Deposits [Abstract] DEPOSITS Deposit Liabilities Disclosures [Text Block] Statement of Comprehensive Income [Abstract] NET INCOME Net Income (Loss) Attributable to Parent Net unrealized gain (loss) from available-for-sale securities, net of tax expense (benefit) of $(2,449), $3,363, and $(68) for the years ended June 30, 2018, 2017 and 2016, respectively. Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Other-than-temporary impairment on securities recognized in other comprehensive income, net of tax expense (benefit) of $1,918, $3,195 and $2,177 for the years ended June 30, 2018, 2017 and 2016, respectively. Other than Temporary Impairment Gains, Investments, Portion in Other Comprehensive Loss, Net of Tax, Portion Attributable to Parent Other than Temporary Impairment Gains, Investments, Portion in Other Comprehensive Loss, Net of Tax, Portion Attributable to Parent Reclassification of net (gain) loss from available-for-sale securities included in income, net of tax expense (benefit) of $(104), $1,536 and $598 for the years ended June 30, 2018, 2017 and 2016, respectively. Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Fair Value Disclosures [Abstract] Aggregate fair value Loans Held-for-sale, Fair Value Disclosure Contractual balance Loans Held-for-sale, Contractual Balance, Including Accrued Interest Loans Held-for-sale, Contractual Balance, Including Accrued Interest Gain Loans Held-for-sale, Fair Value Adjustment Loans Held-for-sale, Fair Value Adjustment Interest income Loans Held-for-sale, Interest Income Loans Held-for-sale, Interest Income Change in fair value Loans Held-for-sale, Change in Fair Value Loans Held-for-sale, Change in Fair Value Total change in fair value Loans Held-for-sale, Change in Fair Value, Total Loans Held-for-sale, Change in Fair Value, Total Debt Disclosure [Abstract] SUBORDINATED NOTES AND DEBENTURES Debt Disclosure [Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [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] Interest income on investments Interest and Dividend Income, Securities, Operating, Trading or Measured at Fair Value Fair value adjustment Trading Securities, Change in Unrealized Holding Gain (Loss) Total Trading Securities, Change in Unrealized Gain and Loss and Interest Income Recorded in Earnings Trading Securities, Change in Unrealized Gain and Loss and Interest Income Recorded in Earnings Compensation Related Costs [Abstract] EMPLOYEE BENEFIT PLAN Compensation Related Costs, General [Text Block] Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] EPIC Systems, Inc. EPIC Systems, Inc. [Member] EPIC Systems, Inc. Business Acquisition [Line Items] Business Acquisition [Line Items] Cash Payments to Acquire Businesses, Gross Total consideration paid Business Combination, Consideration Transferred Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accounts Receivable and Fixed Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accounts Receivable and Fixed Assets Total assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Fair value of net assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Goodwill incident to acquisition Goodwill Income Tax Disclosure [Abstract] Statutory federal tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Provisional adjustment to deferred tax assets as result of Tax Act Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense Provisional amounts recorded for other provisions as result of Tax Act, excluding effects of deferred tax assets Tax Cuts and Jobs Act, Incomplete Accounting, Provisional Income Tax Expense (Benefit), Excluding Effect on Deferred Tax Assets Tax Cuts and Jobs Act, Incomplete Accounting, Provisional Income Tax Expense (Benefit), Excluding Effect on Deferred Tax Assets Reduction in effective tax rate for tax credits received Effective Income Tax Rate Reconciliation, Tax Credit, Percent Income tax benefits related to excess tax benefits from stock compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount Goodwill and Intangible Assets Disclosure [Abstract] GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill and Intangible Assets Disclosure [Text Block] Subsequent Events [Abstract] SUBSEQUENT EVENT Subsequent Events [Text Block] Condensed Financial Information Disclosure [Abstract] PARENT-ONLY CONDENSED FINANCIAL INFORMATION Condensed Financial Information of Parent Company Only Disclosure [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Share-based Compensation, Stock Options, Activity Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of Unrecognized Compensation Cost, Nonvested Awards Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block] Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Earnings Per Share [Abstract] Schedule of Calculation of Basic and Diluted EPS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Banking and Thrift [Abstract] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] BofI Federal Bank Subsidiaries [Member] H and R Block Bank Deposits H and R Block Bank Deposits [Member] H and R Block Bank Deposits [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Regulatory Capital: Regulatory Capital Requirements [Abstract] Tier 1, Amount Tier One Risk Based Capital Common equity tier 1, Amount Tier One Common Equity Tier One Common Equity Total capital (to risk-weighted assets), Amount Capital Assets: Assets [Abstract] Average adjusted, Amount Total Average Adjusted Assets Total Average Adjusted Assets Total risk-weighted, Amount Risk Weighted Assets Regulatory Capital Ratios: Regulatory Capital Ratios [Abstract] Regulatory Capital Ratios [Abstract] Tier 1 leverage (core) capital to adjusted average assets, Ratio Tier One Leverage Capital to Average Assets Tier 1 leverage (core) capital to adjusted average assets, Well Capitalized Ratio Tier One Leverage Capital Required to be Well Capitalized to Average Assets Tier 1 leverage (core) capital to adjusted average assets, Minimum Capital Ratio Tier One Leverage Capital Required for Capital Adequacy to Average Assets Common equity tier 1 capital (to risk-weighted assets), Ratio Tier One Common Equity To Average Assets Tier One Common Equity To Average Assets Common equity tier 1 capital (to risk-weighted assets), Well Capitalized Ratio Tier One Common Equity Required to be Well Capitalized to Average Assets Tier One Common Equity Required to be Well Capitalized to Average Assets Common equity tier 1 capital (to risk-weighted assets), Minimum Capital Ratio Tier One Common Equity Required for Capital Adequacy to Average Assets Tier One Common Equity Required for Capital Adequacy to Average Assets Tier 1 capital (to risk-weighted assets), Ratio Tier One Risk Based Capital to Risk Weighted Assets Tier 1 capital (to risk-weighted assets), Well Capitalized Ratio Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Tier 1 capital (to risk-weighted assets), Minimum Capital Ratio Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Total capital (to risk-weighted assets), Ratio Capital to Risk Weighted Assets Total capital (to risk-weighted assets), Well Capitalized Ratio Capital Required to be Well Capitalized to Risk Weighted Assets Total capital (to risk-weighted assets), Minimum Capital Ratio Capital Required for Capital Adequacy to Risk Weighted Assets Common equity tier 1 capital (to risk-weighted assets) annual increase percentage Tier One Common Equity Required for Capital Adequacy to Average Asset, Annual Increase, Percent Tier One Common Equity Required for Capital Adequacy to Average Asset, Annual Increase, Percent Tier 1 capital (to risk-weighted assets) annual increase percentage Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets, Annual Increase, Percent Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets, Annual Increase, Percent Total capital (to risk-weighted assets) annual increase percentage Capital Required for Capital Adequacy to Risk Weighted Assets, Annual Increase, Percent Capital Required for Capital Adequacy to Risk Weighted Assets, Annual Increase, Percent FAIR VALUE Fair Value Disclosures [Text Block] Receivables [Abstract] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Domain] Class of Financing Receivable, Type [Domain] Other Other Loan [Member] Other Loan [Member] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Total loans modified as TDRs Financing Receivable, Modifications, Recorded Investment Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill [Line Items] Goodwill [Line Items] Goodwill [Roll Forward] Goodwill [Roll Forward] Balance at July 1, 2017 Goodwill incident to acquisition Goodwill, Acquired During Period Balance at June 30, 2018 Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] Nonaccrual Nonperforming Financial Instruments [Member] Mortgage Residential Mortgage [Member] Auto and RV secured Automobile Loan [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Ratio of nonaccrual loans considered TDRs Loans and Leases Receivable, Ratio of Nonperforming Loans Considered TDRs Loans and Leases Receivable, Ratio of Nonperforming Loans Considered TDRs Term which borrowers make timely payments after TDRs are considered nonaccrual Loans and Leases Receivable, TDRs with Timely Payments Considered Nonperforming, Term Loans and Leases Receivable, TDRs with Timely Payments Considered Nonperforming, Term Ratio of nonaccrual loans that are single family mortgage Loans and Leases Receivable, Ratio of Portfolio Segment to Nonperforming Loans Loans and Leases Receivable, Ratio of Portfolio Segment to Nonperforming Loans Value after write-downs of original appraised value, percent Loans and Leases Receivable, Value after Write-downs of Original Appraised Value, Percent Loans and Leases Receivable, Value after Write-downs of Original Appraised Value, Percent Interest recognized on performing loans temporarily modified as TDRs Interest Income, Performing Loans Temporarily Modified as TDRs Interest Income, Performing Loans Temporarily Modified as TDRs Average balances of performing TDR's Financing Receivable, Modifications, Average Recorded Investment, Accruing Loans Financing Receivable, Modifications, Average Recorded Investment, Accruing Loans Average balances of impaired loans and leases Financing Receivable, Average Recorded Investment, Nonaccrual Status Financing Receivable, Average Recorded Investment, Nonaccrual Status Period of delinquent property taxes repaid by borrower Financing Receivable, Modifications, Period of Delinquent Property Taxes Repaid by Borrower Financing Receivable, Modifications, Period of Delinquent Property Taxes Repaid by Borrower Period of interest-only payments made by borrowers that reverted loan back to fully amortizing Financing Receivable, Modifications, Period of Interest-Only Payments Made by Borrowers That Reverted Loan Back To Fully Amortizing Financing Receivable, Modifications, Period of Interest-Only Payments Made by Borrowers That Reverted Loan Back To Fully Amortizing Number of loans modified as TDR within previous twelve months for which there was a payment in default Financing Receivable, Modifications, Subsequent Default, Number of Contracts Non-interest bearing Noninterest-bearing Deposit Liabilities, by Component [Abstract] Non-interest bearing, Amount Noninterest-bearing Deposit Liabilities Interest bearing: Interest-bearing Deposit Liabilities, by Component [Abstract] Demand, Amount Demand Deposit Accounts Demand, Rate Weighted Average Rate Domestic Deposit, Demand Savings, Amount Deposits, Savings Deposits Savings, Rate Weighted Average Rate Domestic Deposit, Savings Total demand and savings, Amount Deposits, Demand and Savings Deposits Deposits, Demand and Savings Deposits Total demand and savings, Rate Weighted Average Rate Domestic Deposit, Demand and Savings Weighted Average Rate Domestic Deposit, Demand and Savings Time deposits: Maturities of Time Deposits [Abstract] $250 and under, Amount Time Deposits, Less Than FDIC Insurance Limit Time Deposits, Less Than FDIC Insurance Limit $250 and under, Rate Weighted Average Interest Rate Of Time Deposits, Less Than FDIC Insurance Limit Weighted Average Interest Rate of Time Deposits, Less Than FDIC Insurance Limit Greater than $250, Amount Time Deposits, at or Above FDIC Insurance Limit Greater than $250, Rate Weighted Average Interest Rate Of Time Deposits, At Or Above FDIC Insurance Limit Weighted Average Interest Rate of Time Deposits, At Or Above FDIC Insurance Limit Total time deposits, Amount Time Deposits Total time deposits, Rate Weighted Average Rate Domestic Deposit, Time Deposits Total interest bearing, Amount Interest-bearing Deposit Liabilities Total interest bearing, Rate Weighted Average Rate, Interest-bearing Domestic Deposits, Point in Time Total deposits Deposits Total deposits, Rate Weighted Average Rate Deposit Weighted Average Rate Deposit Time deposits acquired through broker relationships Interest-bearing Deposit, Time Deposits, Brokered Interest-bearing Deposit, Time Deposits, Brokered Time deposits acquired through broker relationships, $250,000 and under Time Deposits, Less Than $250,000, Brokered Time Deposits, Less Than $250,000, Brokered LOANS, LEASES & ALLOWANCE FOR LOAN AND LEASE LOSSES Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Subordinated Notes Subordinated Debt [Member] Junior Subordinated Debentures Junior Subordinated Debt [Member] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Federal Reserve Bank Advances Federal Reserve Bank Advances [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Line of Credit Line of Credit [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Debt issued principal amount Debt Instrument, Face Amount Effective rate (as percent) Debt Instrument, Interest Rate, Effective Percentage Proceeds from issuance of subordinated notes Proceeds from Issuance of Subordinated Long-term Debt Debt issuance costs and discount (as percent) Debt Issuance Costs and Discount, Percentage Debt Issuance Costs and Discount, Percentage Trust preferred securities Proceeds from Issuance of Trust Preferred Securities Subordinated notes and debentures Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust Description of variable rate basis Debt Instrument, Description of Variable Rate Basis Basis spread on variable rate (as percent) Debt Instrument, Basis Spread on Variable Rate Short-term borrowings outstanding Short-term Debt Maximum borrowing capacity Short-term Debt, Maximum Borrowing Capacity Short-term Debt, Maximum Borrowing Capacity Residential real estate and commercial and industrial loans pledged as collateral Pledged Assets Separately Reported, Loans Pledged as Collateral, at Fair Value Mortgage-backed securities pledged as collateral Pledged Assets Separately Reported, Securities Pledged as Collateral, at Fair Value Federal funds lines of credit, number of banks Line of Credit, Number of Banks Line of Credit, Number of Banks Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Credit line amount outstanding Long-term Line of Credit Investments, Debt and Equity Securities [Abstract] Proceeds Proceeds from Sale of Debt Securities, Available-for-sale Gross realized gains Available-for-sale Securities, Gross Realized Gains Gross realized loss Available-for-sale Securities, Gross Realized Losses Net (loss) gain on securities Available-for-sale Securities, Gross Realized Gain (Loss) Commitments and Contingencies Disclosure [Abstract] Schedule of Contractual Obligation, Fiscal Year Maturity Schedule Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block] Schedule of Activity in the Company's Goodwill Balance Schedule of Goodwill [Table Text Block] Schedule of Company's Acquired Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Weighted Average Useful Life of Acquired Intangible Assets Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block] Schedule of Estimated Future Amortization Expense of Acquired Intangible Assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Quarterly Financial Information Disclosure [Abstract] Interest and dividend income Interest and Dividend Income, Operating Interest expense Interest Expense Net interest income Interest Income (Expense), Net Provision for loan and lease losses Provision for Loan and Lease Losses Net interest income, after provision for loan and lease losses Interest Income (Expense), after Provision for Loan Loss Non-interest income Noninterest Income Non-interest expense Noninterest Expense INCOME BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) NET INCOME Net income attributable to common stock Net Income (Loss) Available to Common Stockholders, Basic Basic earnings per common share (as revised for 2017 and 2016) (in dollars per share) Earnings Per Share, Basic Diluted earnings per common share (as revised for 2017 and 2016) (in dollars per share) Earnings Per Share, Diluted Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Multifamily real estate secured Residential Multifamily Loan [Member] Residential Multifamily Loan [Member] Commercial real estate secured Real Estate [Member] Loan Source [Axis] Loan Source [Axis] Loan Source [Axis] Source of Loan Origination [Domain] Source of Loan Origination [Domain] Source of Loan Origination [Domain] Origination In-house Originated Loans [Member] Loans underwritten directly by the Company. Purchased Purchased Loans [Member] Purchased Loans [Member] Performing Performing Financial Instruments [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Gross loans and leases Loans and Leases Receivable, Gross Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Amortization of expense of intangible assets Amortization of Intangible Assets For the fiscal year ending June 30, Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] 2019 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Net Carrying Amount Finite-Lived Intangible Assets, Net Accounting Policies [Abstract] Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Restatement [Axis] Restatement [Axis] Restatement [Domain] Restatement [Domain] Previously Reported Previously Reported [Member] Adjustment Restatement Adjustment [Member] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Stock options Employee Stock Option [Member] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Error Corrections and Prior Period Adjustments Restatement [Line Items] Error Corrections and Prior Period Adjustments Restatement [Line Items] Earnings Per Common Share Earnings Per Share, Basic [Abstract] Net income attributable to common shareholders Average common shares issued and outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Average unvested RSUs (in shares) Weighted Average Unvested Restricted Stock Grant and RSU Shares, Basic Weighted Average Unvested Restricted Stock Grant and RSU Shares, Basic Total qualifying shares (as revised for 2017 and 2016) (in shares) Total Qualifying Shares, Basic Total Qualifying Shares, Basic Earnings per common share (in dollars per share) Diluted Earnings Per Common Share Earnings Per Share, Diluted [Abstract] Dilutive net income attributable to common shareholders Net Income (Loss) Available to Common Stockholders, Diluted Average common shares issued and outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Dilutive effect of stock options and average unvested RSUs (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Total dilutive common shares issued and outstanding (as revised for 2017 and 2016) (in shares) Total Dilutive Common Shares Issued and Outstanding Total Dilutive Common Shares Issued and Outstanding Diluted earnings per common share (in dollars per share) Basis of Presentation and Consolidation Consolidation, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Restrictions on Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Interest Rate Risk Interest Rate Risk, Policy [Policy Text Block] Interest Rate Risk, Policy [Policy Text Block] Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Brand Partnership Products Collaborative Arrangement, Accounting Policy [Policy Text Block] Securities Marketable Securities, Policy [Policy Text Block] Loans and Leases Finance, Loan and Lease Receivables, Held-for-investment, Policy [Policy Text Block] Loans Held for Sale Finance, Loan and Lease Receivables, Held-for-sale, Policy [Policy Text Block] Allowance for Loan and Lease Losses Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Mortgage Servicing Rights Transfers and Servicing of Financial Assets, Servicing of Financial Assets, Policy [Policy Text Block] Mortgage Banking Derivatives Derivatives, Policy [Policy Text Block] Furniture, Equipment and Software Property, Plant and Equipment, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Goodwill and Other Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Earnings per Common Share Earnings Per Share, Policy [Policy Text Block] Stock-Based Compensation Compensation Related Costs, Policy [Policy Text Block] Federal Home Loan Bank (FHLB) stock Federal Home Loan Bank Stock Requirement [Policy Text Block] Federal Home Loan Bank Stock Requirement [Policy Text Block] Cash Surrender Value of Life Insurance Life Insurance, Bank Owned [Policy Text Block] Life Insurance, Bank Owned [Policy Text Block] Loan Commitments and Related Financial Instruments Loan Commitments, Policy [Policy Text Block] Comprehensive Income Comprehensive Income, Policy [Policy Text Block] Loss Contingencies Commitments and Contingencies, Policy [Policy Text Block] Dividend Restriction Dividend Restriction [Policy Text Block] Dividend Restriction [Policy Text Block] Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Operating Segments Segment Reporting, Policy [Policy Text Block] New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Fair Value Measurement Fair Value Measurement, Policy [Policy Text Block] Loans and Leases Segment Risk Characteristics Loans and Leases Receivable, Segment Risk Characteristics [Policy Text Block] Loans and Leases Receivable, Segment Risk Characteristics Schedule of Fair Value, Off-balance Sheet Risks [Table] Schedule of Fair Value, Off-balance Sheet Risks [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Loan purchase and origination commitments Loan Purchase and Origination Commitments [Member] Loan Purchase and Origination Commitments [Member] Loan Origination Commitments Loan Origination Commitments [Member] Interest Rate Type [Axis] Interest Rate Type [Axis] Interest Rate Type [Axis] Type of Interest Rate [Domain] Type of Interest Rate [Domain] Type of Interest Rate [Domain] Fixed Interest Rate Fixed Interest Rate [Member] Fixed Interest Rate [Member] Variable Interest Rate Adjustable Interest Rate [Member] Adjustable Interest Rate [Member] Other Commitment [Axis] Other Commitment [Axis] Other Commitment [Axis] Other Commitment, Type [Domain] Other Commitment, Type [Domain] Other Commitment, Type [Domain] Sales commitment Sales Commitment [Member] Sales Commitment [Member] Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Off-balance sheet, loan purchase commitment Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability Off-balance sheet, fixed rate commitments to originate weighted-average rate Commitment to Extend Credit, Weighted Average Interest Rate Commitment to Extend Credit, Weighted Average Interest Rate Off-balance sheet, loan origination commitment Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Asset Off-balance sheet risk, ratio of commitments to originate loans to commitments to sell Off-balance Sheet Risk, Ratio of Commitments to Originate Loans to Commitments to Sell Off-balance Sheet Risk, Ratio of Commitments to Originate Loans to Commitments to Sell Number of acquisitions Number of Businesses Acquired Number of states in which the entity operates Number of States in which Entity Operates Deposits acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits Cash paid for acquisition Intangible assets Other assets Goodwill Current: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Current Federal Tax Expense (Benefit) State Current State and Local Tax Expense (Benefit) Current income taxes Current Income Tax Expense (Benefit) Deferred: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Deferred Federal Income Tax Expense (Benefit) State Deferred State and Local Income Tax Expense (Benefit) Deferred income taxes Deferred Income Tax Expense (Benefit) Total Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Series A Preferred Stock Series A Preferred Stock [Member] Statement [Line Items] Statement [Line Items] Loans - Net Allowance for Loan Losses Loans and Leases Receivable, Allowance Stockholders' Equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, par or stated value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, liquidation preference value (in dollars per share) Preferred Stock, Liquidation Preference Per Share Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares, issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Treasury stock, shares (in shares) Treasury Stock, Shares Income Statement [Abstract] INTEREST AND DIVIDEND INCOME: Interest and Dividend Income, Operating [Abstract] Loans and leases, including fees Interest and Fee Income, Loans and Leases Investments Interest and Dividend Income, Securities, Operating Total interest and dividend income INTEREST EXPENSE: Interest Expense [Abstract] Deposits Interest Expense, Deposits Advances from the Federal Home Loan Bank Interest Expense, Federal Home Loan Bank Advances Interest Expense, Federal Home Loan Bank Advances Other borrowings Interest Expense, Other Total interest expense NON-INTEREST INCOME: Noninterest Income [Abstract] Realized gain (loss) on sale of securities Gain (Loss) on Sales of Mortgage Backed Securities (MBS) Other-than-temporary loss on securities: Other than Temporary Impairment Losses, Investments [Abstract] Total impairment losses Other than Temporary Impairment Losses, Investments Loss (gain) recognized in other comprehensive income Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, before Tax, Portion Attributable to Parent Net impairment loss recognized in earnings Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net Fair value gain (loss) on trading securities Total unrealized loss on securities Total Unrealized Gain (Loss) On Securities Total Unrealized Gain (Loss) On Securities Prepayment penalty fee income Prepayment Penalty Fee Income Prepayment Penalty Fee Income Gain on sale – other Gain (Loss) on Disposition of Other Assets Mortgage banking income Mortgage Service Banking Income Mortgage Service Banking Income Banking and service fees Banking and Services Fees Banking and Services Fees Total non-interest income NON-INTEREST EXPENSE: Noninterest Expense [Abstract] Salaries and related costs Labor and Related Expense Data processing and internet Information Technology and Data Processing Advertising and promotional Marketing and Advertising Expense Depreciation and amortization Depreciation, Depletion and Amortization Occupancy and equipment Occupancy And Equipment Expense Occupancy And Equipment Expense Professional services Professional Fees FDIC and regulatory fees FDIC and Primary Federal Regulator Fees FDIC and Primary Federal Regulator Fees Real estate owned and repossessed vehicles Real Estate Owned And Repossessed Vehicles Expense (Recovery) Real Estate Owned And Repossessed Vehicles Expense (Recovery) General and administrative expense Other General and Administrative Expense Total non-interest expense INCOME TAXES NET INCOME ATTRIBUTABLE TO COMMON STOCK COMPREHENSIVE INCOME Schedule of Federal Home Loan Bank, Advances, by Maturity Schedule of Federal Home Loan Bank, Advances, by Maturity [Table Text Block] Schedule of Federal Home Loan Bank, Advances, by Maturity [Table Text Block] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Asset Class [Axis] Asset Class [Axis] Fair Value by Asset Class [Domain] Asset Class [Domain] Collateralized Debt Obligations Collateralized Debt Obligations [Member] Agency RMBS Agency, Residential Mortgage Backed Securities [Member] Agency, Residential Mortgage Backed [Member] Non-Agency RMBS Non-Agency, Residential Mortgage Backed Securities [Member] Non-Agency, Residential Mortgage Backed Securities [Member] Municipal Municipal Bonds [Member] Asset-backed securities and structured notes Asset-backed Securities and Structured Notes [Member] Asset-backed Securities and Structured Notes 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] Trading Debt Securities, Trading, and Equity Securities, FV-NI Securities available-for-sale Available-for-sale Securities Loans Held for Sale Mortgage servicing rights Servicing Asset at Fair Value, Amount Other assets—Derivative instruments Derivative Asset Other liabilities—Derivative instruments Derivative Liability Home equity Home Equity Loan [Member] Warehouse & Other Warehouse and Other [Member] Warehouse and Other [Member] Factoring Factoring [Member] Factoring [Member] Commercial & Industrial Commercial and Industrial [Member] Commercial and Industrial Schedule of Marketable Securities [Table] Schedule of Marketable Securities [Table] Schedule of Marketable Securities [Table] Non-RMBS Other Non-Agency, Residential Mortgage Backed Securities [Member] Other Non-Agency, Residential Mortgage Backed Securities Marketable Securities [Line Items] Marketable Securities [Line Items] Available-for-Sale Amortized Cost Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract] Due within one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Due one to five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Due five to ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Due after ten years Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost Total Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost Available-for-Sale, Fair Value Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract] Due within one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Due one to five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Due five to ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Due after ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Total In-house originated 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 Increase (decrease) resulting from: Effective Income Tax Rate Reconciliation, Percent [Abstract] State taxes—net of federal tax benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Tax reform deferred tax remeasurement Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent Cash surrender value Effective Income Tax Rate Reconciliation, Cash Surrender Value Effective Income Tax Rate Reconciliation, Cash Surrender Value Tax credits Non-taxable income Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Excess benefit RSU vesting Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Effective tax rate Effective Income Tax Rate Reconciliation, Percent MINIMUM REGULATORY CAPITAL REQUIREMENTS Regulatory Capital Requirements under Banking Regulations [Text Block] Schedule of Condensed Financial Statements [Table] Condensed Financial Statements [Table] Parent Parent Company [Member] Condensed Financial Statements, Captions [Line Items] Condensed Financial Statements, Captions [Line Items] CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Accretion of discounts on securities Accretion (Amortization) of Discounts and Premiums, Investments Amortization of borrowing costs Amortization of Debt Issuance Costs Impairment charge on securities Other-than-temporary Impairment Loss, Debt Securities, Held-to-maturity, before Tax Accretion of discounts on loans Amortization (Accretion) of Premiums (Discounts), Loans The net increase(decrease) in interest income during the period representing the allocation of premiums or discounts on originated loans. Net gain on investment securities Gain (Loss) on Sale of Investments Gain on sales of loans held for sale Gain On Sales Of Loans Held For Sale Gain On Sales Of Loans Held For Sale Stock-based compensation expense Share-based Compensation Tax effect from exercise of common stock options and vesting of restricted stock grants Excess Tax Benefit from Share-based Compensation, Operating Activities Equity in undistributed earnings of subsidiary Income (Loss) from Equity Method Investments Decrease (increase) in other assets Increase (Decrease) in Other Operating Assets Increase (decrease) in other liabilities Increase (Decrease) in Other Operating Liabilities Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Proceeds from sale of available-for-sale securities Proceeds from Sale of Available-for-sale Securities Proceeds from principal repayments on loans Proceeds from Principal Repayments on Loans and Leases Held-for-investment Investment in subsidiary Gain (Loss) on Disposition of Stock in Subsidiary Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from exercise of common stock options Proceeds from Stock Options Exercised Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Tax effect from exercise of common stock options and vesting of restricted stock units Excess Tax Benefit from Share-based Compensation, Financing Activities Tax payments related to settlement of restricted stock units Payments Related to Tax Withholding for Share-based Compensation Repurchase of treasury stock Payments for Repurchase of Common Stock Cash dividends on preferred stock Payments of Ordinary Dividends, Preferred Stock and Preference Stock Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities NET CHANGE IN CASH AND CASH EQUIVALENTS Cash and Cash Equivalents, Period Increase (Decrease) CASH AND CASH EQUIVALENTS—Beginning of year Cash and Cash Equivalents, at Carrying Value CASH AND CASH EQUIVALENTS—End of year Available-for-sale debt securities—net unrealized gains Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Available-for-sale, Debt Securities, Net Unrealized Gains Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Available-for-sale, Debt Securities, Net Unrealized Gains Available-for-sale debt securities—non-credit related Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Before Tax, Available-for-Sale, Debt Securities Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Before Tax, Available-for-Sale, Debt Securities Subtotal Accumulated Other Comprehensive Income (Loss), Investment Securities, Before Tax Accumulated Other Comprehensive Income (Loss), Investment Securities, Before Tax Tax (provision) benefit Accumulated Other Comprehensive Income (Loss), Investment Securities, Tax Expense (Benefit) Accumulated Other Comprehensive Income (Loss), Investment Securities, Tax Expense (Benefit) Net unrealized gain (loss) on investment securities in accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Investment Securities, Net of Tax Accumulated Other Comprehensive Income (Loss), Investment Securities, Net of Tax Federal Home Loan Bank, Advances [Table] Federal Home Loan Bank, Advances [Table] Federal Home Loan Bank, Advances [Line Items] Federal Home Loan Bank, Advances [Line Items] Interest rate percentage Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End Weighted average rate percentage Federal Home Loan Bank, Advances, Weighted Average Interest Rate Advances, collateral pledged Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged Advances, maximum amount Federal Home Loan Bank, Maximum Amounts Advanced During Period Federal Home Loan Bank, Maximum Amounts Advanced During Period Advances, amount available immediately Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds Advances, amount available with additional collateral, term Federal Home Loan Bank, Advances, General Debt Obligations, Amount Available Including With Additional Collateral, Term Federal Home Loan Bank, Advances, General Debt Obligations, Amount Available Including With Additional Collateral, Term Amount Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract] Within one year Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months After one but within two years Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Two After two but within three years Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Three After three but within four years Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Four After four but within five years Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Five After five years Federal Home Loan Bank, Advances, Maturities Summary, Due after Year Five Total Advances from Federal Home Loan Banks Weighted-Average Rate Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due [Abstract] Within one year Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due within One Year of Balance Sheet Date After one but within two years Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, One to Two Years from Balance Sheet Date After two but within three years Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, Two to Three Years from Balance Sheet Date After three but within four years Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, Three to Four Years from Balance Sheet Date After four but within five years Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, Four to Five Years from Balance Sheet Date After five years Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, after Five Years from Balance Sheet Date Total Term advances Long-term Federal Home Loan Bank Advances, Current Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of Units Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Non-vested, beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Canceled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Non-vested, ending balance (in shares) Weighted-Average Grant-Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Non-vested, beginning balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Canceled (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Non-vested, ending balance (in dollars per share) Common stock split, conversion ratio Stockholders' Equity Note, Stock Split, Conversion Ratio ORGANIZATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value, Measurements, Nonrecurring Fair Value, Measurements, Nonrecurring [Member] Level 3 Mortgage Nonperforming Financing Receivable, Single Family [Member] Nonperforming Financing Receivable, Single Family [Member] Home equity Nonperforming Financing Receivable, Home Equity [Member] Nonperforming Financing Receivable, Home Equity [Member] Multifamily real estate secured Nonperforming Financing Receivable, Multifamily [Member] Nonperforming Financing Receivable, Multifamily [Member] Auto and RV secured Nonperforming Financing Receivable, Recreational Vehicle and Auto [Member] Nonperforming Financing Receivable, Recreational Vehicle and Auto [Member] Commercial & Industrial Nonperforming Financing Receivable, Commercial and Industrial [Member] Nonperforming Financing Receivable, Commercial and Industrial Other Nonperforming Financing Receivable Other Loans [Member] Nonperforming Financing Receivable Other Loans Single family real estate Other Real Estate Owned Single Family [Member] Other Real Estate Owned Single Family [Member] Autos and RVs Foreclosed Assets, Recreational Vehicle and Auto [Member] Foreclosed Assets, Recreational Vehicle and Auto [Member] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Sales comparison approach Valuation, Market Approach [Member] Sales comparison approach and income approach Market Approach and Income Approach Valuation Technique [Member] Market Approach and Income Approach Valuation Technique [Member] Discounted cash flows Valuation, Income Approach [Member] Measurement Input Type [Axis] Measurement Input Type [Axis] Measurement Input Type [Domain] Measurement Input Type [Domain] Adjustment for differences between the comparable sales Measurement Input, Comparability Adjustment [Member] Adjustment for differences between the comparable sales and adjustments for differences in net operating income expectations, capitalization rate Measurement Input, Appraised Value and Comparability Adjustment [Member] Measurement Input, Appraised Value and Comparability Adjustment Discount Rate Measurement Input, Discount Rate [Member] Projected Constant Prepayment Rate Measurement Input, Constant Prepayment Rate [Member] Projected Constant Default Rate Measurement Input, Default Rate [Member] Projected Loss Severity Measurement Input, Loss Severity [Member] Weighted Average Weighted Average [Member] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Impaired loans and leases, fair value Impaired Financing Receivable, Fair Value Disclosure Impaired Financing Receivable, Fair Value Disclosure Other real estate owned and foreclosed assets, fair value Other Real Estate Owned and Foreclosed Assets, Fair Value Disclosure Other Real Estate Owned and Foreclosed Assets, Fair Value Disclosure Impaired loans, measurement input Impaired Loans, Measurement Input Impaired Loans, Measurement Input Other real estate owned, measurement input Other Real Estate Owned, Measurement Input Other repossessed assets, measurement input Other Repossessed Assets, Measurement Input Other Repossessed Assets, Measurement Input 401(k) plan, maximum employee annual contribution Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 401(k) plan, employer contribution match percentage Defined Contribution Plan, Employer Matching Contribution, Percent of Match 401(k) plan, employer contribution, employee's deferral compensation percentage Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 401(k) plan expense Defined Contribution Plan, Cost 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] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Nationwide Bank Nationwide Bank [Member] Nationwide Bank Subsequent Event [Line Items] Subsequent Event [Line Items] Checking, savings and money market deposits acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Checking, Savings and Money Market Deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Checking, Savings and Money Market Deposits Time deposits acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Time Deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Checking, Time Deposits 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] Balance—beginning of period Unrecognized Tax Benefits Additions—current year tax positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Additions—prior year tax positions Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Reductions—prior year tax positions Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Total liability for unrecognized tax positions—end of period Condensed Balance Sheets Condensed Balance Sheet [Table Text Block] Statements of Income Condensed Income Statement [Table Text Block] Statements of Cash Flows Condensed Cash Flow Statement [Table Text Block] QUARTERLY FINANCIAL INFORMATION (UNAUDITED) Quarterly Financial Information [Text Block] Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivables Past Due [Table] Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Recorded Investment, Past Due [Line Items] Nonaccrual loans and leases Financing Receivable, Recorded Investment, Nonaccrual Status Total nonaccrual loans secured by real estate Financing Receivable, Recorded Investment, Loans Secured by Real Estate, Nonaccrual Status Financing Receivable, Recorded Investment, Loans Secured by Real Estate, Nonaccrual Status Nonaccrual loans and leases to total loans (as percent) Loans and Leases Receivable, Ratio of Nonperforming Loans to All Loans Concentration Risk [Table] Concentration Risk [Table] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Mortgage loans Loans [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Geographic concentration risk Geographic Concentration Risk [Member] Geographical [Axis] Geographical [Axis] Segment, Geographical [Domain] Geographical [Domain] CALIFORNIA CALIFORNIA Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Emerald Advance Emerald Advance [Member] Emerald Advance Concentration Risk [Line Items] Concentration Risk [Line Items] Number of states in which the bank operates Restricted cash, minimum reserve balances Restricted Cash and Cash Equivalents Concentration risk percentage Concentration Risk, Percentage Concentration risk, item measured Concentration Risk, Benchmark Description Concentration risk, geographic area Concentration Risk, Additional Characteristic Loans and leases interest and dividend retainer fee (as percent) Loans and Leases Interest And Dividend Income, Retainer Percentage Fee Loans and Leases Interest And Dividend Income, Retainer Percentage Fee Fixed assets, cost capitalization threshold Furniture, Equipment and Software, Estimated Useful Lives Furniture, Equipment and Software, Estimated Useful Lives Fixed assets, estimated useful lives Furniture, Equipment and Software, Threshold For Capitalization Furniture, Equipment and Software, Threshold For Capitalization Number of reportable units Number of Reportable Segments Number of operating units Number of Operating Segments Nonaccrual loans and leases—90 days past due plus other nonaccrual loans and leases Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due Plus Other Nonaccrual Loans Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due Plus Other Nonaccrual Loans Troubled debt restructured loans and leases—non-accrual Financing Receivable, Modifications, Recorded Investment, Nonaccrual Status Financing Receivable, Modifications, Recorded Investment, Nonaccrual Status Troubled debt restructured loans and leases—performing Financing Receivable, Modifications, Recorded Investment, Accruing Financing Receivable, Modifications, Recorded Investment, Accruing Total impaired loans and leases Impaired Financing Receivable, Recorded Investment Debt Securities, Trading, and Equity Securities, FV-NI [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Mortgage-backed securities (RMBS) Residential Mortgage Backed Securities [Member] U.S Agencies Non-agency Debt and Equity Securities, FV-NI [Line Items] Debt and Equity Securities, FV-NI [Line Items] Securities trading Schedule of Available-for-sale Securities [Table] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Available-for-sale, Amortized Cost Available-for-sale Securities, Amortized Cost Basis Available-for-sale, Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Available-for-sale, Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Available for sale Within 12 months Time Deposit Maturities, Next Twelve Months 13 to 24 months Time Deposit Maturities, Year Two 25 to 36 months Time Deposit Maturities, Year Three 37 to 48 months Time Deposit Maturities, Year Four 49 to 60 months Time Deposit Maturities, Year Five Thereafter Time Deposit Maturities, after Year Five Deposits from principal officers, directors and their affiliates Related Party Deposit Liabilities Schedule of Fair Value of Assets Acquired Epic on the Consolidated Balance Sheets Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding, beginning (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Canceled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Outstanding, ending (in shares) Weighted-Average Exercise Price Per Share Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Outstanding, beginning (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Canceled (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Outstanding, ending (in dollars per share) Options exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Options exercisable (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price ADVANCES FROM THE FEDERAL HOME LOAN BANK Federal Home Loan Bank Advances, Disclosure [Text Block] RMBS, Super Senior Securities Non-Agency RMBS, Super Senior Securities [Member] Non-Agency RMBS, Super Senior Securities [Member] RMBS, Mezzanine Z-Tranche Securities Non-Agency RMBS, Mezzanine Z-Tranche Securities [Member] Non-Agency RMBS, Mezzanine Z-Tranche Securities [Member] RMBS, Senior-Support Securities Non-Agency RMBS, Senior-Support Securities [Member] Non-Agency RMBS, Senior-Support Securities [Member] Available-for-sale, number of securities Available-for-sale, Number of Securities Available-for-sale, Number of Securities Gain on sale of available-for-sale securities Number of senior support securities sold Certain Loans Acquired in Transfer Accounted for as Debt Securities, Number Certain Loans Acquired in Transfer Accounted for as Debt Securities, Number Loss on sale of senior support securities Certain Loans Acquired in Transfer Accounted for as Debt Securities, Loss On Sale Certain Loans Acquired in Transfer Accounted for as Debt Securities, Loss On Sale Debt securities available-for-sale and held-to-maturity pledged to secure borrowings Held-to-maturity and Available-for-sale Securities Pledged as Collateral Held-to-maturity and Available-for-sale Securities Pledged as Collateral Securities in a continuous loss position for a period of more than 12 months Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year Securities in a continuous loss position for a period of less than 12 months Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year Number of securities with cumulative credit losses Available-for-sale and Held-to-maturity, Securities with Cumulative Credit Losses, Number Available-for-sale and Held-to-maturity, Securities with Cumulative Credit Losses, Number Other than temporary impairment recognized in earnings Other than Temporary Impairment, Credit Losses Recognized in Earnings, Period Increase (Decrease) Number of securities with other than temporary impairment Securities With Other Than Temporary Impairment, Number Securities With Other Than Temporary Impairment, Number Proceeds from sale of trading securities Proceeds from Sale of Debt and Equity Securities, FV-NI, Held-for-investment Gain on sale of trading securities Trading Securities, Realized Gain (Loss) Number of trading securities sold Trading Securities, Number Trading Securities, Number Number of available-for-sale securities sold Available-for-sale Securities, Number Sold Available-for-sale Securities, Number Sold Carrying value of available-for-sale securities sold Available-for-sale Securities, Sold Security, at Carrying Value Available-for-sale Securities, Sold Security, at Carrying Value Loss on sale of available-for-sale securities 2019 Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Year One As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest, expected to vest in year one. 2020 Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Year Two As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest, expected to vest in year two after the balance sheet date. 2021 Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Year Three As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest, expected to vest in year three after the balance sheet date. 2022 Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Year Four Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Year Four 2023 Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Year Five Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Year Five Thereafter Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, After Year Five Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, After Year Five Total Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized ASSETS Cash and cash equivalents Loans Loans and Leases Receivable, Net Amount Investment securities Marketable Securities Other assets Other Assets Investment in subsidiary Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures TOTAL ASSETS Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Accrued interest payable Interest Payable Accounts payable and accrued liabilities and other liabilities Accounts Payable and Other Accrued Liabilities Total liabilities Liabilities Stockholders’ equity Stockholders' Equity Attributable to Parent TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Covenant not to compete Noncompete Agreements [Member] Customer relationships Customer Relationships [Member] Developed technologies Developed Technology Rights [Member] Trade name Trade Names [Member] Weighted-Average Useful Lives (Years) Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 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] With no related allowance recorded: Financing Receivable, Evaluated Individually For Impairment, With No Related Allowance Recorded [Abstract] Financing Receivable, Evaluated Individually For Impairment, With No Related Allowance Recorded [Abstract] Unpaid Principal Balance Financing Receivable, with No Related Allowance, Unpaid Principal Balance, Individually Evaluated for Impairment Financing Receivable, with No Related Allowance, Unpaid Principal Balance, Individually Evaluated for Impairment Principal Balance Adjustment Financing Receivable, with No Related Allowance, Charge-off, Individually Evaluated for Impairment Financing Receivable, with No Related Allowance, Charge-off, Individually Evaluated for Impairment Recorded Investment Financing Receivable, with No Related Allowance, Unpaid Book Balance, Individually Evaluated for Impairment Financing Receivable, with No Related Allowance, Unpaid Book Balance, Individually Evaluated for Impairment Accrued Interest/Origination Fees Financing Receivable, with No Related Allowance, Accrued Interest and Origination Fees, Individually Evaluated for Impairment Financing Receivable, with No Related Allowance, Accrued Interest and Origination Fees, Individually Evaluated for Impairment Total Impaired Financing Receivable, with No Related Allowance, Recorded Investment, Individually Evaluated for Impairment, including Accrued Interest and Unaccreted Discounts and Loan Fees Impaired Financing Receivable, with No Related Allowance, Recorded Investment, Individually Evaluated for Impairment, including Accrued Interest and Unaccreted Discounts and Loan Fees With an allowance recorded: Financing Receivable, Evaluated Individually For Impairment, With Related Allowance Recorded [Abstract] Financing Receivable, Evaluated Individually For Impairment, With Related Allowance Recorded [Abstract] Unpaid Principal Balance Financing Receivable, with Related Allowance, Unpaid Principal Balance, Individually Evaluated for Impairment Financing Receivable, with Related Allowance, Unpaid Principal Balance, Individually Evaluated for Impairment Principal Balance Adjustment Financing Receivable, with Related Allowance, Charge-off, Individually Evaluated for Impairment Financing Receivable, with Related Allowance, Charge-off, Individually Evaluated for Impairment Recorded Investment Financing Receivable, with Related Allowance, Unpaid Book Balance, Individually Evaluated for Impairment Financing Receivable, with Related Allowance, Unpaid Book Balance, Individually Evaluated for Impairment Accrued Interest/Origination Fees Financing Receivable, with Related Allowance, Accrued Interest and Origination Fees, Individually Evaluated for Impairment Financing Receivable, with Related Allowance, Accrued Interest and Origination Fees, Individually Evaluated for Impairment Total Impaired Financing Receivable, with Related Allowance, Recorded Investment, Individually Evaluated for Impairment, including Accrued Interest and Unaccreted Discounts and Loan Fees Impaired Financing Receivable, with Related Allowance, Recorded Investment, Individually Evaluated for Impairment, including Accrued Interest and Unaccreted Discounts and Loan Fees Related Allocation of General Allowance Impaired Financing Receivable, Related General Allowance Impaired Financing Receivable, Related General Allowance Related Allocation of Specific Allowance Impaired Financing Receivable, Related Specific Allowance Impaired Financing Receivable, Related Specific Allowance As a % of total gross loans and leases Financing Receivable, Evaluated Individually For Impairment As a Percentage of Gross Loans [Abstract] Financing Receivable, Evaluated Individually For Impairment As a Percentage of Gross Loans [Abstract] Unpaid Principal Balance Financing Receivable, Unpaid Principal Balance, Individually Evaluated for Impairment, Ratio to All Loans Financing Receivable, Unpaid Principal Balance, Individually Evaluated for Impairment, Ratio to All Loans Principal Balance Adjustment Financing Receivable, Charge-off, Individually Evaluated for Impairment, Ratio to All Loans Financing Receivable, Charge-off, Individually Evaluated for Impairment, Ratio to All Loans Recorded Investment Financing Receivable, Unpaid Book Balance, Individually Evaluated for Impairment, Ratio to All Loans Financing Receivable, Unpaid Book Balance, Individually Evaluated for Impairment, Ratio to All Loans Accrued Interest/Origination Fees Financing Receivable, Accrued Interest and Origination Fees, Individually Evaluated for Impairment, Ratio to All Loans Financing Receivable, Accrued Interest and Origination Fees, Individually Evaluated for Impairment, Ratio to All Loans Total Impaired Financing Receivable, Recorded Investment, Individually Evaluated for Impairment, including Accrued Interest and Unaccreted Discounts and Loan Fees, Ratio to All Loans Impaired Financing Receivable, Recorded Investment, Individually Evaluated for Impairment, including Accrued Interest and Unaccreted Discounts and Loan Fees, Ratio to All Loans Related Allocation of General Allowance Impaired Financing Receivable, Related General Allowance, Ratio to Gross Loans Impaired Financing Receivable, Related General Allowance, Ratio to Gross Loans Related Allocation of Specific Allowance Impaired Financing Receivable, Related Specific Allowance, Ratio to Gross Loans Impaired Financing Receivable, Related Specific Allowance, Ratio to Gross Loans Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Convertible Preferred Stock Preferred Stock [Member] Common Stock Common Stock [Member] Treasury Treasury Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss), Net of Income Tax AOCI Attributable to Parent [Member] Restricted stock Restricted Stock [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Convertible Preferred Stock, Beginning Balance (in shares) Common Stock, Beginning Balance, Issued (in shares) Common stock, Beginning Balance (in shares) Stockholders' equity, Beginning Balance Net income Other comprehensive income (loss) Cash dividends on preferred stock Dividends, Preferred Stock, Cash Issuance of common stock (in shares) Stock Issued During Period, Common Stock, Shares, New Issues Stock Issued During Period, Common Stock, Shares, New Issues Issuance of common stock Stock Issued During Period, Common Stock, Value, New Issues Stock Issued During Period, Common Stock, Value, New Issues Repurchase of treasury stock (in shares) Treasury Stock, Shares, Acquired Repurchase of treasury stock Treasury Stock, Value, Acquired, Cost Method Stock-based compensation expense (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Stock-based compensation expense Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Restricted stock unit vesting and tax benefits, issued (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Restricted stock unit vesting and tax benefits, treasury (in shares) Shares Paid for Tax Withholding for Share Based Compensation Restricted stock unit vesting and tax benefits, outstanding (in shares) Restricted Stock, Shares Issued Net of Shares for Tax Withholdings Restricted stock unit vesting and tax benefits Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Stock option exercises and tax benefits (in shares) Stock option exercises and tax benefits outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Net Of Options For Tax Withholdings Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Net Of Options For Tax Withholdings Stock option exercises and tax benefits Stock Issued During Period, Value, Stock Options Exercised Convertible Preferred Stock, Ending Balance (in shares) Common Stock, Ending Balance, Issued (in shares) Common stock, Ending Balance (in shares) Stockholders' equity, Ending Balance Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Level 3, Fair Value, Assets Measured on Recurring Basis Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of Fair Value Inputs, Assets, Quantitative Information Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Schedule of Level 3, Change in Unrealized Gain (Loss) and Interest income Included in Earnings Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block] Schedule of Fair Value Assets Measured on Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Schedule of Fair Value, Loans Held For Sale Fair Value, Loans Held For Sale [Table Text Block] Fair Value, Loans Held For Sale [Table Text Block] Schedule of Fair Value, by Balance Sheet Grouping Fair Value, by Balance Sheet Grouping [Table Text Block] Schedule of Quarterly Financial Information Quarterly Financial Information [Table Text Block] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Level 1 Level 2 Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Measurement Basis [Axis] Fair Value, Disclosure Item Amounts [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Carrying (Reported) Amount, Fair Value Disclosure Reported Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Financial assets: Assets, Fair Value Disclosure [Abstract] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Loans held for sale, at fair value Loans held for sale, at lower of cost or fair value Loans Held for Sale, Lower of Cost or Fair Value Loans Held for Sale, Lower of Cost or Fair Value Loans and leases held for investment—net Loans Receivable, Fair Value Disclosure Accrued interest receivable Accrued Interest Receivable, Fair Value Disclosure Accrued Interest Receivable, Fair Value Disclosure Financial liabilities: Liabilities, Fair Value Disclosure [Abstract] Total deposits Deposits, Fair Value Disclosure Securities sold under agreements to repurchase Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure Advances from the Federal Home Loan Bank Federal Home Loan Bank Borrowings, Fair Value Disclosure Subordinated notes and debentures Subordinated Debt Obligations, Fair Value Disclosure Accrued interest payable Accrued Interest Payable, Fair Value Disclosure Accrued Interest Payable, Fair Value Disclosure EARNINGS PER COMMON SHARE Earnings Per Share [Text Block] Property, Plant and Equipment [Abstract] FURNITURE, EQUIPMENT AND SOFTWARE Property, Plant and Equipment Disclosure [Text Block] Schedule of Loans by Class Schedule of Loans by Class [Table Text Block] Schedule of Loans by Class [Table Text Block] Schedule of Credit Losses Related to Financing Receivables, Current and Noncurrent Schedule of Credit Losses Related to Financing Receivables, Current and Noncurrent [Table Text Block] Schedule of Impaired Financing Receivables Impaired Financing Receivables [Table Text Block] Schedule of Allowance for Credit Losses on Financing Receivables Allowance for Credit Losses on Financing Receivables [Table Text Block] Schedule of Financing Receivables, Nonaccrual Status Schedule of Financing Receivables, Non Accrual Status [Table Text Block] Schedule of Loans Performing and Nonaccrual Schedule Of Loans Performing And NonPerforming [Table Text Block] Schedule Of Loans Performing And NonPerforming [Table Text Block] Schedule of Troubled Debt Restructurings on Financing Receivables Troubled Debt Restructurings on Financing Receivables [Table Text Block] Schedule of Financing Receivable Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Schedule of Past Due Financing Receivables Past Due Financing Receivables [Table Text Block] Schedule of Carrying Amortized and Fair Value of Major Categories of Securities Marketable Securities [Table Text Block] Schedule of Securities in Unrealized Loss Position Schedule of Unrealized Loss on Investments [Table Text Block] Schedule of Anticipated Credit Losses Recognized in Income Statement Through Other Than Temporary Impairment Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block] Schedule of Realized Gain (Loss) on Sale of Available-for-Sale Securities Schedule of Realized Gain (Loss) [Table Text Block] Schedule of Unrealized Gain (Loss) on Securities in Accumulated Other Comprehensive Loss Unrealized Gain (Loss) on Investments [Table Text Block] Schedule of Securities Classified by Contractual Maturity Date Investments Classified by Contractual Maturity Date [Table Text Block] Statement of Cash Flows [Abstract] Net accretion of discounts on loans and leases Valuation of financial instruments carried at fair value Increase (Decrease) in Financial Instruments Used in Operating Activities Net gain on sale of investment securities Deferred income taxes Origination of loans held for sale Payments for Origination and Purchases of Loans Held-for-sale Unrealized (gain) loss on loans held for sale Unrealized Gain Loss On Loans Held For Sale Unrealized Gain Loss On Loans Held For Sale Proceeds from sale of loans held for sale (revised for 2017 and 2016) Proceeds from Sale of Loans Held-for-sale Change in fair value of mortgage servicing rights Mortgage Servicing Rights (MSR) Impairment (Recovery) (Gain) loss on sale of other real estate and foreclosed assets Gains (Losses) On Sale Of Other Real Estate And Foreclosed Assets Gains (Losses) On Sale Of Other Real Estate And Foreclosed Assets Net changes in assets and liabilities which provide (use) cash: Increase (Decrease) in Operating Capital [Abstract] Accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Other assets (revised for 2017 and 2016) Accrued interest payable Increase (Decrease) in Interest Payable, Net Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Net cash provided by operating activities (revised for 2017 and 2016) Purchases of investment securities Payments to Acquire Marketable Securities Proceeds from sales of available-for-sale and trading securities Proceeds from Sale of Available-for-sale and Trading Securities Proceeds from Sale of Available-for-sale and Trading Securities Proceeds from repayment of securities Proceeds From Repayment Of Securities Proceeds From Repayment Of Securities Purchase of stock of the Federal Home Loan Bank Payments to Acquire Federal Reserve Bank Stock Proceeds from redemption of stock of Federal Home Loan Bank Proceeds from Sale of Federal Reserve Bank Stock Origination of loans held for investment Origination Of Loans Net Origination Of Loans Net Proceeds from sale of loans held for investment (revised for 2017 and 2016) Proceeds from Sale of Loans Held-for-investment Origination of mortgage warehouse loans, net Payments for Origination of Mortgage Loans Held-for-sale Proceeds from sales of other real estate owned and repossessed assets Proceeds from Sale of Foreclosed Assets Cash paid for acquisition Purchases of loans and leases, net of discounts and premiums Purchases Of Loans Net Of Discounts And Premiums Purchases Of Loans Net Of Discounts And Premiums Principal repayments on loans and leases Purchases of furniture, equipment and software Payments to Acquire Productive Assets Net increase in deposits Increase (Decrease) in Deposits Proceeds from the Federal Home Loan Bank term advances Proceeds from FHLBank Advance, Investing Activities Repayment of the Federal Home Loan Bank term advances Payments for FHLBank Advance, Investing Activities Net (repayment) proceeds of Federal Home Loan Bank other advances Proceeds From (Repayments Of) Federal Home Loan Bank, Other Advances Proceeds From (Repayments Of) Federal Home Loan Bank, Other Advances Repayments of other borrowings and securities sold under agreements to repurchase Repayments of Debt Repurchase of treasury stock Tax benefit from exercise of common stock options and vesting of restricted stock grants Cash dividends paid on preferred stock Proceeds from issuance of subordinated notes SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: Supplemental Cash Flow Information [Abstract] Interest paid on deposits and borrowed funds Interest Paid, Including Capitalized Interest, Operating and Investing Activities Income taxes paid Income Taxes Paid Transfers to other real estate and repossessed vehicles Transfers To Other Real Estate And Repossessed Vehicles Transfers To Other Real Estate And Repossessed Vehicles Transfers from loans and leases held for investment to loans held for sale Transfer of Portfolio Loans and Leases to Held-for-sale Transfers from loans held for sale to loans and leases held for investment Transfer of Loans Held-for-sale to Portfolio Loans Loans held for investment sold, cash not received (revised for 2016) Loans Held-for-sale Sold, Cash Not Received Loans Held-for-sale Sold, Cash Not Received Securities transferred from held-to-maturity to available-for-sale portfolio Debt Securities, Held-to-maturity, Transfer, Amount Equity [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Stock Issuance Plan Name [Axis] Stock Issuance Plan Name [Axis] Stock Issuance Plan Name [Axis] Stock Issuance Plan Name [Domain] Stock Issuance Plan Name [Domain] [Domain] for Stock Issuance Plan Name [Axis] ATM Offering At-the-Market Equity Distribution Agreement [Member] At-the-Market Equity Distribution Agreement [Member] Class of Stock [Line Items] Class of Stock [Line Items] Weighted Average Per Share Price (in dollars per share) Sale Of Stock, Weighted Average Per Share Price Sale of Stock, Weighted Average Per Share Price Number of shares sold (in shares) Net Proceeds Compensation to Distribution Agent Sale of Stock, Compensation to Agent Sale of Stock, Compensation to Agent Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period 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 (in shares) Entity Common Stock, Shares Outstanding Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Public Float Entity Public Float Impaired loans Other real estate owned Real Estate Acquired in Satisfaction of Debt [Member] Unemployment rate Fair Value Inputs, Unemployment Rate Fair Value Inputs, Unemployment Rate Available-for-sale securities, measurement input Debt Securities, Available-for-sale, Measurement Input Description of variable rate basis Fair Value Inputs, Discount Rate, Description of Variable Rate Basis Fair Value Inputs, Discount Rate, Description of Variable Rate Basis Impaired loans, write-off Financing Receivable, Allowance for Credit Losses, Write-downs Impaired loans, additional provision for loan losses Financing Receivable, Allowance for Credit Losses, Period Increase (Decrease) Other real estate owned, valuation allowance Real Estate Owned, Valuation Allowance, Amounts Applied Held-to-maturity securities, carrying amount Debt Securities, Held-to-maturity STOCKHOLDERS' EQUITY Stockholders' Equity Note Disclosure [Text Block] Schedule of Components of Provision for Income Taxes Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Net Deferred Tax Asset Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Unrecognized Tax Benefits Roll Forward Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Performing loans temporarily modified as TDR Financing Receivable, Performing Loans Temporarily Modified as TDR Financing Receivable, Performing Loans Temporarily Modified as TDR Nonaccrual loans and leases Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest Interest income recognized on performing TDRs Financing Receivable, Modifications, Interest Income Recognized, Accruing Loans Financing Receivable, Modifications, Interest Income Recognized, Accruing Loans Cash and due from banks Cash and Due from Banks Federal funds sold Federal Funds Sold Total cash and cash equivalents Cash, Cash Equivalents, and Federal Funds Sold Securities: Marketable Securities [Abstract] Stock of the Federal Home Loan Bank, at cost Federal Home Loan Bank Stock Loans held for sale, carried at fair value Loans Held For Sale, Carried At Fair Value Loans Held For Sale, Carried At Fair Value Loans held for sale, carried at lower of cost or fair value Loans and leases—net of allowance for loan and lease losses of $49,151 as of June 2018 and $40,832 as of June 2017 Accrued interest receivable Interest Receivable Furniture, equipment and software—net Property, Plant and Equipment, Net Deferred income tax Deferred Tax Assets, Net of Valuation Allowance Cash surrender value of life insurance Bank Owned Life Insurance Mortgage servicing rights, carried at fair value Servicing Asset Other real estate owned and repossessed vehicles Repossessed Assets Goodwill and other intangible assets—net Intangible Assets, Net (Including Goodwill) Deposits: Non-interest bearing Interest bearing Securities sold under agreements to repurchase Securities Sold under Agreements to Repurchase Advances from the Federal Home Loan Bank Subordinated notes and debentures and other Subordinated Debt COMMITMENTS AND CONTINGENCIES (Note 15) Commitments and Contingencies STOCKHOLDERS’ EQUITY: Preferred stock—$0.01 par value; 1,000,000 shares authorized; Series A—$10,000 stated value and liquidation preference per share; 515 shares issued and outstanding as of June 2018 and June 2017 Preferred Stock, Value, Issued Common stock—$0.01 par value; 150,000,000 shares authorized, 65,796,060 shares issued and 62,688,064 shares outstanding as of June 2018, 65,115,932 shares issued and 63,536,244 shares outstanding as of June 2017 Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Accumulated other comprehensive income (loss)—net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Retained earnings Retained Earnings (Accumulated Deficit) Treasury stock, at cost; 3,107,996 shares as of June 2018 and 1,579,688 shares as of June 2017 Treasury Stock, Value Total stockholders’ equity Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Plans Stock Incentive Plans [Member] Stock Incentive Plans 2004 Plan 2004 Stock Incentive Plan [Member] 2004 Stock Incentive Plan 2014 Plan 2014 Stock Incentive Plan [Member] 2014 Stock Incentive Plan [Member] Title of Individual [Axis] Title of Individual [Axis] Title of Individual with Relationship to Entity [Domain] Relationship to Entity [Domain] Chief Executive Officer Chief Executive Officer [Member] Employees and Directors Employees and Directors [Member] Employees and Directors Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Year One Share-based Compensation Award, Tranche One [Member] Year two Share-based Compensation Award, Tranche Two [Member] Year Three Share-based Compensation Award, Tranche Three [Member] Year Four Share-based Compensation Award, Tranche Four [Member] Share-based Compensation Award, Tranche Four Common stock, dividend issued, shares, stock split (in shares) Stockholders' Equity Note, Stock Split, Conversion Ratio, Number of Shares Stockholders' Equity Note, Stock Split, Conversion Ratio, Number of Shares Number of stock incentive plans Number of Stock Incentive Plans The number of stock incentive plans. Vesting period for options granted Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Contractual term for options granted under the 1999 Plan Share-based Compensation Arrangement by Share-based Payment Award, Expiration Term Term the equity-based award expires. Percentage of outstanding shares always available for grants under the 1999 Plan Share-based Compensation, Outstanding Shares of the Company Available for Grant Under the Plan, Percentage The percentage of outstanding shares of the Company that would always be available for grants under the plan. Annual percentage increase to shares available for grant Share-based Compensation Arrangement by Share-Based Payment Award, Annual Increase to Shares Available for Grant, Percentage Share-based Compensation Arrangement by Share-Based Payment Award, Annual Increase to Shares Available for Grant, Percentage Number of fiscal years stock increases Share-based Compensation Arrangements by Share-based Payment Award, Number of Fiscal Years Stock Increases Share-based Compensation Arrangements by Share-based Payment Award, Number of Fiscal Years Stock Increases Number of shares available for issuance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Aggregate intrinsic value of options exercised or converted during the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Number of restricted stock granted (in shares) Number of restricted stocks vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested and Issued in Period The number of equity-based payment instruments, excluding stock (or unit) options, that vested and issued during the reporting period. Restricted shares grants, annual vesting percentage Restricted Share Grants, Annual Vesting Percentage Restricted Share Grants, Annual Vesting Percentage Number of restricted stock cancelled (in shares) Estimated fair value of non-vested awards Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Fair Value Number of vesting tranches during requisite service period Deferred Compensation Arrangement with Individual, Number of Vesting Tranches During Requisite Service Period Deferred Compensation Arrangement with Individual, Number of Vesting Tranches During Requisite Service Period Requisite service period of equity-based award agreement based on service and market conditions Deferred Compensation Arrangement with Individual, Requisite Service Period Period for recognition of unrecognized compensation expense related to non-vested awards Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Unrecognized compensation expense related to non-vested awards Tax benefit from stock-based compensation expense Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Total fair value of shares vested in the period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Domain] Financing Receivables, Period Past Due [Domain] 30-59 Days Past Due Financing Receivables, 30 to 59 Days Past Due [Member] 60-89 Days Past Due Financing Receivables, 60 to 89 Days Past Due [Member] 90 Days Past Due Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Past due gross loans and leases Financing Receivable, Recorded Investment, Past Due As a % of gross loans and leases Financing Receivable, Recorded Investment, Past Due as a Percent of Gross Loans Financing Receivable, Recorded Investment, Past Due as a Percent of Gross Loans Schedule of Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table] Schedule of Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Beginning balance Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held Additions for the amounts related to the credit loss for which an other-than-temporary impairment was not previously recognized Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment Increases to the amount related to the credit loss for which other-than-temporary impairment was previously recognized Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses Credit losses realized for securities sold Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold Ending balance Rent expense Operating Leases, Rent Expense Number of derivative actions filed Loss Contingency, New Claims Filed, Number Number of derivative actions pending Loss Contingency, Pending Claims, Number Number of consolidated cases Loss Contingency, Pending Claims Consolidated, Number Loss Contingency, Pending Claims Consolidated, Number Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Pass Pass [Member] Special Mention Special Mention [Member] Substandard Substandard [Member] Doubtful Doubtful [Member] As of % of gross loans and leases Loans and Leases Receivable, Ratio of Grade Class to Gross Loans Loans and Leases Receivable, Ratio of Grade Class to Gross Loans Fair Value Option, Disclosures [Table] Fair Value Option, Disclosures [Table] Mortgage Servicing Rights Mortgage Servicing Rights [Member] Mortgage Servicing Rights [Member] Derivative Instruments, net Derivative Financial Instruments, Assets [Member] Life (in years) Measurement Input, Expected Term [Member] Projected Sales Profit of Underlying Loans Projected Profit of Underlying Loans [Member] Projected Profit of Underlying Loans Fair Value, Option, Quantitative Disclosures [Line Items] Fair Value, Option, Quantitative Disclosures [Line Items] Securities trading Debt Securities, Trading Derivative Assets Derivative, Fair Value, Net Securities trading, measurement input Debt Securities, Trading, Measurement Input Servicing asset, measurement input Servicing Asset, Measurement Input Derivative asset, net, measurement input Derivative Asset, Measurement Input Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 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 Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due Deferred tax assets: Deferred Tax Assets, Net [Abstract] Allowance for loan and lease losses and charge-offs Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses State taxes Deferred Tax Assets, State Taxes Stock-based compensation expense Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Unrealized net (gains) losses on securities Deferred Tax Assets, Unrealized (Gains) Losses on Available-for-Sale Securities, Net Deferred Tax Assets, Unrealized (Gains) Losses on Available-for-Sale Securities, Net Deferred bonus / vacation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Bonuses Securities impaired Deferred Tax Assets, Other Deferred loan fees Deferred Tax Assets, Deferred Expense, Deferred Financing Costs Deferred Tax Assets, Deferred Expense, Deferred Financing Costs Total deferred tax assets Deferred Tax Assets, Net Deferred tax liabilities: Deferred Tax Liabilities, Net [Abstract] FHLB stock dividend Deferred Tax Liabilities, Federal Home Loan Bank Stock Dividend Deferred Tax Liabilities, Federal Home Loan Bank Stock Dividend Other assets—prepaids Deferred Tax Liabilities, Prepaid Expenses Depreciation and amortization Deferred Tax Liabilities, Property, Plant and Equipment Total deferred tax liabilities Deferred Tax Liabilities, Net Net deferred tax asset Deferred Tax Asset (Liability), Net Deferred Tax Asset (Liability), Net Schedule of Gain (Loss) on Securities [Table] Schedule of Gain (Loss) on Securities [Table] Gain (Loss) on Securities [Line Items] Gain (Loss) on Securities [Line Items] Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract] Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract] Available-for-sale securities in loss position for less than 12 months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Available-for-sale securities in loss position for less than 12 months, Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Available-for-sale securities in loss position for more than 12 months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Available-for-sale securities in loss position for more than 12 months, Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Available-for-sale securities in loss position, Total, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Available-for-sale securities in loss position, Total, Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Common Stock, Number of Shares [Roll Forward] Common Stock, Number of Shares [Roll Forward] Common Stock, Number of Shares [Roll Forward] Common stock issued through option exercise or exchange, issued (in shares) Common stock issued through option exercise or exchange, outstanding (in shares) Common stock issued through public offering, issued and outstanding (in shares) Repurchase of treasury stock, issued (in shares) Treasury Stock, Shares, Retired Repurchase of treasury stock, outstanding (in shares) Common stock issued through grants of restricted stock units, issued (in shares) Common stock issued through grants of restricted stock units, outstanding (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Series A Preferred Stock Aggregate offering price Offering Price, Public Offering Offering Price, Public Offering Aggregate compensation payable to distribution agents as a percentage of gross sales price Stock Issuance Agreement, Stock Issuance Costs as a Percentage of the Gross Sales Price Stock Issuance Agreement, Stock Issuance Costs as a Percentage of the Gross Sales Price Maximum amount of expense reimbursable to distribution agents Stock Issuance Agreement, Maximum Amount to Reimbursable Expenses of Distribution Agents Stock Issuance Agreement, Maximum Amount to Reimbursable Expenses of Distribution Agents Maximum amount to reimbursable expenses of distribution agents, thereafter Stock Issuance Agreement, Maximum Amount to Reimbursable Expenses of Distribution Agents, Thereafter Stock Issuance Agreement, Maximum Amount to Reimbursable Expenses of Distribution Agents, Thereafter Stock repurchased program, authorized amount Stock Repurchase Program, Authorized Amount Share repurchased amount Purchase of treasury stock, outstanding (in shares) Average price of shares repurchased (in dollars per share) Treasury Stock Acquired, Average Cost Per Share Remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Preferred Stock, dividend rate percent Preferred Stock, Dividend Rate, Percentage Preferred Stock, remaining number of shares to be redeemed (in shares) Preferred Stock, Remaining Number Of Shares To Be Redeemed Preferred Stock, Remaining Number Of Shares To Be Redeemed Value of new issues of stock Stock Issued During Period, Value, New Issues Stock issued during period, shares, new issues (in shares) Stock Issued During Period, Shares, New Issues Payments of stock issuance costs Payments of Stock Issuance Costs Options surrendered in exchange (in shares) Conversion of Stock, Shares Converted Cash dividends on preferred stock (in dollars per share) Securities - Trading: Collateralized Debt Obligations Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Included in earnings—Sale of securities Sale Of Mortgage-backed Securities [Member] Sale Of Mortgage-backed Securities [Member] Included in earnings—Fair value gain(loss) on trading securities Fair Value Gain On Trading Securities [Member] Fair Value Gain On Trading Securities [Member] Included in earnings—Mortgage banking income Mortgage Banking [Member] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Opening Balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Transfers into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Total gains or losses for the period - Included in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Total gains or losses for the period - Included in other comprehensive income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases, Sales, Issues, Settlements [Abstract] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases, (Sales), Issuances, (Settlements) [Abstract] Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Issues Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Other-than-temporary impairment Closing balance Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease) Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Balance, beginning of period Provision for loan and lease loss Charged off Allowance for Loan and Lease Losses, Write-offs Transfers to held for sale Allowance for Loan and Leases, Transfer of Portfolio Loans and Leases to Held-for-sale Allowance for Loan and Leases, Transfer of Portfolio Loans and Leases to Held-for-sale Recoveries Allowance for Loan and Lease Loss, Recovery of Bad Debts Balance, end of period Interest income Interest Income, Operating Non-interest income (loss) Non-interest expense and tax benefit Noninterest Expense and Income Tax Benefit Noninterest Expense and Income Tax Benefit Income (loss) before dividends from subsidiary and equity in undistributed income of subsidiary Income (Loss), before Dividends from Subsidiary and Equity in Undistributed Income of Subsidiary Income (Loss), before Dividends from Subsidiary and Equity in Undistributed Income of Subsidiary Dividends from subsidiary Dividends from Subsidiary Dividends from Subsidiary Equity in undistributed earnings of subsidiary Equity in Undistributed Earnings of Subsidiary Equity in Undistributed Earnings of Subsidiary Comprehensive income Individually evaluated for impairment– general allowance Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment, General Allowance Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment, General Allowance Individually evaluated for impairment– specific allowance Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment, Specific Allowance Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment, Specific Allowance Collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Total ending allowance balance Financing Receivable, Allowance for Credit Losses Loans and leases individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Loans and leases collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment Principal loan and lease balance Unaccreted discounts and loan and lease fees Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums Total recorded investment in loans and leases Loans and Leases Receivable, Net of Deferred Income STOCK-BASED COMPENSATION Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] INCOME TAXES Income Tax Disclosure [Text Block] OFF-BALANCE-SHEET ACTIVITIES Off-balance Sheet Activities [Text Block] Off-balance Sheet Activities [Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Residential Portfolio Segment Residential Portfolio Segment [Member] Commercial Real Estate Portfolio Segment Commercial Real Estate Portfolio Segment [Member] Consumer Portfolio Segment Consumer Portfolio Segment [Member] Unallocated Financing Receivables Unallocated Financing Receivables [Member] Commercial Portfolio Segment Commercial Portfolio Segment [Member] Single family warehouse loans Warehouse Loans [Member] Warehouse Loans [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Allowance for loan and lease losses Total net loans and leases Single Family Mortgage Secured Single Family [Member] Commercial Real Estate Commercial Real Estate [Member] Real estate loans Adjustable Interest Rate LTV ratio Loans and Leases Receivable, Loan to Value Ratio Loans and Leases Receivable, Loan to Value Ratio Loan term Loans and Leases Receivable, Term Loans and Leases Receivable, Term Write offs on impaired loans Impaired Financing Receivable, Recorded Investment, Write-downs Impaired Financing Receivable, Recorded Investment, Write-downs Impaired loans with no specific allowance Impaired Financing Receivable, with No Related Allowance, Recorded Investment Average carrying value of impaired loans Impaired Financing Receivable, Average Recorded Investment Loans past due ninety days or more and still accruing Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Allowance allocated to restructured loans Allowance for Credit Losses, Change in Method of Calculating Impairment Number of new related party loans Loans and Leases Receivable, Related Parties, Number of Loans, Additions Loans and Leases Receivable, Related Parties, Number of Loans, Additions Principal payments received on related party loans Loans and Leases Receivable, Related Parties, Principal Payments Received During Period Loans and Leases Receivable, Related Parties, Principal Payments Received During Period Ending balance of related party loans Loans and Leases Receivable, Related Parties Interest earned on related party loans Loans and Leases Receivable, Related Parties, Interest Earned Loans and Leases Receivable, Related Parties, Interest Earned Percent of loans by interest rate type Loans and Leases Receivable, Loans by Interest Rate Type, Percent Loans and Leases Receivable, Loans by Interest Rate Type, Percent Purchased loans serviced by others, amount Loans, Participations Purchased, Serviced by Others Loans, Participations Purchased, Serviced by Others Purchased loans serviced by others, percent of portfolio Loans, Participations Purchased, Serviced by Others, Ratio to All Loans Loans, Participations Purchased, Serviced by Others, Ratio to All Loans Schedule of Common Stock Issued and Outstanding Schedule of Common Stock Outstanding Roll Forward [Table Text Block] Schedule of Common Stock Sold Through ATM Offering Schedule of Sale of Stock [Table Text Block] Schedule of Sale of Stock [Table Text Block] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Common Share Preferred stock dividends Dividends, Preferred Stock Average unvested RSUs (as revised for 2017 and 2016) (in shares) Diluted Earnings Per Common Share Average common shares issued and outstanding (as revised for 2017 and 2016) (in shares) Dilutive effect of stock options and average unvested RSUs (as revised for 2017 and 2016) (in shares) Charge-offs Adjustments for Error Corrections [Axis] Adjustments for Error Corrections [Axis] Adjustments for Error Correction [Domain] Adjustments for Error Correction [Domain] Immaterial Error Correction Immaterial Error Correction [Member] Immaterial Error Correction Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-09 Accounting Standards Update 2016-09 [Member] Loans held for investment sold, cash not received Proceeds from sale of loans held for sale Net cash provided by operating activities Proceeds from sale of loans held for investment Net cash used in investing activities ACQUISITIONS Business Combination Disclosure [Text Block] Schedule of Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Schedule of Deposits Schedule of Deposit Liabilities [Table Text Block] Schedule of Deposit Liabilities [Table Text Block] Schedule of Maturities For Total Time Deposits Schedule Of Maturities For Total Time Deposits [Table Text Block] Schedule Of Maturities For Total Time Deposits Net tax expense (benefit) for net unrealized gain (loss) from available-for-sale securities Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax Net tax expense (benefit) for other-than-temporary impairment on securities recognized in other comprehensive income Other than Temporary Impairment Loss, Investments, Portion in Other Comprehensive Loss, Tax, Attributable to Parent, Held-to-maturity Securities Net tax expense (benefit) for reclassification of net (gain) loss from available-for-sale securities included in income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Schedule of Revisions of Previously Issued Financial Statements For Correction of Immaterial Errors Schedule of Error Corrections and Prior Period Adjustments [Table Text Block] Range of FICO Score [Axis] Range of FICO Score [Axis] Range of FICO Score [Axis] Range of FICO Score [Domain] Range of FICO Score [Domain] Range of FICO Score [Domain] FICO greater than or equal to 770 FICO Score Greater Than or Equal to 770 [Member] FICO Score Greater Than or Equal to 770 [Member] FICO 715 - 769 FICO Score 715 - 769 [Member] FICO Score 715 - 769 [Member] FICO 700 - 714 FICO Score 700 - 714 [Member] FICO Score 700 - 714 [Member] FICO 660 - 699 FICO Score 660 - 699 [Member] FICO Score 660 - 699 [Member] FICO less than 660 FICO Score Less Than 660 [Member] FICO Score Less Than 660 [Member] Loan to Value Ratio Range [Axis] Loan to Value Ratio Range [Axis] Loan to Value Ratio Range [Axis] Loan to Value Ratio Range [Domain] Loan to Value Ratio Range [Domain] Loan to Value Ratio Range [Domain] LTV less than or equal to 60% Loan to Value Ratio Less than or Equal to 60% [Member] Loan to Value Ratio Less than or Equal to 60% [Member] LTV 61% - 70% Loan to Value Ratio 61% - 70% [Member] Loan to Value Ratio 61% - 70% [Member] LTV 71% - 80% Loan to Value Ratio 71% - 80% [Member] Loan to Value Ratio 71% - 80% [Member] LTV greater than 80% Loan to Value Ratio Greater than 80% [Member] Loan to Value Ratio Greater than 80% [Member] LTV less than or equal to 55% Loan to Value Less Than or Equal to 55% [Member] Loan to Value Less Than or Equal to 55% [Member] LTV 56% - 65% Loan to Value Ratio 56% - 65% [Member] Loan to Value Ratio 56% - 65% [Member] LTV 66% - 75% Loan to Value Ratio 66% - 75% [Member] Loan to Value Ratio 66% - 75% [Member] LTV 76% - 80% Loan to Value Ratio Range 76% - 80% [Member] Loan to Value Ratio Range 76% - 80% [Member] LTV less than or equal to 50% Loan to Value Less Than or Equal to 50% [Member] Loan to Value Less Than or Equal to 50% [Member] LTV 51% - 60% Loan to Value Ratio 51% - 60% [Member] Loan to Value Ratio 51% - 60% [Member] Loans collectively evaluated for impairment Interest only loans Loans and Leases Receivable, Interest-Only Loans and Leases Receivable, Interest-Only Option adjustable-rate mortgage loans Loans and Leases Receivable, Option Adjustable-Rate Loans and Leases Receivable, Option Adjustable-Rate SECURITIES Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Leasehold improvements Leasehold Improvements [Member] Furniture and fixtures Furniture and Fixtures [Member] Computer hardware and equipment Computer Equipment [Member] Software Computer Software, Intangible Asset [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Furniture, equipment and software, gross Property, Plant and Equipment, Gross Less accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Furniture, equipment and software—net Depreciation an amortization expense Depreciation, Depletion and Amortization, Nonproduction Gross Carrying Amount Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization