Deferred Selling Profit And Other Aggregate net investment in leases Direct Financing Lease, Net Investment in Lease Sales-type and Direct Financing Leases, Lease Receivable, Rolling Maturity [Abstract] Sales-type and Direct Financing Leases, Lease Receivable, Rolling Maturity [Abstract] 2020 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Next Rolling Twelve Months 2021 Sales-type and Direct Financing Leases, Lease Receivable, Lease Payments to be Received, Rolling Year Two 2022 Sales-type and Direct Financing Leases, Lease Receivable, Lease Payments to be Received, Rolling Year Three 2023 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Rolling Year Four 2024 Sales-type and Direct Financing Leases, Lease Receivable, Lease Payments to be Received, Rolling Year Five Thereafter Sales-type and Direct Financing Leases, Lease Receivable, Lease Payments to be Received, after Rolling Year Five Total undiscounted cash flows Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received Less: Unearned income Sales-type and Direct Financing Leases, Lease Receivable, Undiscounted Excess Amount Present value of lease payments Sales-type and Direct Financing Leases, Lease Receivable Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Impaired Financing Receivable, with Related Allowance, Recorded Investment Impaired Financing Receivable, with Related Allowance, Recorded Investment Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Impaired Financing Receivable, with Related Allowance, Related Allowance Impaired Financing Receivable, Related Allowance Impaired Financing Receivable, with No Related Allowance, Recorded Investment Impaired Financing Receivable, with No Related Allowance, Recorded Investment Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method Total Impaired Loans and Leases Impaired Financing Receivable, Recorded Investment Impaired Financing Receivable, Unpaid Principal Balance Impaired Financing Receivable, Unpaid Principal Balance Impaired Financing Receivable, Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Impaired Financing Receivable, Interest Income, Accrual Method Impaired Financing Receivable, Interest Income, Accrual Method Recently Issued Accounting Standards [Abstract] Recently Issued Accounting Standards [Abstract] Schedule of New Accounting Pronouncements and Changes in Accounting Principles Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Balance, beginning of period Other Real Estate, Foreclosed Assets, and Repossessed Assets Provision for losses Provision for Other Real Estate Owned and Foreclosed Assets Provision for Other Real Estate Owned and Foreclosed Assets Reductions related to sales Sale of Foreclosed Assets Sale of Foreclosed Assets that represents the noncash flow aspect of the sale Balance, end of period Statement [Table] Statement [Table] Class of Financing Receivable [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Domain] Class of Financing Receivable, Type [Domain] Commercial real estate Single-family residence Residential Mortgage [Member] Construction and land development Construction and Land Development [Member] Construction and Land Development [Member] Multi‑family Multifamily [Member] Statement [Line Items] Statement [Line Items] Total other real estate owned, net Other Real Estate Owned Net Other Real Estate Owned Net Other foreclosed assets Other Repossessed Assets Foreclosed assets, net Net income per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Receivables, which are included in Other assets Contract With Customer, Receivable Reclassified to Other Assets Contract With Customer, Receivable Reclassified to Other Assets Contract assets, which are included in Other assets Contract with Customer, Asset, Reclassified to Receivable 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 Government agency and government-sponsored enterprise pass through securities Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Government agency and government-sponsored enterprise collateralized mortgage obligations Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] Municipal securities US States and Political Subdivisions Debt Securities [Member] Government agency and government-sponsored enterprise commercial mortgage-backed securities Commercial Mortgage Backed Securities [Member] US Treasury Securities US Treasury Securities [Member] SBA asset-backed securities SBA asset-backed securities [Member] SBA asset-backed securities [Member] Corporate debt securities Corporate Debt Securities [Member] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Securities available‑for‑sale Available-for-sale Securities Securities available-for-sale, at fair value Securities Available For Sale Including Covered Securities Securities Available For Sale Including Covered Securities Equity warrants Warrants Not Settleable in Cash, Fair Value Disclosure Other derivative assets Derivative Asset, Fair Value of Collateral Fair Value, Estimate Not Practicable, Equity Method Investments Fair Value, Estimate Not Practicable, Equity Method Investments Total recurring assets Assets, Fair Value Disclosure, Recurring Derivative Liability Derivative Liability Derivative liabilities Derivative Liability, Fair Value of Collateral Products and services transferred at a point in time Revenue, Performance Obligation Satisfied At Point In Time Revenue, Performance Obligation Satisfied At Point In Time - Related to transfer now of transfer later of services Products and services transferred over time Product and Services Transferred Over Time Product and Services Transferred Over Time Total revenue from contracts with customers Unobservable Inputs [Axis] Unobservable Inputs [Axis] Unobservable Inputs [Axis] Unobservable Inputs [Domain] Unobservable Inputs [Domain] [Domain] for Unobservable Inputs [Axis] Discount Rates Discount Rates [Member] Discount Rates [Member] No Discounts No Discounts [Member] No Discounts [Member] Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Discounted Cash Flow Discounted Cash Flow [Member] Discounted Cash Flow [Member] Third party appraisals Third party appraisals [Domain] Third party appraisals [Domain] Impaired loans Assets, Fair Value Disclosure, Nonrecurring Investments, Debt and Equity Securities [Abstract] Taxable interest Interest Income, Securities, Operating, Taxable Non-taxable interest Interest Income, Securities, Operating, Tax Exempt Dividend income Investment Income, Dividend Total interest income on investment securities Investment Income, Interest and Dividend Schedule of Occupancy Expense and Supplemental Cash Flow Information Related to Operating Leases Lease, Cost [Table Text Block] Schedule of Supplemental Balance Sheet Information Related to Operating Leases Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Schedule of Maturities of Operating Leases Lessee, Operating Lease, Liability, Maturity [Table Text Block] Schedule of Payments to be Received on Operating Leases Lessor, Operating Lease, Payments to be Received, Maturity [Table Text Block] Amortized Cost Available-for-sale Securities, Amortized Cost Basis [Abstract] Due in one year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis Due after one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis Due after five years through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis Due after ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Total securities available-for-sale Available-for-sale Securities, Amortized Cost Basis Fair Value Due in one year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Due after one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Due after five years through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Due after ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Total securities available-for-sale Restricted Cash [Abstract] Restricted Cash Balances Restrictions on Cash and Cash Equivalents [Table Text Block] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Number of full-service branch offices related to operating leases Lessee, Operating Lease, Number Of Full-Service Branch Offices Lessee, Operating Lease, Number Of Full-Service Branch Offices Number of other offices related to operating leases Lessee, Operating Lease, Number Of Other Offices Lessee, Operating Lease, Number Of Other Offices Remaining lease term Lessee, Operating Lease, Remaining Lease Term Lessee, Operating Lease, Remaining Lease Term Lease renewal term Lessee, Operating Lease, Renewal Term Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Performing Performing Financial Instruments [Member] Nonaccrual Financing Receivable, Recorded Investment, Nonaccrual Status Loans held for investment Earnings Per Share Earnings Per Share [Text Block] Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Balance, beginning of period Balance, beginning of period Loans and Leases Receivable, Allowance, Covered Charge-offs Allowance for Loan and Lease Losses, Write-offs Recoveries Allowance for Loan and Lease Loss, Recovery of Bad Debts Allowance for Loan and Lease Losses, Net charge-offs Allowance for Loan and Lease Losses Write-offs, Net Provision Provision for Loan and Lease Losses Balance, end of period Balance, end of period Amount of the allowance applicable to loans and leases: Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] Individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment 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] Individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment Ending balance of loans and leases 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 Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Unrealized Losses on Securities Available-for-Sale, Less than 12 Months, Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Unrealized Losses on Securities Available-for-Sale, 12 Months or Longer, Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Unrealized Losses on Securities Available-for-Sale, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Unrealized Losses on Securities Available-for-Sale, Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 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] 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 Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] 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, Carrying Amount Investment in FHLB stock, Carrying Amount Federal Home Loan Bank Stock Investment in FHLB stock, Fair Value Investment in Federal Home Loan Bank Stock, Fair Value Disclosure Loans held for sale 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 Loans and leases, net Loans and leases held for investment, net Loans Receivable, Fair Value Disclosure Warrants and Rights Outstanding Warrants and Rights Outstanding Other derivative assets, Carrying Amount Derivative Asset Other derivative assets, Fair Value Demand, interest checking, money market, and savings deposits Deposits, Savings Deposits Interest-bearing Domestic Deposit, Brokered Interest-bearing Domestic Deposit, Brokered Time deposits Time Deposits Time deposits Deposits, Fair Value Disclosure Borrowings Long-term Debt, Fair Value Subordinated debentures Subordinated debentures Subordinated Debt Obligations, Fair Value Disclosure Derivative liabilities Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Available-for-sale Securities, Gross Unrealized Gain Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Available-for-sale Securities, Gross Unrealized Loss Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax 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 Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Intangible asset amortization 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 Operating Lease Liabilities, Payments Due [Abstract] Operating Lease Liabilities, Payments Due [Abstract] 2020 Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months 2021 Lessee, Operating Lease, Liability, Payments, Due Year Two 2022 Lessee, Operating Lease, Liability, Payments, Due Year Three 2023 Lessee, Operating Lease, Liability, Payments, Due Year Four 2024 Lessee, Operating Lease, Liability, Payments, Due Year Five Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total operating lease liabilities Lessee, Operating Lease, Liability, Payments, Due Less: Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Present value of operating lease liabilities Operating Lease, Liability Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Nonaccrual Nonaccrual [Member] Past due loans were no interest is accruing Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Credit Concentration Risk Credit Concentration Risk [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Financing Receivable, Modifications, Subsequent Default, Recorded Investment Financing Receivable, Modifications, Subsequent Default, Recorded Investment Nonaccrual loans and leases Percentage of nonaccrual loans and leases Concentration Risk, Percentage Receivable, 90 or more days past due Receivable, 30-89 days past due Financing receivable, nonaccrual status, current Financing Receivable Recorded Investment Nonaccrual Status Current Financing Receivable Recorded Investment Nonaccrual Status Current 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 Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization Nature of Operations [Text Block] Private Label CMOs Level 3 CMO [Roll Forward] Level 3 CMO [Roll Forward] Level 3 CMO [Roll Forward] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Equity warrants, Balance, beginning of period Total included in earnings Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings Total included in earnings, Equity Warrants Gain on Sale of Investments Total included in other comprehensive income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Sales, Equity Warrants Proceeds from Issuance of Warrants Net settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Net settlements, Equity Warrants Transfers to Available-For-Sale Transfers to Available-For-Sale Fair value transfers of assets measured on a recurring basis Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Equity warrants, Balance, end of period Operating leases: Operating Lease, Assets And Liabilities, Lessee [Abstract] Operating Lease, Assets And Liabilities, Lessee [Abstract] Operating Lease, Right-of-Use Asset Operating Lease, Right-of-Use Asset Operating Lease, Liability Weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Recently Issued Accounting Standards New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Available-for-sale Securities [Member] Available-for-sale Securities [Member] AFS securities pledged as collateral Available For Sale Securities Pledged As Collateral Amortized Cost Available For Sale Securities Pledged As Collateral Amortized Cost Gross realized gains on sale of securities Available-for-sale Securities, Gross Realized Gains Gross realized losses on sale of securities Available-for-sale Securities, Gross Realized Losses Classified Classified [Member] Classified [Member] Special Mention Special Mention [Member] Pass Pass [Member] Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Dividends [Axis] Dividends [Axis] Dividends [Domain] Dividends [Domain] Dividend Declared Dividend Declared [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Dividends declared per share (usd per share) Common Stock, Dividends, Per Share, Declared Loans and Leases Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Other Investment Not Readily Marketable [Table] Other Investment Not Readily Marketable [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] Other Investment Not Readily Marketable [Line Items] Other Investment Not Readily Marketable [Line Items] Equity Investments Without Readily Determinable Fair Value Equity Investments Without Readily Determinable Fair Value Equity Investments Without Readily Determinable Fair Value Equity Investments Without Readily Determinable Fair Value Other than Non-temporary Impairments Equity Investments Without Readily Determinable Fair Value Other than Non-temporary Impairments Equity Investments Without Readily Determinable Fair Value Other than Non-temporary Impairments Equity Method Investment, Amount Sold Equity Investments Without Readily Determinable Fair Value Upward Adjustments Equity Investments Without Readily Determinable Fair Value Upward Adjustments Equity Method Investment, Other than Temporary Impairment Equity Method Investment, Other than Temporary Impairment Contract with Customer, Liability Contract with Customer, Liability Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Entity by Location [Axis] Entity by Location [Axis] Location [Domain] Location [Domain] CALIFORNIA CALIFORNIA NORTH CAROLINA NORTH CAROLINA Business Acquisition [Line Items] Business Acquisition [Line Items] Retail Branch Locations Retail Branch Locations Retail Branch Locations Number of Businesses Acquired Number of Businesses Acquired Cumulative effect of change in accounting principle New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract] Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract] 2020 Lessor, Operating Lease, Payments to be Received, Next Twelve Months 2021 Lessor, Operating Lease, Payments to be Received, Two Years 2022 Lessor, Operating Lease, Payments to be Received, Three Years 2023 Lessor, Operating Lease, Payments to be Received, Four Years 2024 Lessor, Operating Lease, Payments to be Received, Five Years Thereafter Lessor, Operating Lease, Payments to be Received, Thereafter Total undiscounted cash flows Lessor, Operating Lease, Payments to be Received Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Table] Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Table] Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Table] Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items] Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items] [Line Items] for Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Table] Performing Restructured Loans Impaired Financing Receivable Performing Restructured Loans Impaired Financing Receivable Performing Restructured Loans Income Statement [Abstract] Interest income: Interest and Dividend Income, Operating [Abstract] Loans and leases Interest and Fee Income, Loans and Leases Investment securities Interest and Dividend Income, Securities, Operating Deposits in financial institutions Interest Income, Deposits with Financial Institutions Total interest income Interest expense: Interest Expense [Abstract] Deposits Interest Expense, Deposits Borrowings Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-term Subordinated debentures Interest Expense, Subordinated Notes and Debentures Total interest expense Interest Expense Net interest income Interest Income (Expense), Net Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Noninterest income: Noninterest Income [Abstract] Leased equipment income Gain on sale of securities Noninterest expense: Noninterest Expense [Abstract] Compensation Labor and Related Expense Occupancy Occupancy, Net Data processing Information Technology and Data Processing Leased equipment depreciation Lease Equipment Depreciation Lease Equipment Depreciation Other professional services Professional Fees Insurance and assessments Federal Deposit Insurance Corporation Premium Expense Loan expense Loan Expense Loan expenses that include legal fees, collection expenses, credit reports and fees paid to government agencies on recovered assets. Acquisition, integration and reorganization costs Business Combination, Acquisition Related Costs Foreclosed assets expense (income), net Foreclosed Real Estate (Income) Expense Foreclosed Real Estate (Income) Expense Other expense Other Noninterest Expense Total noninterest expense Noninterest Expense Earnings before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Net earnings Earnings per share: Earnings Per Share, Basic and Diluted [Abstract] Net earnings (usd per share) Net earnings (usd per share) Other Assets Other Assets Disclosure [Text Block] Loans and Leases Commitments To Extend Credit Loans and Leases Commitments To Extend Credit Loans and Leases Commitments To Extend Credit Guarantor Obligations, Maximum Exposure, Undiscounted Guarantor Obligations, Maximum Exposure, Undiscounted Commitment To Contribute Capital Commitment To Contribute Capital Commitment To Contribute Capital Remaining minimum amount committed Purchase Commitment, Remaining Minimum Amount Committed Unused Commitments to Extend Credit Unused Commitments to Extend Credit Statement of Financial Position [Abstract] Preferred stock par value (usd per share) Preferred Stock, Par or Stated Value Per Share Preferred stock authorized (shares) Preferred Stock, Shares Authorized Preferred stock issued (shares) Preferred Stock, Shares Issued Preferred stock outstanding (shares) Preferred Stock, Shares Outstanding Common Stock par value (usd per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (shares) Common Stock, Shares Authorized Common stock issued (shares) Common Stock, Shares, Issued Treasury Stock (shares) Treasury Stock, Shares Statement of Stockholders' Equity [Abstract] Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Treasury Stock Treasury Stock [Member] Shares Of Common Stock Shares Of Common Stock [Member] Shares Of Common Stock [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Stockholders' Equity Disclosure [Rollforward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Period Balance Stockholders' Equity Attributable to Parent Shares outstanding, beginning balance (shares) Shares, Outstanding Other comprehensive income - net unrealized gain on securities available-for-sale, net of tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Restricted stock awarded and earned compensation, net of shares forfeited (shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Restricted stock awarded and earned stock compensation, 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 Restricted stock surrendered Restricted Stock Award, Forfeitures Common stock repurchased under Stock Repurchase Program Par Value of Common Stock Repurchased Under Stock Repurchase Program, Amount Par Value of Common Stock Repurchased Under Stock Repurchase Program, Amount Common stock repurchased under Stock Repurchase Program Common Stock Repurchased Under Stock Repurchase Program, Amount Repurchased Common Stock Repurchased Under Stock Repurchase Program, Amount Repurchased Cash dividends paid Dividends, Common Stock, Cash Ending Period Balance Shares outstanding, ending balance (shares) Schedule of available-for-sale securities reconciliation Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Unrealized losses on investment securities Schedule of Unrealized Loss on Investments [Table Text Block] Investments classified by contractual maturity date Investments Classified by Contractual Maturity Date [Table Text Block] Investment income Investment Income [Table Text Block] Borrowings and Subordinated Debentures Debt Disclosure [Text Block] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Maturity Overnight [Member] Maturity Overnight [Member] Class of Financing Receivable, Type of Borrower [Axis] Class of Financing Receivable, Type of Borrower [Axis] Class of Financing Receivable, Type of Borrower [Domain] Class of Financing Receivable, Type of Borrower [Domain] Short-term Debt [Member] Short-term Debt [Member] 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] 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] Federal Reserve Bank Advances Federal Reserve Bank Advances [Member] Unused Lines of Credit Unused lines of Credit [Member] Weighted average remaining maturity period Debt Instruments Weighted Average Remaining Maturity Period Debt Instruments Weighted Average Remaining Maturity Period Borrowing capacity description Line of Credit Facility, Maximum Borrowing Capacity Loans pledged as collateral Loans Pledged as Collateral Current outstanding Amount outstanding Current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Unused commitment fees Debt Instrument, Unused Borrowing Capacity, Fee Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Reserve for Unfunded Loan Commitments, Balance, beginning of period Reserve for Unfunded Loan Commitments Reserve for Unfunded Loan Commitments Allowance for Credit Losses, Balance, beginning of period Financing Receivable, Allowance for Credit Losses Allowance for Loan and Lease Losses, Charge-offs Reserve for Unfunded Loan Commitments, Charge-offs Reserve for Unfunded Loan Commitments, Charge-offs Reserve for Unfunded Loan Commitments, Charge-offs Allowance for Credit Losses, Charge-offs Financing Receivable, Allowance for Credit Losses, Write-downs Allowance for Loan and Lease Loss, Recoveries Reserve for Unfunded Loan Commitments, Recoveries Reserve for Unfunded Loan Commitments, Recoveries Reserve for Unfunded Loan Commitments, Recoveries Allowance for Credit Losses, Recoveries Financing Receivable, Allowance for Credit Losses, Recovery Reserve for Unfunded Loan Commitments, Net charge-offs Reserve for Unfunded Loan Commitments, Net Charge-offs Reserve for Unfunded Loan Commitments, Net Charge-offs 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 Allowance for Loan and Lease Losses, Provision (negative provision) Reserve for Unfunded Commitments, Provision (negative provision) Reserve for Unfunded Commitments, Provision Reserve for Unfunded Commitments, Provision Allowance for Credit Losses, Provision (negative provision) Reserve for Unfunded Loan Commitments, Balance, end of period Allowance for Credit Losses, Balance, end of period Investment Securities Investment [Text Block] Lease, Cost [Abstract] Lease, Cost [Abstract] Fixed costs Operating Lease, Cost Variable costs Variable Lease, Cost Short-term lease costs Short-term Lease, Cost Sublease income Sublease Income Net lease expense Lease, Cost Cash paid for amounts included in the measurement of lease liabilities: Cash Flow, Lessee [Abstract] Cash Flow, Lessee [Abstract] Operating cash flows from operating leases Operating Lease, Payments 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] Operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Fair Value Measurements Fair Value Disclosures [Text Block] 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] 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] CV of loans held for investment by class by performing and nonperforming Financing Receivable Credit Quality Indicators [Table Text Block] 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 credit losses on financing receivables Allowance for Credit Losses on Financing Receivables [Table Text Block] Significant Accounting Policies Significant Accounting Policies [Text Block] Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Reclassifications Reclassification, Policy [Policy Text Block] Subsequent Events Subsequent Events [Text Block] Assets, Fair Value Discount rates, Weighted Average Cash Surrender Value of Life Insurance Cash Surrender Value of Life Insurance Finance Lease, Right-of-Use Asset Finance Lease, Right-of-Use Asset 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 Warrants Equity Warrants Equity Warrants Equity Investments With Readily Determinable Fair Value Equity Investments With Readily Determinable Fair Value Equity Investments With Readily Determinable Fair Value Other Assets, Miscellaneous Other Assets, Miscellaneous Other Assets Other Assets 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] ASSETS: Assets [Abstract] Total cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Federal Home Loan Bank stock, at cost Total investment securities Investments Allowance for loan and lease losses Equipment leased to others under operating leases Equipment Leased To Others Under Operating Leases Equipment Leased To Others Under Operating Leases Premises and equipment, net Property, Plant and Equipment, Net Foreclosed assets, net Deferred tax asset, net Deferred Tax Assets, Net Goodwill Goodwill Core deposit and customer relationship intangibles, net Finite Lived Core Deposits Customer Relations Net Finite Lived Core Deposits Customer Relations Net Other assets Total assets Assets LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Noninterest-bearing deposits Noninterest-bearing Deposit Liabilities Interest-bearing deposits Interest-bearing Deposit Liabilities Total deposits Deposits Accrued interest payable and other liabilities Accrued Liabilities and Other Liabilities Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Preferred stock ($0.01 par value; 5,000,000 shares authorized; none issued and outstanding) Preferred Stock, Value, Issued Common stock ($0.01 par value, 200,000,000 shares authorized at March 31, 2019 and December 31, 2018; 122,204,565 and 125,079,705 shares issued, respectively, including 1,241,543 and 1,888,872 shares of unvested restricted stock, respectively) Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Treasury stock, at cost (2,003,416 and 1,889,872 shares at March 31, 2019 and December 31, 2018) Treasury Stock, Value Accumulated other comprehensive income (loss), net Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders' equity Total liabilities and stockholders' equity Liabilities and Equity