Disclosure of Compensation Related Costs, Share-based Payments [Abstract] 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] Stock option awards Employee Stock Option [Member] Restricted stock awards and restricted stock units Restricted Stock And Restricted Stock Units [Member] Restricted Stock and Restricted Stock Units [Member] Stock appreciation rights Stock Appreciation Rights (SARs) [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Total stock-based compensation expense Allocated Share-based Compensation Expense Related tax benefits Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Axis] Related Party Transaction [Axis] Related Party Transaction [Domain] Related Party Transaction [Domain] Special Committee Investigation Special Committee Investigation Indemnification [Member] Special Committee Investigation Indemnification [Member] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Officers and Directors Management [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Loans to certain officers and directors and their related interests Loans and Leases Receivable, Related Parties Deposits from principal officers, directors, and their related interests Related Party Deposit Liabilities Receivables [Abstract] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Consumer Consumer Portfolio Segment [Member] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] NTM Loans Loans And Finance Receivables, Non-Traditional Mortgages [Member] Loans And Finance Receivables, Non-Traditional Mortgages [Member] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Green Loans Green Loans [Member] Green Loans [Member] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Axis] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Axis] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Domain] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Domain] First lien First Mortgage [Member] Credit Score, FICO [Axis] Credit Score, FICO [Axis] Credit Score, FICO [Domain] Credit Score, FICO [Domain] Greater than 800 FICO Score, Greater than Eight Hundred [Member] FICO Score, Greater than Eight Hundred 700-799 FICO Score, Seven Hundred to Seven Hundred Ninety Nine [Member] FICO Score, Seven Hundred to Seven Hundred Ninety Nine 600-699 FICO Score, 600 to 699 [Member] Less than 600 FICO Score, Less than Six Hundred [Member] FICO Score, Less than Six Hundred No FICO No FICO Score Available [Member] No FICO Score Available Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Loan Portfolio Concentration Risk Loan Portfolio Concentration Risk [Member] Loan Portfolio Concentration Risk [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio [Member] Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Count SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Number of Loans Total loans and leases (1) Loans and Leases Receivable, Net of Deferred Income Percentage to total loans and leases Concentration Risk, Percentage Count Change Loans and Leases Receivable, Increase (Decrease) in Number of Loans Loans and Leases Receivable, Increase (Decrease) in Number of Loans Increase (decrease) in loans receivable Loans and Leases Receivable, Net Of Deferred Income, Increase (Decrease) in Period Loans and Leases Receivable, Net Of Deferred Income, Increase (Decrease) in Period Increase (decrease) in loans receivable, percentage Loans and Leases Receivable, Net Of Deferred Income, Percentage Increase (Decrease) in Period Loans and Leases Receivable, Net Of Deferred Income, Percentage Increase (Decrease) in Period Investments, Debt and Equity Securities [Abstract] Summary of Amortized Cost and Fair Value of Investment Securities Marketable Securities [Table Text Block] Proceeds from Sales and Calls of Securities and Associated Gross Gains and Losses Schedule of Realized Gain (Loss) [Table Text Block] Summary of Investment Securities with Unrealized Losses Schedule of Unrealized Loss on Investments [Table Text Block] Composition, Repricing and Yield Information of Investment Securities Debt Securities, Available-for-sale [Table Text Block] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Los Angeles Football Club (LAFC) Los Angeles Football Club (LAFC) [Member] Los Angeles Football Club (LAFC) [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Corporate Credit Card Corporate Credit Card [Member] Corporate Credit Card [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Line of Credit Line of Credit [Member] Standby Letters of Credit Standby Letters of Credit [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Stadco Loan LAFC Stadium Co, LLC [Member] LAFC Stadium Co, LLC [Member] Team Loan LAFC Sports LLC [Member] LAFC Sports LLC [Member] Various Entities Affiliated With LAFC Various Entities Affiliated With LAFC [Member] Various Entities Affiliated With LAFC [Member] Immediate Family Member of Chief Executive Officer, Brother Immediate Family Member of Chief Executive Officer, Brother [Member] Immediate Family Member of Chief Executive Officer, Brother [Member] Affiliated Entity Affiliated Entity [Member] Los Angeles Football Club (LAFC) Naming Rights, Revenue Rights, And Other Sponsorship Rights Los Angeles Football Club (LAFC) Naming Rights, Revenue Rights, And Other Sponsorship Rights [Member] Los Angeles Football Club (LAFC) Naming Rights, Revenue Rights, And Other Sponsorship Rights [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Expected Scenario, Forecast [Member] Prepaid recognized as prepaid asset Prepaid Commitment, Related Party Transaction Prepaid Commitment, Related Party Transaction Committed line of credit Committed line of credit, maximum borrowing Loans And Leases Receivable, Maximum Borrowing Capacity, Related Party Loans And Leases Receivable, Maximum Borrowing Capacity, Related Party Outstanding advances Loans And Leases Receivable, Outstanding Advances, Related Party Loans And Leases Receivable, Outstanding Advances, Related Party Largest amount of principal outstanding Loans And Leases Receivable, Maximum Amount Outstanding During Period, Related Party Loans And Leases Receivable, Maximum Amount Outstanding During Period, Related Party Unused loan fees Revenue from Related Parties Interest income Interest Income, Related Party Amount of available line of credit Line of Credit Facility, Maximum Borrowing Capacity Letters of credit Letters of Credit Outstanding, Amount Term of naming and sponsorship agreement Related Party Transaction, Term Of Contract Related Party Transaction, Term Of Contract Renewal term of the naming and sponsorship agreement Related Party Transaction, Renewal Term Of Contract Related Party Transaction, Renewal Term Of Contract Future annual payments for naming rights, revenue rights and other sponsorship rights Related Party Transaction, Amounts of Transaction Maximum commitment Related Party Transaction, Maximum Commitment Related Party Transaction, Maximum Commitment Expenses from transactions with related parties Related Party Transaction, Expenses from Transactions with Related Party Deposits Deposits Banking and Thrift [Abstract] Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Weighted Average Weighted Average [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 Federal Home Loan Bank of San Francisco [Member] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Securities Pledged as Collateral Collateralized Debt Obligations [Member] Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] Fixed bank advances Federal Home Loan Bank, Advances, Maturities Summary, Fixed Rate Company advances weighted average interest rate Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End Variable bank advances Federal Home Loan Bank, Advances, Maturities Summary, Floating Rate FHLB variable-rate, weighted average interest rate Federal Home Loan Bank, Advances, General Debt Obligations, Disclosure, Weighted Average Interest Rate, Variable Federal Home Loan Bank, Advances, General Debt Obligations, Disclosure, Weighted Average Interest Rate, Variable Advances from FHLB collateralized Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged FHLB stock Federal Home Loan Bank Stock Amount of additional available borrowing Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds Line of Credit Facility [Table] Line of Credit Facility [Table] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Unsecured Federal Funds Line of Credit Unsecured Federal Funds Line of Credit [Member] Unsecured Federal Funds Line of Credit [Member] Line Of Credit Facility Maturing April 18, 2017 Line Of Credit Facility Maturing April 18, 2017 [Member] Line Of Credit Facility Maturing April 18, 2017 [Member] Line of Credit Facility Maturing March 28, 2016 Line of Credit Facility Maturing March 28, 2016 [Member] Line of Credit Facility Maturing March 28, 2016 [Member] Lender Name [Axis] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Federal Reserve Bank Advances Federal Reserve Bank Advances [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Amount of available line of credit with Federal Reserve Bank Collateral on line of credit facility Debt Instrument, Collateral Amount Other borrowings Long-term Line of Credit Securities sold under repurchase agreements Securities Sold under Agreements to Repurchase Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Repayments of lines of credit Repayments of Lines of Credit Equity [Abstract] SHAREHOLDERS' EQUITY Stockholders' Equity Note Disclosure [Text Block] Transfers and Servicing [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [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] Fair value of retained MSRs Servicing Asset at Fair Value, Amount Discount rate Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Discount Rate Constant prepayment rate Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Prepayment Speed Weighted-average life Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Weighted Average Life Statement of Stockholders' Equity [Abstract] Dividends declared, per common share (in usd per share) Common Stock, Dividends, Per Share, Declared Discontinued Operations and Disposal Groups [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Business Acquisition [Line Items] Business Acquisition [Line Items] Liabilities of discontinued operations Disposal Group, Including Discontinued Operation, Liabilities Gain on sale of branches Gain (Loss) on Disposition of Business Proceeds from sale of loans held-for-sale/held-for-investment Proceeds from Sale of Loans Held-for-investment Net gain on sale of loans Gain (Loss) on Sales of Loans, Net Mortgage Banking Activities [Abstract] Mortgage Banking Activities [Abstract] RESERVE FOR LOSS ON REPURCHASED LOANS Mortgage Banking Activities Disclosure [Text Block] Mortgage Banking Activities Disclosure Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Variable Interest Entities [Axis] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Class of Stock [Line Items] Class of Stock [Line Items] Shares sold during the period (in shares) Stock Employee Compensation Trust, Shares Contributed Stock Employee Compensation Trust, Shares Contributed Price per share sold to trust (in usd per share) Stock Employee Compensation Trust, Shares Contributed, Price Per Share Stock Employee Compensation Trust, Shares Contributed, Price Per Share Proceeds from sale of equity Stock Employee Compensation Trust, Value Of Shares Contributed Stock Employee Compensation Trust, Value Of Shares Contributed Number of shares repurchased (in shares) Stock Employee Compensation Trust, Shares Repurchased Stock Employee Compensation Trust, Shares Repurchased Share price of share repurchased (in dollars per share) Stock Employee Compensation Trust, Shares Repurchased, Price Per Share Stock Employee Compensation Trust, Shares Repurchased, Price Per Share Value of shares repurchased Stock Employee Compensation Trust, Value Of Shares Repurchased Stock Employee Compensation Trust, Value Of Shares Repurchased Proceeds used for funding benefit plan obligations Stock Employee Compensation Trust, Proceeds From Termination, Portion Used To Fund Benefit Plan Obligations Stock Employee Compensation Trust, Proceeds From Termination, Portion Used To Fund Benefit Plan Obligations Voting common stock allocated to funding benefit plan obligations (in shares) Stock Employee Compensation Trust, Trust Termination, Common Stock Allocated To Funding Benefit Plan Obligations Stock Employee Compensation Trust, Trust Termination, Common Stock Allocated To Funding Benefit Plan Obligations Portion of termination proceeds used to satisfy and terminate promissory note obligations Stock Employee Compensation Trust, Proceeds From Termination, Portion Used To Satisfy And Terminate Promissory Note Obligations Stock Employee Compensation Trust, Proceeds From Termination, Portion Used To Satisfy And Terminate Promissory Note Obligations Outstanding principal balance including accrued interest Stock Employee Compensation Trust, Promissory Note, Outstanding Principal Balance Including Accrued Interest Stock Employee Compensation Trust, Promissory Note, Outstanding Principal Balance Including Accrued Interest Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Disposal Group, Disposed of by Sale, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] Commercial Equipment Finance Commercial Equipment Finance Division [Member] Commercial Equipment Finance Division [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Equipment leases disposed of Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net Additional leases transferred during the period Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net, Additional Amount Transferred During The Period Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net, Additional Amount Transferred During The Period Gain on sale of business unit Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Deposits [Abstract] Components of Interest Bearing Deposits Schedule of Interest Bearing Deposits [Table Text Block] Schedule of Interest Bearing Deposits [Table Text Block] Schedule of Brokered Deposits Schedule of Brokered Deposits [Table Text Block] Schedule of Brokered Deposits [Table Text Block] Scheduled Maturities of Time Deposits Schedule Of Maturities Of Time Deposits Table [Table Text Block] Schedule of Maturities of Time Deposits Commitments and Contingencies Disclosure [Abstract] Contractual Amount of Financial Instruments with Off-Balance-Sheet Risk Schedule of Off-Balance Sheet Risk Commitments [Table Text Block] Schedule of Off-Balance Sheet Risk Commitments Accounting Policies [Abstract] Number of reportable segments Number of Reportable Segments Preferred Stock Preferred Stock [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Series C 8.00% non-cumulative perpetual Series C Preferred Stock [Member] Series D 7.375% non-cumulative perpetual Series D Preferred Stock [Member] Series E 7.00% non-cumulative perpetual Series E Preferred Stock [Member] Non cumulative preferred stock, dividend rate Preferred Stock, Dividend Rate, Percentage Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Liquidation Preference Preferred Stock, Liquidation Preference, Value Carrying Value Preferred Stock, Value, Issued Loan Purchase Commitments Loan Purchase Commitments [Member] Limited Liability Company Controlled By Affiliate Of Greater Than 5% Shareholder, Oaktree Limited Liability Company Controlled By Affiliate Of Greater Than 5% Shareholder, Oaktree [Member] Limited Liability Company Controlled By Affiliate Of Greater Than 5% Shareholder, Oaktree [Member] Committed revolving repurchase facility Transfers Accounted for as Secured Borrowings, Assets, Carrying Amount Largest aggregate amount of principal outstanding during period Principal Amount Outstanding Of Revolving Loan Facility, Maximum Amount Outstanding During Period Principal Amount Outstanding Of Revolving Loan Facility, Maximum Amount Outstanding During Period Amount outstanding Principal Amount Outstanding Of Revolving Loan Facility Principal Amount Outstanding Of Revolving Loan Facility Proceeds from principal Proceeds from Principal Repayments on Loans and Leases Held-for-investment Proceeds from interest Proceeds from Interest Payments on Loans and Leases Held-for-investment Proceeds from Interest Payments on Loans and Leases Held-for-investment Fair Value Disclosures [Abstract] Operating Activities [Axis] Operating Activities [Axis] Operating Activities [Domain] Operating Activities [Domain] Continuing Operations Continuing Operations [Member] Discontinued Operations Discontinued Operations [Member] Fair Value Fair Value, Option, Loans Held as Assets [Abstract] Total loans Fair Value, Option, Loans Held as Assets, Loans Held-For-Sale, Total Fair Value, Option, Loans Held as Assets, Loans Held-For-Sale, Total Non-accrual loans Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status Loans past due 90 days or more and still accruing Fair Value, Option, Loans Held as Assets, 90 Days or More Past Due Unpaid Principal Balance Fair Value, Option, Loans Held as Assets, Aggregate Unpaid Principal Balance [Abstract] Fair Value, Option, Loans Held as Assets, Aggregate Unpaid Principal Balance [Abstract] Total loans Fair Value, Option, Loans Held As Assets, Loans Held-For-Sale, Total, Aggregated Unpaid Principal Balance Fair Value, Option, Loans Held As Assets, Loans Held-For-Sale, Total, Aggregated Unpaid Principal Balance Non-accrual loans Fair Value, Option, Loans Held As Assets, Aggregate Amount In Nonaccrual Status, Aggregated Unpaid Principal Balance Fair Value, Option, Loans Held As Assets, Aggregate Amount In Nonaccrual Status, Aggregated Unpaid Principal Balance Loans past due 90 days or more and still accruing Fair Value, Option, Loans Held As Assets, 90 Days Or More Past Due, Aggregated Unpaid Principal Balance Fair Value, Option, Loans Held As Assets, 90 Days Or More Past Due, Aggregated Unpaid Principal Balance Difference Fair Value, Option, Loans Held as Assets, Aggregate Difference [Abstract] Total loans Fair Value, Option, Loans Held As Assets, Loans Held-For-Sale, Total, Aggregated Difference Fair Value, Option, Loans Held As Assets, Loans Held-For-Sale, Total, Aggregated Difference Non-accrual loans Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status, Aggregated Difference Loans past due 90 days or more and still accruing Fair Value, Option, Loans Held as Assets, 90 Days or More Past Due, Aggregate Difference Non-accrual loans, guaranteed by US government Fair Value, Option, Loans Held as Assets, Aggregate Amount Guaranteed in Nonaccrual Status Fair Value, Option, Loans Held as Assets, Aggregate Amount Guaranteed in Nonaccrual Status Net gain (loss) on sale of loans (continuing operations) Fair Value, Option, Changes in Fair Value, Gain (Loss) Organization, Consolidation and Presentation of Financial Statements [Abstract] Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Variable Interest Entity, Not Primary Beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other Assets Other Assets [Member] Investment [Axis] Investment [Axis] Investment [Domain] Investment [Domain] Affordable Housing Fund Investment Affordable Housing Fund Investment [Member] Affordable Housing Fund Investment [Member] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Funded commitments Payments To Acquire Cost Method Investments Payments To Acquire Cost Method Investments Loss on investments in alternative energy partnerships, net Income (Loss) from Equity Method Investments Total unconsolidated assets Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets Aggregate funding commitment Variable Interest Entity, Funding Investment Commitment Variable Interest Entity, Funding Investment Commitment Total amount funded Variable Interest Entity, Funding Investment Commitment, Amount Funded Variable Interest Entity, Funding Investment Commitment, Amount Funded Amounts not used and therefore returned Variable Interest Entity, Funding Investment Commitment, Amount Unused And Refunded Variable Interest Entity, Funding Investment Commitment, Amount Unused And Refunded Amount of funding canceled Variable Interest Entity, Funding Investment Commitment, Amount Canceled Variable Interest Entity, Funding Investment Commitment, Amount Canceled Investment tax credit Effective Income Tax Rate Reconciliation, Tax Credit, Investment, Amount Maximum loss exposure Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Unfunded commitments Alternative Investments, Unfunded Investment Commitments Alternative Investments, Unfunded Investment Commitments Payments of capital lease obligations Payments to Acquire Equity Method Investments Investment amortization Amortization Method Qualified Affordable Housing Project Investments, Amortization Loss Contingencies [Table] Loss Contingencies [Table] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Shareholder Derivative Action Shareholder Derivative Action [Member] Shareholder Derivative Action [Member] Jeffrey Seabold Matter Jeffrey Seabold Matter [Member] Jeffrey Seabold Matter [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Accrued litigation expense Estimated Litigation Liability Number of defendants Loss Contingency, Number of Defendants Damages sought Loss Contingency, Damages Sought, Value Quarterly Financial Information Disclosure [Abstract] QUARTERLY RESULTS OF OPERATIONS (UNAUDITED) Quarterly Financial Information [Text Block] Mortgage servicing rights, at fair value SBA servicing rights, at cost Servicing Asset at Amortized Cost Total Servicing Asset Unrecognized Expense Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Weighted-Average Remaining Expected Recognition Period Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Property, Plant and Equipment [Abstract] Commitments under operating leases Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2019 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2020 Operating Leases, Future Minimum Payments, Due in Two Years 2021 Operating Leases, Future Minimum Payments, Due in Three Years 2022 Operating Leases, Future Minimum Payments, Due in Four Years 2023 Operating Leases, Future Minimum Payments, Due in Five Years 2024 and After Operating Leases, Future Minimum Payments Due In Year Five and Thereafter Operating Leases, Future Minimum Payments Due In Year Five and Thereafter Total Operating Leases, Future Minimum Payments Due Commitments under capital lease Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2019 Capital Leases, Future Minimum Payments Due, Next Twelve Months 2020 Capital Leases, Future Minimum Payments Due in Two Years 2021 Capital Leases, Future Minimum Payments Due in Three Years 2022 Capital Leases, Future Minimum Payments Due in Four Years 2023 Capital Leases, Future Minimum Payments Due in Five Years 2024 and After Capital Leases, Future Minimum Payments Due In Year Five and Thereafter Capital Leases, Future Minimum Payments Due In Year Five and Thereafter Total Capital Leases, Future Minimum Payments Due Commitments under operating leases and capital leases Capital and Operating Leases, Future Minimum Payments Due, Fiscal year Maturity [Abstract] Capital and Operating Leases, Future Minimum Payments Due, Fiscal year Maturity [Abstract] 2019 Capital and Operating Leases, Future Minimum Payments Due, Next Twelve Months Capital and Operating Leases, Future Minimum Payments Due, Next Twelve Months 2020 Capital and Operating Leases, Future Minimum Payments Due, Due in Two Years Capital and Operating Leases, Future Minimum Payments Due, Due in Two Years 2021 Capital and Operating Leases, Future Minimum Payments Due, Due in Three Years Capital and Operating Leases, Future Minimum Payments Due, Due in Three Years 2022 Capital and Operating Leases, Future Minimum Payments Due, Due of Four Years Capital and Operating Leases, Future Minimum Payments Due, Due of Four Years 2023 Capital and Operating Leases, Future Minimum Payments Due, Due in Five Years Capital and Operating Leases, Future Minimum Payments Due, Due in Five Years 2024 and After Capital and Operating Leases, Future Minimum Payments Due In Year Five and Thereafter Capital and Operating Leases, Future Minimum Payments Due In Year Five and Thereafter Total Capital and Operating Leases, Future Minimum Payments Due Capital and Operating Leases, Future Minimum Payments Due Real Estate Owned, Disclosure of Detailed Components [Abstract] Schedule of Real Estate Owned Schedule of Real Estate Owned [Table Text Block] Schedule of Real Estate Owned [Table Text Block] Activities in Other Real Estate Owned Valuation Allowance Real Estate Owned Valuation Allowance [Table Text Block] Tabular disclosure of the change in the valuation allowance for other real estate owned. Expenses Related to Foreclosed Assets Included in Loan Servicing and Foreclosure Expenses Expenses Related To Foreclosed Assets Included In Loan Servicing And Foreclosure Expenses Table [Table Text Block] Expenses related to foreclosed assets included in loan servicing and foreclosure expenses. Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Subsidiaries Subsidiaries [Member] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Corporate debt securities Corporate Bond Securities [Member] Collateral [Axis] Collateral [Axis] Collateral [Domain] Collateral [Domain] Collateral Collateral Pledged [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Held-to maturity securities transferred Debt Securities, Held-to-maturity, Transfer, Amount Unrealized gain arising from the reclassification of securities held-to-maturity to securities available-for-sale Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, before Tax Proceeds from sales of securities available-for-sale Proceeds from Sale of Debt Securities, Available-for-sale Other than temporary impairment losses Other than Temporary Impairment Losses, Investments Securities available-for-sale, pledged Debt Securities, Available-for-sale, Restricted Securities available-for-sale portfolio Number Of Available For Sale Securities In Portfolio Number of available for sale securities in portfolio. Securities in unrealized loss position Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions Premium on loans and leases purchased Financing Receivable, Significant Purchases, Premium Financing Receivable, Significant Purchases, Premium 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] Subsequent Event [Line Items] Subsequent Event [Line Items] Derivative Instruments and Hedging Activities Disclosure [Abstract] DERIVATIVE INSTRUMENTS Derivative Instruments and Hedging Activities Disclosure [Text Block] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Representations and Warranties Obligations and Corporate Guarantees Representations and Warranties Obligations and Corporate Guarantees [Member] Representations and Warranties Obligations and Corporate Guarantees [Member] Representations and Warranties Obligations and Corporate Guarantees, Portfolio Run-Off And Repurchase Settlement Activities Representations and Warranties Obligations and Corporate Guarantees, Portfolio Run-Off And Repurchase Settlement Activities [Member] Representations and Warranties Obligations and Corporate Guarantees, Portfolio Run-Off And Repurchase Settlement Activities [Member] Decrease in reserve for loss on repurchased loans Loss Contingency Accrual, Period Increase (Decrease) Condensed Financial Information Disclosure [Abstract] Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Banc of California, Inc. Parent Company [Member] Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] ASSETS Assets [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value FHLB and other bank stock Federal Home Loan Bank Stock and Other Bank Stock Federal Home Loan Bank Stock and Other Bank Stock Loans and leases receivable Loans and Leases Receivable, Net Amount Investments in alternative energy partnerships, net Equity Method Investments Other assets Other Assets Investment in subsidiaries Investment in Subsidiaries Investment in Subsidiaries Total Assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Other borrowings, net Long-term debt, net Notes Payable Accrued expenses and other liabilities Accrued Liabilities and Other Liabilities Stockholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders’ equity Liabilities and Equity Junior Subordinated Debt Junior Subordinated Debt [Member] 7.50% Amortizing Note Due May 15, 2017 Seven Point Five Percent Amortizing Note Due May 15, 2017 [Member] Seven Point Five Percent Amortizing Note Due May 15, 2017 [Member] Tangible equity units issued during period, shares Tangible Equity Units, Issued, Shares Tangible Equity Units, Issued, Shares Tangible equity units issued to underwriter during period, shares Tangible Equity Units, Issued, Underwriter Overallotment Option Tangible Equity Units, Issued, Underwriter Overallotment Option Proceeds from issuance of tangible equity units, net of issuance costs Proceeds From Issuance Of Tangible Equity Units Net Of Issuance Costs Proceeds from Issuance of Tangible Equity Units, Net of Issuance Costs Fair value of debt instrument Debt Instrument, Fair Value Disclosure Adjustments to additional paid in capital, issuance of tangible equity units Adjustments to Additional Paid in Capital, Tangible Equity Units Issued, Value Adjustments to Additional Paid in Capital, Tangible Equity Units Issued, Value Tangible equity units issued, issuance costs Payment of Tangible Units Issued, Issuance Costs Payment of Tangible Units Issued, Issuance Costs Debt instrument, deferred finance cost Payment of Tangible Units Issued, Issuance Costs, Allocated to Debt Payment of Tangible Units Issued, Issuance Costs, Allocated to Debt Adjustments to additional paid in capital, tangible equity units issued, issuance costs Payment of Tangible Units Issued, Issuance Costs, Allocated to Equity Payment of Tangible Units Issued, Issuance Costs, Allocated to Equity Minimum settlement rate Share-based Compensation Arrangement by Share-based Payment Award, Purchase Contract, Settlement Rate, Minimum Settlement Rate Share-based Compensation Arrangement by Share-based Payment Award, Purchase Contract, Settlement Rate, Minimum Settlement Rate Market value greater or equal to (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Purchase Contract, Minimum Settlement Rate, Minimum Market Value Per Share Share-based Compensation Arrangement by Share-based Payment Award, Purchase Contract, Minimum Settlement Rate, Minimum Market Value Per Share Maximum settlement rate Share-based Compensation Arrangement by Share-based Payment Award, Purchase Contract, Settlement Rate, Maximum Settlement Rate Share-based Compensation Arrangement by Share-based Payment Award, Purchase Contract, Settlement Rate, Maximum Settlement Rate Market value less than or equal to (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Purchase Contract, Maximum Settlement Rate, Maximum Market Value Per Share Share-based Compensation Arrangement by Share-based Payment Award, Purchase Contract, Maximum Settlement Rate, Maximum Market Value Per Share Issuance of shares of voting common stock (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Income Statement [Abstract] Statement [Table] 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Reversal of provision for loan repurchases Provision for Loan Repurchases, Initial Estimate of Loss Provision charged for the period based on estimated losses for sold loans that may have to be subsequently repurchased and amounts that may have to be paid to reimburse certain investor losses due to defects that occurred in the origination of the loans. 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Common Capital Required to be Well Capitalized to Risk Weighted Assets Tier One Risk Based Common Capital Required to be Well Capitalized to Risk Weighted Assets Tier 1 leverage Tier One Leverage Capital [Abstract] Tier 1 leverage ratio, actual amount Tier One Leverage Capital Tier 1 leverage ratio, actual ratio Tier One Leverage Capital to Average Assets Tier 1 leverage ratio, minimum capital requirements amount Tier One Leverage Capital Required for Capital Adequacy Tier 1 leverage ratio, minimum capital requirements ratio Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier 1 leverage ratio, minimum required to be well capitalized under prompt corrective action provisions amount Tier One Leverage Capital Required to be Well Capitalized Tier 1 leverage ratio, minimum required to be well capitalized under prompt corrective action provisions ratio Tier One Leverage Capital Required to be Well Capitalized to Average Assets SERVICING RIGHTS Transfers and Servicing of Financial Assets [Text Block] Granted date fair value of options granted Share Based Compensation Arrangement By Share Based Payment Award, Options, Grants In Period, Fair Value Share Based Compensation Arrangement By Share Based Payment Award, Options, Grants In Period, Fair Value Fair value of options vested Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value Total intrinsic value of options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Cash received from options exercised Proceeds from Stock Options Exercised Weighted-average estimated fair value per share of options granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Delinquency period Financing Receivable, Days Delinquent, Classified as Credit Risk Number of days delinquent at which a loan or lease is individually analyzed. Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Class of Financing Receivable [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable, Type [Domain] SBA Commercial Small Business Administration Receivable [Member] Commercial Small Business Administration Receivable Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Percentage of credit enhancement for loans up to $150,000 Loans and Leases Receivable, Percentage of Credit Enhancement For Loans Up To $150,000 Loans and Leases Receivable, Percentage of Credit Enhancement For Loans Up To $150,000 Percentage of credit enhancement for loans greater than $150,000 Loans and Leases Receivable, Percentage of Credit Enhancement for Loans Greater than $150,000 Loans and Leases Receivable, Percentage of Credit Enhancement for Loans Greater than $150,000 Retirement Benefits [Abstract] Schedule of Employee Stock Ownership Plan (ESOP) Disclosures [Table] Schedule of Employee Stock Ownership Plan (ESOP) Disclosures [Table] Restricted Stock Restricted Stock [Member] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2013 Omnibus Stock Incentive Plan 2013 Omnibus Stock Incentive Plan [Member] 2013 Omnibus Stock Incentive Plan [Member] Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] Employee contribution on compensation, maximum Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Employer contribution match on compensation Defined Contribution Plan, Employer Matching Contribution, Percent of Match Percentage of employees' annual contribution, eligible for employers match Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 401(k) plan expense Defined Contribution Plan, Cost Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Restricted stock awards issued under Employee Equity Ownership Plan Stock Issued During Period, Shares, Restricted Stock Award, Gross Unvested restricted stock awards (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Unrecognized stock-based compensation expense Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Schedule Of Deposits [Table] Schedule Of Deposits [Table] Schedule Of Deposits [Table] California State Treasurer California State Treasurer [Member] California State Treasurer [Member] Other Public Entities Other Public Entities [Member] Other Public Entities [Member] Schedule Of Deposits [Line Items] Schedule Of Deposits [Line Items] [Line Items] for Schedule Of Deposits [Table] Deposit reclassified as loans Deposit Liabilities Reclassified as Loans Receivable Securities pledged as collateral Pledged Assets Separately Reported, Securities Pledged as Collateral, at Fair Value Total brokered deposits Interest-bearing Domestic Deposit, Brokered Caliber Caliber Home Loans, Inc. [Member] Caliber Home Loans, Inc. 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Total Profit (Loss) from Real Estate Operations INVESTMENT SECURITIES Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Net cash provided by (used in) operating activities Cash Provided by (Used in) Operating Activities, Discontinued Operations Net cash provided by investing activities Cash Provided by (Used in) Investing Activities, Discontinued Operations Net cash provided by (used in) discontinued operations Net Cash Provided by (Used in) Discontinued Operations Earnings Per Share [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Restricted Stock Units Restricted Stock Units (RSUs) [Member] Stock Option Equity Option [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Stock excluded from computation of earnings per share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Income Tax Disclosure [Abstract] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Beginning balance Unrecognized Tax Benefits Increase related to prior year tax positions Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Increase in current year tax positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Ending balance Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Commercial Commercial Portfolio Segment [Member] Consumer Commercial and industrial Commercial and Industrial Receivable [Member] Commercial and industrial. Commercial real estate Real Estate Loan [Member] Multifamily Commercial Multi Family Receivable [Member] Commercial Multi Family Receivable Construction Construction Loans [Member] Single family residential mortgage Consumer Single Family Residential Mortgage Receivable [Member] Consumer Single Family Residential Mortgage Receivable Other consumer Other Consumer Loans Receivable [Member] Other Consumer Loans Receivable [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Transfers from Held-For-Sale Financing Receivable, Reclassification From Held-for-sale Financing Receivable, Reclassification From Held-for-sale Transfers to Held-For-Sale Financing Receivable, Reclassification to Held-for-sale 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 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[Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Banco Popular North America (BPNA) Banco Popular North America [Member] Banco Popular North America [Member] Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Ownership percentage Related Party Transaction, Company Ownership Percentage Related Party Transaction, Company Ownership Percentage Number of branches Business Combination, Number of Branches Business Combination, Number of Branches Common stock issuable (in shares) Related Party Transaction, Securities Purchase Agreement, Common Stock Issuable Related Party Transaction, Securities Purchase Agreement, Common Stock Issuable Price per share issuable (in dollars per share) Related Party Transaction, Securities Purchase Agreement, Price Per Share Issuable Related Party Transaction, Securities Purchase Agreement, Price Per Share Issuable Aggregate purchase price 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an allowance recorded Impaired Financing Receivable, with Related Allowance, Recorded Investment Total Impaired Financing Receivable, Recorded Investment Allowance for Loan and Lease Losses Impaired Financing Receivable, Related Allowance Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Interest Income Recognized Impaired Financing Receivable, Interest Income, Accrual Method Cash Basis Interest Recognized Impaired Financing Receivable, Interest Income, Cash Basis Method Schedule of Federal Home Loan Banks Fiscal Year Maturity Schedule of Federal Home Loan Banks Fiscal Year Maturity [Table Text Block] Schedule of Federal Home Loan Banks Fiscal Year Maturity [Table Text Block] Schedule of Federal Home Loan Bank Advances, Financial Data Schedule of Federal Home Loan Bank Advances, Financial Data [Table Text Block] Schedule of Federal Home Loan Bank Advances, Financial Data [Table Text Block] EARNINGS PER COMMON SHARE Earnings Per Share [Text Block] Unaudited Quarterly Results of Operations Quarterly Financial Information [Table Text Block] Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Senior Notes Senior Notes [Member] 5.25% Senior Notes Due April 15, 2025 Five Point Two Five Percent Senior Notes Due April 15, 2025 [Member] Five Point Two Five Percent Senior Notes Due April 15, 2025 [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Aggregate principal amount issued Debt Instrument, Face Amount Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Net proceeds from issuance of long-term debt Proceeds from Issuance of Long-term Debt Debt instrument, optional redemption period prior to maturity Debt Instrument, Optional Redemption Period Prior to Maturity Debt Instrument, Optional Redemption Period Prior to Maturity Minimum redemption period notice required Debt Instrument, Redemption Period Required Notice, Minimum Debt Instrument, Redemption Period Required Notice, Minimum Maximum redemption period notice required Debt Instrument, Redemption Period Required Notice, Maximum Debt Instrument, Redemption Period Required Notice, Maximum Redemption price, percentage Debt Instrument, Redemption Price, Percentage Debt extinguishment costs Write off of Deferred Debt Issuance Cost Gross proceeds from issuance of tangible equity units Tangible Equity Units, Issued, Value Tangible Equity Units, Issued, Value Tangible equity units dividend rate Tangible Equity Units, Rate Tangible Equity Units, Rate Tangible equity units, price per share (in dollars per share) Tangible Equity Units, Issued, Stated Amount Per Unit Tangible Equity Units, Issued, Stated Amount Per Unit Tangible equity units, convertible, conversion ratio Debt Instrument, Face Amount Per Note Debt Instrument, Face Amount Per Note Tangible equity units issued, issuance costs, underwriter discount Payment of Tangible Units Issued, Issuance Costs, Underwriter Discount Payment of Tangible Units Issued, Issuance Costs, Underwriter Discount Equal quarterly cash installments per Amortizing Note Tangible Equity Units Convertible Periodic Cash Installments Rate Tangible Equity Units, Convertible, Periodic Cash Installments, Rate Installment payment due on August 15, 2014 per Amortizing Note Tangible Equity Units Convertible First Periodic Cash Installments Rate Tangible Equity Units, Convertible, First Periodic Cash Installments, Rate Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] SBA loan pool securities Small Business Administration Loan Pools Securities [Member] Small Business Administration Loan Pools Securities [Member] U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Non-agency residential mortgage-backed securities Mortgage-backed Securities, Issued by Private Enterprises [Member] Non-agency commercial mortgage-backed securities Commercial Mortgage Backed Securities [Member] Collateralized loan obligations Collateralized Loan Obligations [Member] Securities available-for-sale: Debt Securities, Available-for-sale [Abstract] Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Fair Value Debt Securities, Available-for-sale Series C Depository shares Series C Depository Shares [Member] Series C Depository Shares [Member] Series A Non-cumulative perpetual Series A Preferred Stock [Member] Series B Non-cumulative perpetual Series B Preferred Stock [Member] Sale of Stock [Axis] Sale of Stock [Axis] Sale of Stock [Domain] Sale of Stock [Domain] Over Allotment Option Over-Allotment Option [Member] Underwritten Public Offering Underwritten Public Offering [Member] Underwritten Public Offering [Member] Outstanding shares redeemed (shares) Stock Redeemed or Called During Period, Shares Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, liquidation preference per share (in dollars per share) Preferred Stock, Liquidation Preference Per Share Preferred stock redemption amount Preferred Stock, Redemption Amount Deferred stock issue costs reclassified Depository shares issued Stock Issued During the Period, Depositary Shares Stock Issued During the Period, Depositary Shares Depository shares to preferred stock ratio Depository Shares To Preferred Stock Ratio Depository Shares to Preferred Stock Ratio Offering price per share (in dollars per share) Depository Shares Issued, Price Per Share Depository Shares Issued, Price Per Share Gross proceeds from issuance of preferred stock Proceeds from Issuance of Preferred Stock and Preference Stock Underwriters option period Underwriters Overallotment Option Period The number of days the underwriters have the option to exercise their overallotment option from the closing date. Preferred shares available for issuance Preferred Stock, Capital Shares Reserved for Future Issuance Preferred stock, shares issued Preferred Stock, Shares Issued Depository shares issued Depository Shares Issued Depository Shares Issued Preferred stock, shares redeemed (in shares) Treasury Stock, Preferred, Shares Schedule of Servicing Assets at Fair Value [Table] Schedule of Servicing Assets at Fair Value [Table] Servicing Assets at Fair Value [Line Items] Servicing Assets at Fair Value [Line Items] Servicing Asset at Fair Value, Amount [Roll Forward] Servicing Asset at Fair Value, Amount [Roll Forward] Balance at beginning of year Additions Servicing Asset at Fair Value, Additions Changes in fair value resulting from valuation inputs or assumptions Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions Sales of servicing rights Other—loans paid off Servicing Asset at Fair Value, Other Changes that Affect Balance Balance at end of year Goodwill and Intangible Assets Disclosure [Abstract] GOODWILL AND OTHER INTANGIBLE ASSETS, NET Goodwill and Intangible Assets Disclosure [Text Block] Number of banking offices Number Of Banking Offices Number of offices included in Nature of Operations disclosure. DEPOSITS Deposit Liabilities Disclosures [Text Block] General Counsel General Counsel [Member] General Counsel [Member] Director Director [Member] Threshold period of consecutive payments to remove from nonaccrual status Threshold Period of Consecutive Payments to Remove from Nonaccrual Status Threshold Period of Consecutive Payments to Remove from Nonaccrual Status Interest income Interest expense Provision for loan losses Noninterest income Noninterest expense