Receivables [Abstract] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Consumer loans [Member] Consumer Portfolio Segment [Member] Commercial real estate loans [Member] Commercial Real Estate Portfolio Segment [Member] Commercial and industrial loans [Member] Commercial Portfolio Segment [Member] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable, Type [Domain] Single family [Member] Residential Mortgage [Member] Home equity and other [Member] Home Equity Line of Credit [Member] Non-owner occupied commercial real estate [Member] Non Owner Occupied Commercial Real Estate [Member] Non Owner Occupied Commercial Real Estate [Member] Multifamily [Member] Multifamily Residential [Member] Residential multifamily property. Construction/land development [Member] Construction Loans [Member] Owner occupied commercial real estate [Member] Owner Occupied Commercial Real Estate [Member] Owner Occupied Commercial Real Estate [Member] Commercial business [Member] Commercial Loan [Member] Credit Quality Indicator [Axis] Internal Credit Assessment [Axis] Financing Receivable, by Credit Quality Indicator [Domain] Internal Credit Assessment [Domain] Pass [Member] Pass [Member] Watch [Member] Watch [Member] A category of financing receivables that has a remote risk of default but is exhibiting deficiency or weakness that requires monitoring. Special mention [Member] Special Mention [Member] Substandard [Member] Substandard [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring [Member] Fair Value, Measurements, Recurring [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract] Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract] Designated loan grades by loan portfolio segment and loan class. Total loans Loans and Leases Receivable, before Fees, Gross Fair value of loans held for investment Loans Receivable, Fair Value Disclosure Statement of Comprehensive Income [Abstract] Net income Net Income (Loss) Attributable to Parent Other comprehensive (loss) income, net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized gain (loss) on investment securities available for sale: Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract] Unrealized holding (loss) gain arising during the period, net of tax (benefit) expense of ($642) and $1,848 for the three months ended June 30, 2018 and 2017, and ($3,300) and $2,887 for the six months ended June 30, 2018 and 2017, respectively Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Reclassification adjustment for net gains included in net income, net of tax expense of $4 and $193 for the three months ended June 30, 2018 and 2017, and $50 and $195 for the six months ended June 30, 2018 and 2017, respectively Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Other comprehensive (loss) income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Subsequent Events [Abstract] SUBSEQUENT EVENTS Subsequent Events [Text Block] Banking and Thrift [Abstract] Interest expense on deposits Interest Expense, Deposits [Abstract] NOW accounts Interest Expense, Negotiable Order of Withdrawal (NOW) Deposits Statement savings accounts Interest Expense, Savings Deposits Money market accounts Interest Expense, Money Market Deposits Certificates of deposit Interest Expense, Time Deposits Interest expense on deposits, Total Interest Expense, Deposits Investments, Debt and Equity Securities [Abstract] INVESTMENT SECURITIES Marketable Securities [Table Text Block] Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivables Past Due [Table] 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 to 59 days past due [Member] Financing Receivables, 30 to 59 Days Past Due [Member] 60 to 89 days past due [Member] Financing Receivables, 60 to 89 Days Past Due [Member] 90 days or more past due [Member] Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Recorded Investment, Past Due [Line Items] Total past due Financing Receivable, Recorded Investment, Past Due Current Financing Receivable, Recorded Investment, Current 90-days or more past due and still accruing Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Mortgage Banking [Abstract] Mortgage Loans on Real Estate Schedule [Table] Mortgage Loans on Real Estate Schedule [Table] Class of Financing Receivable, Type [Domain] Multifamily DUS [Member] Multifamily DUS [Member] Multifamily DUS - commercial mortgage. SBA [Member] SBA [Member] SBA [Member] CRE-Non-DUS [Member] Commercial Mortgage, excluding DUS [Member] Multifamily/commercial Mortgage, excluding DUS. Mortgage Loans on Real Estate [Line Items] Mortgage Loans on Real Estate [Line Items] Loans sold Mortgage Loans on Real Estate, Cost of Mortgages Sold Loans held for investment Loans and Leases Receivable, Net Amount Fair Value Disclosures [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Loans receivable [Member] Loans Receivable [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Weighted average [Member] Weighted Average [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Transfers between levels of fair value hierarchy Fair Value Measurement Transfers Between With Levels of Hierarchy for Assets and Liabilities Held Fair value measurement transfers between with levels of hierarchy for assets and liabilities held. Adjustments to appraisal value for commercial loans held for investment collateralized by real estate Fair Value Inputs, Comparability Adjustments Range of stated value (as a percent) Fair Value Inputs, Discount for Lack of Marketability Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Federal Home Loan Bank Advances [Member] Federal Home Loan Bank Advances [Member] Federal Reserve Bank Advances [Member] Federal Reserve Bank Advances [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Washington WASHINGTON California CALIFORNIA Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Number of portfolio segments Number of Operating Segments Loans pledged as collateral Loans Pledged as Collateral Concentration percentage Percentage of Portfolio by State and Property Type for Loan Classes Percentage of portfolio by state and property type for the loan classes. Percentage of loan portfolio Percentage of Loan Portfolio Percentage of total loan portfolio. Allowance for unfunded commitments Allowance For Unfunded Commitments Allowance For Unfunded Commitments Accrual Financing Receivable Recorded Investment Performing Financing receivable that is considered to be performing and are still accruing interest. Nonaccrual Financing Receivable, Recorded Investment, Nonaccrual Status Total loans held for investment Security pledged under repurchase agreement Pledged Financial Instruments, Not Separately Reported, Securities for Repurchase Agreements Tax exempt interest income on available-for-sale securities Interest Income, Securities, Operating, Tax Exempt DEPOSITS Deposit Liabilities Disclosures [Text Block] Allowance for Doubtful Accounts Receivable [Roll Forward] Allowance for Doubtful Accounts Receivable [Roll Forward] Beginning Balance Financing Receivable, Allowance for Credit Losses Provision for credit losses Provision for Loan, Lease, and Other Losses (Charge-offs) recoveries, net Financing Receivable, Allowance for Credit Losses, Write-downs (Recovery) Financing Receivable, Allowance for Credit Losses, Write-downs (Recovery) Ending Balance MORTGAGE BANKING OPERATIONS Mortgage Banking Operations [Text Block] Mortgage banking operation. Small business administration (SBA) [Member] Loans held for sale Loans Receivable Held-for-sale, Net, Not Part of Disposal Group Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Residential mortgage-backed securities [Member] Residential Mortgage Backed Securities [Member] Commercial mortgage-backed securities [Member] Commercial Mortgage Backed Securities [Member] Municipal bonds [Member] Municipal Bonds [Member] Collateralized mortgage obligations [Member] Collateralized Mortgage Obligations [Member] Residential collateralized mortgage obligations [Member] Collateralized Residential Mortgage Obligations [Member] The category includes multiclass, pay-through securitizations collateralized by residential mortgages secured by assets, such as automobiles and boats, which are generally structured so that the collections of principal and interest due from the underlying debtors are paid to the holders of the CMO. Commercial collateralized mortgage obligations [Member] Collateralized Commercial Mortgage Obligations [Member] The category includes multiclass, pay-through securitizations collateralized by commercial mortgages secured by assets, such as automobiles and boats, which are generally structured so that the collections of principal and interest due from the underlying debtors are paid to the holders of the CMO. Corporate debt securities [Member] Corporate Debt Securities [Member] US Treasury securities [Member] US Treasury Securities [Member] Agency debentures [Member] Agency Securities [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] AVAILABLE FOR SALE Available for Sale Securities Amortized Cost Basis and Gross Unrealized Gain Loss [Abstract] Available for sale securities amortized cost basis and gross unrealized gain loss. Amortized cost Available-for-sale Debt Securities, Amortized Cost Basis Gross unrealized gains Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax Gross unrealized losses Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax Fair value Available-for-sale Securities, Debt Securities HELD TO MATURITY Held-to-maturity Securities [Abstract] Amortized cost Held-to-maturity Securities Gross unrealized gains Held-to-maturity Securities, Accumulated Unrecognized Holding Gain Gross unrealized losses Held-to-maturity Securities, Accumulated Unrecognized Holding Loss Fair value Held-to-maturity Securities, Fair Value Derivative Instruments and Hedging Activities Disclosure [Abstract] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract Type [Domain] Derivative Contract [Domain] Forward sale commitments [Member] Forward Contracts [Member] Interest rate swaptions [Member] Interest Rate Swaption [Member] Interest rate lock and purchase loan commitments [Member] Interest Rate Lock Commitments [Member] Interest rate swaps [Member] Interest Rate Swap [Member] Eurodollar futures [Member] Eurodollar Future [Member] Concentration of Credit or Market Risk [Axis] Concentration of Credit or Market Risk [Axis] Fair Value, Concentration of Risk, Disclosure Items [Domain] Fair Value, Concentration of Risk, Disclosure Items [Domain] Concentration of credit risk, master netting arrangements [Member] Fair Value, Concentration of Credit Risk, Master Netting Arrangements [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Notional amount Derivative, Notional Amount Derivatives before netting, Derivative assets Derivative Asset, Fair Value, Gross Asset Netting adjustments, Derivative assets Derivative Asset Fair Value Amount Offset Against Other Derivatives The amount as of the balance sheet date of the fair value of derivative assets that in accordance with the entity's accounting policy was offset against other derivative contracts under a master netting arrangement. Derivative assets Derivative Asset Derivatives before netting, Derivative Liabilities Derivative Liability, Fair Value, Gross Liability Netting adjustments, Derivative liabilities Derivative Liability Fair Value Amount Offset Against Other Derivatives The amount as of the balance sheet date of the fair value of derivative liabilities that in accordance with the entity's accounting policy were offset against other derivative contracts under a master netting arrangement. Derivative liabilities Derivative Liability Cash collateral, as part of netting adjustment Right to reclaim cash in excess of fair value of derivative liability The right to reclaim cash that is in excess of fair value of derivative liability. Deposit balances, including stated rates Deposits, by Type [Abstract] Noninterest-bearing accounts Noninterest-bearing Deposit Liabilities NOW accounts, 0.00% to 1.00% at June 30, 2018 and 0.00% to 1.98% at December 31, 2017 Deposits, Negotiable Order of Withdrawal (NOW) Statement savings accounts, due on demand, 0.05% to 1.13% at June 30, 2018 and December 31, 2017 Deposits, Savings Deposits Money market accounts, due on demand, 0.00% to 1.92% at June 30, 2018 and 0.00% to 1.80% at December 31, 2017 Deposits, Money Market Deposits Certificates of deposit, 0.10% to 3.80% at June 30, 2018 and 0.05% to 3.80% at December 31, 2017 Time Deposits Deposits, Total Deposits Schedule of Short-term Debt [Table] Schedule of Short-term Debt [Table] Short-term Debt [Line Items] Short-term Debt [Line Items] Weighted Average Rate, NOW accounts (as a percent) Weighted Average Rate Domestic Deposit, Notice of Withdrawal Weighted Average Rate, Statement savings accounts (as a percent) Weighted Average Rate Domestic Deposit, Savings Weighted Average Rate, Money market accounts (as a percent) Weighted Average Rate Domestic Deposit, Money Market Weighted Average Rate, Certificates of deposit (as a percent) Weighted Average Rate Domestic Deposit, Certificates of Deposit Commitments and Contingencies Disclosure [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Undisbursed construction loan funds [Member] Undisbursed construction loan funds [Member] Undisbursed construction loan funds Home equity and business banking credit lines [Member] Home Equity and Business Banking Credit Lines [Member] Home Equity and Business Banking Credit Lines Loss sharing relationship [Member] Loss Sharing Relationship [Member] A loss sharing relationship that is accounted for as a guarantee under U.S. GAAP. Credit risk [Member] Credit Risk [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Representations and warranties reserve for loan receivables [Member] Representations and Warranties Reserve for Loan Receivables [Member] A reserve for expected or probable losses from the repurchase of loan receivables related to certain representations and warranties made at the time the loan was sold. Loss Contingencies [Line Items] Loss Contingencies [Line Items] Unfunded loan commitments Credit of Unfunded Commitments Credit of unfunded commitments. Unfunded commitment balance of loans sold on a servicing-retained basis Guarantor Obligations, Maximum Exposure, Undiscounted UPB of loans sold through DUS Loans sold through DUS Unpaid principal of Loans sold through DUS program. Reserve liability related to multifamily DUS program Reserve liability related to multifamily DUS Program Reserve liability related to multifamily DUS Program Losses incurred - related to DUS Loss Contingency, Loss in Period Reserve liability related to mortgage repurchase Loss Contingency Accrual Number of material claims pending Loss Contingency, Pending Claims, Number Stockholders' Equity Note [Abstract] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Accumulated Other Comprehensive Income (Loss) [Member] AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Beginning balance Stockholders' Equity Attributable to Parent Other comprehensive (loss) income before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Amounts reclassified from accumulated other comprehensive income (loss) Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Ending balance Weighted-average interest rate on certificates of deposit (as a percent) Time Deposits Weighted Average Interest Rate Time deposits weighted average interest rate. Time Deposits, at or Above FDIC Insurance Limit Time Deposits, at or Above FDIC Insurance Limit Brokered deposits Interest-bearing Domestic Deposit, Brokered Revenue Recognition [Abstract] Percentage of revenue streams in scope with ASU 2014-09 Revenue Recognition, Percentage Of Revenue In Scope With Accounting Standard Update 2014-09 Revenue Recognition, Percentage Of Revenue In Scope With Accounting Standard Update 2014-09 Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Common Stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Retained Earnings [Member] Statement [Line Items] Statement [Line Items] Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity Attributable to Parent [Abstract] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock shares outstanding, beginning balance Common Stock, Shares, Outstanding Share-based compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition Common stock issued Stock Issued During Period, Value, New Issues Common stock issued, shares Stock Issued During Period, Shares, New Issues Other comprehensive income (loss) Common stock shares outstanding, ending balance Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Loans held for investment Accounts, Notes, Loans and Financing Receivable, Classified [Abstract] Total loans before fees and costs Net deferred loan fees and costs Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums Total loans Loans and Leases Receivable, Gross Allowance for loan losses Loans and Leases Receivable, Allowance Loans held for investment Fair Value Hierarchy [Domain] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Level 3 [Member] Collateralized mortgage obligations residential [Member] Collateralized Mortgage Obligations Residential [Member] Collateralized mortgage obligations residential. Collateralized mortgage obligations commercial [Member] Collateralized Mortgage Obligations Commercial [Member] Collateralized mortgage obligations commercial. US treasury securities [Member] Us Treasury Collateralized Mortgage Obligations [Member] US treasury collateralized mortgage obligations. Assets: Assets, Fair Value Disclosure [Abstract] Investment securities available for sale Mortgage servicing rights Servicing Asset at Fair Value, Amount Fair value of loans held for sale Loans Held-for-sale, Fair Value Disclosure Derivative assets Total assets Assets, Fair Value Disclosure Liabilities: Liabilities, Fair Value Disclosure [Abstract] Derivative liabilities Total liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure Revenue Revenue from Contract with Customer [Text Block] ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Comprehensive Income (Loss) Note [Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Financial Instrument [Axis] 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 rate lock and purchase loan commitments, net Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Fair value inputs, fall-out factor Fair Value Inputs, Fall Out Factor Percentage of interest rate lock commitment contractuals not expected to reach funding. Fair value inputs, initial value of servicing Fair Value Inputs, Initial Value of Servicing The initial value of the servicing rights embedded in an interest rate lock commitment. Constant prepayment rate (CPR) Fair Value Inputs, Prepayment Rate Discount rate Fair Value Inputs, Discount Rate Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Number of days past due for consumer loans TDR to be re-default Trouble Debt Restructuring, Re-Default, Number Of Days Past Due, Consumer Trouble Debt Restructuring, Re-Default, Number of Days Past Due, Consumer Number of days past due for commercial loans TDR to be re-default Trouble Debt Restructuring, Re-Default, Number Of Days Past Due, Commercial Trouble Debt Restructuring, Re-Default, Number Of Days Past Due, Commercial TDR balances which have subsequently re-defaulted Redefaulted Troubled Debt Restructurings on Financing Receivable [Abstract] Re-defaulted troubled debt restructurings on financing receivable. Number of TDR loan relationships that re-defaulted Financing Receivable, Modifications, Subsequent Default, Number of Contracts Recorded investment Financing Receivable, Modifications, Subsequent Default, Recorded Investment LOANS AND CREDIT QUALITY Financing Receivables [Text Block] Notional amount and fair value for derivatives Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Fair value, concentration of risk Fair Value, Concentration of Risk [Table Text Block] Net gains (losses) recognized on economic hedge derivatives Derivative Instruments, Gain (Loss) [Table Text Block] Restructuring and Related Activities [Abstract] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Restructuring Type [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Facility related costs [Member] Facility Closing [Member] Personnel related costs [Member] Employee Severance [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Beginning balance Restructuring Reserve Restructuring charges (recoveries) Restructuring Charges Costs paid or otherwise settled Payments for Restructuring Ending balance Key economic assumptions and the sensitivity of the current fair value for single family MSRs Fair value of single family MSR Expected weighted-average life Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Weighted Average Life Constant prepayment rate (as a percent) Fair Value Input Prepayment Rate Rate at which loans or a loan portfolio are expected to prepay principal balances, used as an input to measure fair value. Impact on fair value of 25 basis points adverse change in interest rates Impact on Fair Value of Twenty Five Basis Points Decrease Impact on fair value of 25 basis points decrease. Impact on fair value of 50 basis points adverse change in interest rates Impact on Fair Value of Fifty Basis Points Decrease Impact on fair value of 50 basis points decrease. Discount rate (as a percent) Fair Value Input Discount Rate Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. Impact on fair value of 100 basis points increase Impact on Fair Value of Hundred Basis Points Increase Impact on fair value of 100 basis points increase. Impact on fair value of 200 basis points increase Impact on Fair Value of Two Hundred Basis Points Increase Impact on fair value of 200 basis points increase. Single family MSRs [Member] Single family residential mortgage servicing rights [Member] Single family mortgage servicing rights Servicing Assets at Fair Value [Line Items] Servicing Assets at Fair Value [Line Items] Servicing Asset at Fair Value, Amount [Roll Forward] Servicing Asset at Fair Value, Amount [Roll Forward] Beginning balance Originations Servicing Asset at Fair Value, Additions Purchases Servicing Asset at Fair Value Additions Purchase Servicing asset at fair value additions purchase. Sale of single family MSRs Servicing Asset at Fair Value, Disposals Changes due to modeled amortization Changes in Fair Value of Mortgage Servicing Rights Due to Modeled Amortization Changes in the fair value of mortgage servicing rights due to modeled amortization. Net additions and amortization Servicing Asset at Fair Value, Additions and Amortization, Net Servicing Asset at Fair Value, Additions and Amortization, Net Changes in fair value of MSR due to changes in market inputs and/or model updates Servicing Asset at Fair Value, Other Changes in Fair Value Ending balance Tax expense (benefit) on unrealized holding gain (loss) on securities Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Tax expense (benefit) on reclassification adjustment for net gain on securities included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Document and Entity Information [Abstract] Document Type Document Type Entity Registrant Name Entity Registrant Name Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding 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 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 Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Level 1 [Member] Level 2 [Member] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Carrying value [Member] Reported Value Measurement [Member] Fair value [Member] 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] Assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Investment securities held to maturity Loans held for sale - transferred from held for investment Portfolio loans transferred to held for sale, fair value disclosure Portfolio loans transferred to held for sale, fair value disclosure Loans held for sale, fair value option Federal Home Loan Bank Stock Investment in Federal Home Loan Bank Stock, Fair Value Disclosure Liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Time deposits Deposits, Fair Value Disclosure Federal Home Loan Bank advances Federal Home Loan Bank Borrowings, Fair Value Disclosure Other borrowings Other Borrowings, Fair Value Disclosure Other Borrowings, Fair Value Disclosure Long-term debt Debt Instrument, Fair Value Disclosure Certificates of deposit outstanding Time Deposits, Rolling Year Maturity [Abstract] Within one year Time Deposit Maturities, Next Rolling Twelve Months One to two years Time Deposit Maturities, Rolling Year Two Two to three years Time Deposit Maturities, Rolling Year Three Three to four years Time Deposit Maturities, Rolling Year Four Four to five years Time Deposit Maturities, Rolling Year Five Thereafter Time Deposit Maturities, after Rolling Year Five Total Earnings Per Share [Abstract] Weighted average shares: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic weighted average number of shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Dilutive effect of outstanding common stock equivalents (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Diluted weighted-average number of shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Earnings per share: Earnings Per Share, Basic and Diluted [Abstract] Basic earnings per share (in dollars per share) Earnings Per Share, Basic Diluted income per share (in dollars per share) Earnings Per Share, Diluted Aggregate number of common stock equivalents and unvested restricted stock (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Servicing asset [Member] Servicing Asset [Member] Servicing Asset [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Product concentration risk [Member] Product Concentration Risk [Member] Early buyout loans [Member] Early Buyout Loans [Member] Loans for which the entity has the unilateral right to repurchase out of a mortgage pool. Such loans accounted for as a repurchase. Multifamily DUS [Member] Servicing Advances Servicing Advances Advances made as part of the entity's obligations as a servicer. Loans Receivable, in Ginnie Mae pool Loans Receivable, Net Unpaid principal balance of mortgage serviced loans Servicing Asset, Unpaid Principal Balance Servicing Asset, Unpaid Principal Balance Percentage of concentration Concentration Risk, Percentage Changes in fair value due to changes in model inputs and/or assumptions Weighted average life of company's multifamily MSRs Expected Weighted Average Life of MSR Expected Weighted Average Life of MSR Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Cash and cash equivalents (including interest-earning instruments of $126,083 and $30,268) Cash and Cash Equivalents, at Carrying Value Investment securities (includes $829,422 and $846,268 carried at fair value) Marketable Securities Loans held for sale (includes $527,088 and $577,313 carried at fair value) Loans held for investment (net of allowance for loan losses of $39,480 and $37,847; includes $4,187 and $5,477 carried at fair value) Mortgage servicing rights (includes $245,744 and $258,560 carried at fair value) Servicing Asset Other real estate owned Other Real Estate, Foreclosed Assets, and Repossessed Assets Federal Home Loan Bank stock, at cost Federal Home Loan Bank Stock Premises and equipment, net Property, Plant and Equipment, Net Goodwill Goodwill Other assets Other Assets Total assets Assets LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Liabilities: Liabilities [Abstract] Deposits Federal Home Loan Bank advances Advances from Federal Home Loan Banks Accounts payable and other liabilities Accounts Payable and Accrued Liabilities Other borrowings Other Borrowings Long-term debt Long-term Debt Total liabilities Liabilities Commitments and contingencies (Note 7) Commitments and Contingencies Shareholders’ equity: Preferred stock, no par value, authorized 10,000 shares, issued and outstanding, 0 shares and 0 shares Preferred Stock, Value, Issued Common stock, no par value, authorized 160,000,000 shares, issued and outstanding, 26,978,229 shares and 26,888,288 shares Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total shareholders' equity Total liabilities and shareholders' equity Liabilities and Equity Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Multifamily originations [Member] Multifamily originations [Member] Multifamily originations. Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Projected Amortization Expense [Abstract] Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Remainder of 2018 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Five 2023 and thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Carrying value of multifamily MSR Servicing Asset at Amortized Cost Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Forecast [Member] Scenario, Forecast [Member] Restructuring charges EARNINGS PER SHARE Earnings Per Share [Text Block] Loans held for investment Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Activity in allowance for credit losses Allowance for Credit Losses on Financing Receivables [Table Text Block] Allowance for credit losses by loan portfolio segment and loan class Allowance for Credit Losses by Loan Portfolio Segment and Loan Class [Table Text Block] Allowance for credit losses by loan portfolio segment and loan class. Recorded investment in loans by Impairment Methodology Loans by Impairment Methodology [Table Text Block] Gives the balance of loans collectively evalulated for impairment and loans individually evaluated for impairment. Impaired loans by loan portfolio segment and loan class Impaired Financing Receivables [Table Text Block] Average recorded investment in impaired loans Average Recorded Investment of Impaired Loans [Table Text Block] The average recorded investment of impaired loans held for investment, by loan class. Designated loan grades by loan portfolio segment and loan class Financing Receivable Credit Quality Indicators [Table Text Block] Past due loans by portfolio segment and loan class Past Due Financing Receivables [Table Text Block] Performing and non-performing loan balances by portfolio segment and loan class Performing and Nonaccrual Loan Balances by Loan Portfolio Segment and Loan Class [Table Text Block] Performing and nonaccrual loan balances by loan portfolio segment and loan class. TDR activity by loan portfolio segment and loan class Troubled Debt Restructurings on Financing Receivables [Table Text Block] TDR balances that subsequently re-defaulted Redefaulted Troubled Debt Restructurings on Financing Receivables [Table Text Block] Redefaulted troubled debt restructurings on financing receivables. Derivatives designated as a hedging instrument Derivative, Fair Value, Net Mortgage Repurchase Losses [Roll Forward] Loss Contingency Accrual [Roll Forward] Balance, beginning of period Additions (reductions), net of adjustments Loss Contingency Accrual, Provision Realized losses Loss Contingency Accrual, Payments Balance, end of period Interest-earning instruments Interest-bearing Deposits in Banks and Other Financial Institutions Investment securities held at fair value Investments, Fair Value Disclosure Allowance for losses on loans held for investment Preferred stock, par value (in dollars per share) Preferred Stock, No Par Value Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, par value (in dollars per share) Common Stock, No Par Value Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Proceeds Proceeds from Sale of Available-for-sale Securities, Debt Gross gains Available-for-sale Securities, Gross Realized Gains Gross losses Available-for-sale Securities, Gross Realized Losses Accounting Policies [Abstract] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Schedule of accumulated other comprehensive income (loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Reclassification out of accumulated other comprehensive income (loss) Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Average recorded investment Impaired Financing Receivable, Average Recorded Investment Interest Income Recognized Impaired Financing Receivable, Interest Income, Accrual Method Gain On Mortgage Loan Origination And Sale Activities [Table] Gain On Mortgage Loan Origination And Sale Activities [Table] Schedule detailing gain on mortgage loan origination and sale activities. Gain on mortgage loan origination and sale activities [Line Items] Gain on mortgage loan origination and sale activities [Line Items] Gain on mortgage loan origination and sale activities [Line Items] Servicing value and secondary market gains Gain (Loss) on Sale of Mortgage Loans Loan origination and funding fees Loan Origination and Funding Fees Loan origination and funding fees received. Net gain on loan origination and sale activities Net Gains Losses on Mortgage Loan Origination and Sales Activities Net gain on mortgage loan origination and sale activities. Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Gains and Losses on Available-for-Sale Securities [Member] Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member] Reclassification out of Accumulated Other Comprehensive Income [Member] Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] Gain on sale of investment securities available for sale Available-for-sale Securities, Gross Realized Gain (Loss) Income tax expense Income Tax Expense (Benefit) Total, net of tax Federal Home Loan Bank to secure borrowings Pledged Financial Instruments, Not Separately Reported, Securities for Federal Home Loan Bank Washington and California State to secure public deposits Pledged Assets Not Separately Reported Securities Pledged For State and Local Governments Pledged Assets Not Separately Reported Securities Pledged For State and Local Governments. Securities pledged to secure derivatives in a liability position Pledged Financial Instruments, Securities pledged to secure derivatives in a liability position Pledged Financial Instruments, Securities pledged to secure derivatives in a liability position Other securities pledged Pledged Assets Separately Reported Other Securities Pledged Pledged Assets Separately Reported Other Securities Pledged Total securities pledged as collateral Pledged Financial Instruments, Not Separately Reported, Securities Single family [Member] Single Family Residential [Member] Single family residential. Commercial loans [Member] U.S. government and agency [Member] Single family other [Member] Single Family Residential Mortgage Loans, Excluding U.S. Government Agency Mortgage Backed Securities [Member] Single family residential mortgage loans, excluding loans held in U.S. Government Agency mortgage pools. Other [Member] Commercial Mortgage, Other [Member] Commercial Mortgage, Other [Member] Loans serviced for others Continuing Involvement with Transferred Financial Assets, Principal Amount Outstanding DERIVATIVES AND HEDGING ACTIVITIES Derivative Instruments and Hedging Activities Disclosure [Text Block] AVAILABLE FOR SALE Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract] Less than 12 months, Gross unrealized losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Less than 12 months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Twelve months or more, Gross unrealized losses Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Twelve months or more, Fair value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Total, Gross unrealized losses Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Total, Fair value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Less than 12 months, Gross unrealized losses Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Less than 12 months, Fair value Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Twelve months or more, Gross unrealized losses Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Twelve months or more, Fair value Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Total, Gross unrealized losses Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss Total, Fair value Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value Statement of Cash Flows [Abstract] 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] Depreciation, amortization and accretion Depreciation, Amortization and Accretion, Net Net fair value adjustment and gain on sale of loans held for sale Increase (Decrease) in Loans Held-for-sale Fair value adjustment of loans held for investment Gains Losses on Loans Held for Investment Gains losses on loans held for investment. Origination of mortgage servicing rights Increase (Decrease) in Mortgage Servicing Rights Increase (Decrease) in Mortgage Servicing Rights Change in fair value of mortgage servicing rights Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions Net gain on sale of investment securities Net loss (gain) on sale of loans originated as held for investment Gain (Loss) on Sale of Loans and Leases Net fair value adjustment, gain on sale and provision for losses on other real estate owned Net fair value adjustment, gain (loss) and provision on Other Real Estate Owned Net fair value adjustment, gain (loss) and provision on Other Real Estate Owned Loss on disposal of fixed assets Gain (Loss) on Disposition of Assets Loss on lease abandonment Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Net deferred income tax (benefit) expense Increase (Decrease) in Deferred Income Taxes Share-based compensation expense Share-based Compensation Origination of loans held for sale Payments for Origination of Mortgage Loans Held-for-sale Proceeds from sale of loans originated as held for sale Proceeds from Sale of Loans Held-for-sale Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Decrease (increase) in accounts receivable and other assets Increase (decrease) in accounts receivable and other assets Increase or decrease in accounts receivable and other assets. Increase (decrease) in accounts payable and other liabilities Increase (Decrease) in Accounts Payable and Other Liabilities Increase (decrease) in accounts payable and other 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] Purchase of investment securities Payments to Acquire Investments Proceeds from sale of investment securities Principal repayments and maturities of investment securities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Proceeds from sale of other real estate owned Proceeds from Sale of Other Real Estate Proceeds from sale of loans originated as held for investment Proceeds from Sale of Loans Held-for-investment Proceeds from sale of mortgage servicing rights Proceeds from Sale of Mortgage Servicing Rights (MSR) Mortgage servicing rights purchased from others Payments to Acquire Mortgage Servicing Rights (MSR) Capital expenditures related to other real estate owned Capital Expenditures Related to Other Real Estate Owned Capital expenditures related to other real estate owned. Origination of loans held for investment and principal repayments, net Payments for (Proceeds from) Loans and Leases Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment 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] Increase in deposits, net Increase (Decrease) in Deposits Proceeds from Federal Home Loan Bank advances Proceeds from Federal Home Loan Bank Borrowings Repayment of Federal Home Loan Bank advances Payments for Federal Home Loan Bank Advances Proceeds from federal funds purchased and securities sold under agreements to repurchase Proceeds from Federal Funds Purchased and Securities Sold under Agreements to Repurchase Proceeds from Federal Funds Purchased and Securities Sold under Agreements to Repurchase Repayment of federal funds purchased and securities sold under agreements to repurchase Payments for Securities Sold under Agreements to Repurchase The cash outflow from investments sold under the agreement to repurchase such investment. Proceeds from line of credit draws Proceeds from Lines of Credit Proceeds from Federal Home Loan Bank stock Payments for (Proceeds from) Federal Home Loan Bank Stock Purchase of Federal Home Loan Bank stock Payments to Acquire Federal Home Loan Bank Stock Proceeds from stock issuance, net Proceeds from Issuance of Common Stock Payments from equity raise Proceeds from (Repurchase of) Equity Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities NET INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, cash equivalents and restricted cash, beginning of year Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents and restricted cash, end of period Less restricted cash included in other assets Restricted Cash and Cash Equivalents CASH AND CASH EQUIVALENTS AT END OF PERIOD SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION: Supplemental Cash Flow Information [Abstract] Cash paid during the period for: Cash Paid During Year for [Abstract] Cash paid during the period for. Interest paid Interest Paid Federal and state income taxes refunded, net Income Taxes Paid, Net Non-cash activities: Noncash Investing Activities [Abstract] Noncash investing activities. Loans held for investment foreclosed and transferred to other real estate owned Loans Held for Investment Foreclosed and Transferred to Other Real Estate Owned Loans held for investment foreclosed and transferred to other real estate owned. Loans transferred from held for investment to held for sale Transfer of Portfolio Loans and Leases to Held-for-sale Loans transferred from held for sale to held for investment Transfer of Loans Held-for-sale to Portfolio Loans Ginnie Mae loans recognized with the right to repurchase (reduction in), net Loans Recognized with Right to Repurchase GNMA loans recognized with the right to repurchase, net. Receivable from sale of mortgage servicing rights Receivable from sale of mortgage servicing rights Receivable from sale of mortgage servicing rights RESTRUCTURING Restructuring and Related Activities Disclosure [Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Recent Accounting Developments New Accounting Pronouncements, Policy [Policy Text Block] Loans and Leases Receivable Finance, Loans and Leases Receivable, Policy [Policy Text Block] Allowance for Loan and Lease Losses Financing Receivable, Allowance for Credit Losses, Policy for Uncollectible Amounts [Policy Text Block] Derivatives and Hedging Activities Derivatives, Policy [Policy Text Block] Mortgage Banking Operations Loans and Leases Receivable, Mortgage Banking Activities, Policy [Policy Text Block] Fair Value Measurement Fair Value Measurement, Policy [Policy Text Block] Revenue Revenue Recognition, Policy [Policy Text Block] Restructuring reserve rollforward Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Financing Receivable, Modification, Type of Concession [Axis] Financing Receivable, Modification, Type of Concession [Axis] Describes the type of concession given by the entity to debtor. Financing Receivable, Concessions [Domain] Financing Receivable, Concessions [Domain] Concessions given to a borrower under a loan modification. Interest rate reduction [Member] Interest Rate Reduction [Member] Interest rate reduction. Payment restructure [Member] Payment Restructure [Member] Payment restructure. Number of loan modifications - TDR Financing Receivable, Modifications, Number of Contracts Recorded investment - TDR Financing Receivable, Modifications, Recorded Investment at Period End Financing Receivable, Modifications, Recorded Investment at Period End Related charge-offs - TDR Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down Financing Receivable, Impaired [Line Items] Impaired loans by loan portfolio segment and loan class [Abstract] Impaired Loans by Loan Portfolio Segment and Loan Class [Abstract] Impaired loans by loan portfolio segment and loan class. Recorded investment with no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Recorded Investment Recorded investment with related allowance recorded Impaired Financing Receivable, with Related Allowance, Recorded Investment Total recorded investment Impaired Financing Receivable, Recorded Investment Unpaid principal balance with no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Unpaid principal balance with related allowance recorded Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Total unpaid principal balance Impaired Financing Receivable, Unpaid Principal Balance Related allowance Impaired Financing Receivable, Related Allowance Performing TDRs Financing Receivable, Modifications, Performing, Recorded Investment The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings and are currently performing in accordance with the contractual terms of the modification. Servicing contracts [Member] Servicing Contracts [Member] Servicing fees and other Servicing Fees and Other Servicing fees and other. Changes in fair value of single family MSRs due to modeled amortization Amortization of multifamily and SBA MSRs Amortization of Mortgage Servicing Rights (MSRs) Net servicing income Net Servicing Income Servicing and other related fees, net of payments. Net (loss) gain from derivatives economically hedging MSR Derivative, Gain (Loss) on Derivative, Net Mortgage servicing rights, risk management Mortgage servicing rights, risk management Changes in MSR fair value due to changes in model inputs and assumptions, net of risk management derivatives. Loan servicing income Bank Servicing Fees Servicing Asset at Amortized Value, Balance [Roll Forward] Servicing Asset at Amortized Cost, Balance [Roll Forward] Beginning balance Origination Servicing Asset at Amortized Cost, Additions Amortization Servicing Asset at Amortized Cost, Amortization Ending balance Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Commercial and Consumer Banking [Member] Consumer and Commercial Banking [Member] Consumer and Commercial Banking [Member] Mortgage Banking [Member] Mortgage Banking [Member] Mortgage Banking [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Number of operating segments Maximum amount of commercial real estate loans the company would originate Loan Origination, Commercial Real Estate, Maximum Amount Loan Origination, Commercial Real Estate, Maximum Amount Condensed income statement: Segment Reporting Information, Profit (Loss) [Abstract] Net interest income Interest Income (Expense), Net Noninterest Income Noninterest Income Noninterest expense Noninterest Expense Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax (benefit) expense NET INCOME Total assets Deposit balances, including stated rates Deposit Balances Including Stated Rates [Table Text Block] Deposit balances, including stated rates. Interest expense on deposits Interest Expense on Deposits [Table Text Block] Interest expense on deposits. Certificates of deposit outstanding Schedule of Maturities of Certificate of Deposits [Table Text Block] Schedule of maturities of certificate of deposits. Allowance for credit losses by loan portfolio Financing Receivable, Allowance for Credit Losses [Roll Forward] Charge-offs Financing Receivable, Allowance for Credit Losses, Write-downs (Charge-offs) recoveries, net Financing Receivable, Allowance for Credit Losses, Recovery Provision for (Reversal of) credit losses Derivative [Table] Derivative [Table] Derivative [Line Items] Derivative [Line Items] Gross fair value, Derivative assets Securities pledged, Derivative assets Derivative Asset, Fair Value of Collateral Net amount - Derivative assets Derivative Asset, Fair Value, Amount Offset Against Collateral Securities pledged, Derivative liabilities Derivative Liability, Fair Value of Collateral Net amount, Derivative liabilities Derivative Liability, Fair Value, Amount Offset Against Collateral Income Statement [Abstract] Interest income: Interest and Dividend Income, Operating [Abstract] Loans Interest and Fee Income, Loans and Leases Investment securities Interest and Dividend Income, Securities, Operating Other Other Interest and Dividend Income Total interest income Interest and Dividend Income, Operating Interest expense: Interest Expense [Abstract] Deposits Federal Home Loan Bank advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Short-term Federal funds purchased and securities sold under agreements to repurchase Interest Expense, Securities Sold under Agreements to Repurchase Long-term debt Interest Expense, Long-term Debt Other Interest Expense, Other Total interest expense Interest Expense Net interest income Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Noninterest income: Noninterest Income [Abstract] Net gain on loan origination and sale activities Loan servicing income Income from WMS Series LLC Income (Loss) from Equity Method Investments Depositor and other retail banking fees Depositor and Other Retail Banking Fees Depositor and other retail banking fees. Insurance agency commissions Insurance Commissions and Fees Gain on sale of investment securities available for sale Debt Securities, Available-for-sale, Realized Gain (Loss) Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Other Noninterest Income (Expense), Other Noninterest Income (Expense), Other Total noninterest income Noninterest expense: Noninterest Expense [Abstract] Salaries and related costs Labor and Related Expense General and administrative General and Administrative Expense Amortization of core deposit intangibles Amortization of Intangible Assets Legal Legal Fees Consulting Professional Fees Federal Deposit Insurance Corporation assessments Federal Deposit Insurance Corporation Premium Expense Occupancy Occupancy, Net Information services Communications and Information Technology Net cost (benefit) from operation and sale of other real estate owned Net cost (income) from operations and sale of other real estate owned Amount of net cost (income) from operations and sale of other real estate owned during the period. Total noninterest expense Basic income per share (in dollars per share) Diluted weighted average number of shares outstanding (in shares) Nonrecurring [Member] Fair Value, Measurements, Nonrecurring [Member] Loans held for investment Gains (losses) on loans held for investment Condensed income statement Schedule of Segment Reporting Information, by Segment [Table Text Block] Fair Value Inputs, Assets, Quantitative Information [Table] Fair Value Inputs, Assets, Quantitative Information [Table] Loans held for investment [Member] Loans held for investment [Member] Loans held for investment [Member] Loans held for sale [Member] Loans held for sale [Member] Loans held for sale [Member] Fair Value Inputs, Assets, Quantitative Information [Line Items] Fair Value Inputs, Assets, Quantitative Information [Line Items] Loans held for investment, fair value option Implied spread to benchmark interest rate curve (as a percent) Fair Value Inputs, Implied Spread Fair Value Inputs, Implied Spread Market price movement from comparable bond (as a percent) Amortized cost and fair value of investment securities available for sale Debt Securities, Available-for-sale and Held-to-maturity [Table Text Block] This item details amortized cost, unrealized gain/loss, and fair value for both debt and equity securities classified as (1) available-for-sale securities and (2)held-to-maturity securities. AFS securities are reported at fair value and HTM securities are reported at amortized cost on the Consolidated Balance Sheets. Amortized cost and fair value of held-to-maturity securities Held-to-maturity Securities [Table Text Block] Investment securities in an unrealized loss position Debt Securities, Available-For-Sale and Held-To-Maturity, Unrealized Loss Position, Fair Value [Table Text Block] This item represents the fair value of securities categorized as AFS and HTM that have been in a continuous unrealized loss position for less than twelve months as well as twelve months or longer. This item also details the total fair value and the total gross unrealized losses. Computation of weighted average yield using coupon on the fair value Computation of Weighted Average Yield Using Coupon on Fair Value [Table Text Block] Sales of investment securities available for sale Schedule of Realized Gain (Loss) [Table Text Block] Carrying value of securities pledged as collateral Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block] Schedule of earnings per share, basic and diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] FAIR VALUE MEASUREMENT Fair Value Disclosures [Text Block] COMMITMENTS, GUARANTEES AND CONTINGENCIES Commitments Contingencies and Guarantees [Text Block] Mortgage loans on real estate, by loan Mortgage Loans on Real Estate, by Loan Disclosure [Table Text Block] Tabular disclosure of mortgage loans on Real Estate, held for sale and sold. Net gain on loan origination and sale activity Net Gain on Mortgage Loan Origination and Sale Activity [Table Text Block] Net gain on mortgage loan origination and sale activity. Company's portfolio of loans serviced for others Portfolio of Loans Serviced for Others [Table Text Block] Company's portfolio of loans serviced for others. Mortgage repurchase losses Mortgage Repurchase Losses [Table Text Block] Mortgage Repurchase Losses rollforward Revenue from mortgage servicing, including the effects of derivative risk management instruments Schedule of Revenue from Mortgage Servicing Including Effects of Derivative Risk Management Instruments [Table Text Block] Revenue from mortgage servicing, including the effects of derivative risk management instruments. Key economic assumptions used in measuring initial FV of capitalized single family MSRs Key Economic Assumptions Used in Measuring Initial Value of Capitalized Single Family Created from Loan Sales with Retained Servicing [Table Text Block] Key economic assumptions used in measuring the initial value of capitalized single family MSRs created from loan sales with retained servicing. Schedule of sensitivity analysis of fair value, transferor's interests in transferred financial assets Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets [Table Text Block] Changes in single family MSRs measured at fair value Schedule of Servicing Assets at Fair Value [Table Text Block] Changes in multifamily MSRs measured at the lower of amortized cost or fair value Servicing Asset at Amortized Cost [Table Text Block] Projected amortization expense for the gross carrying value of multifamily MSRs Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] AVAILABLE FOR SALE Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Due within one year, Fair value Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Due in one through five years, Fair value Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Due in five through ten years, Fair value Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Due after ten years, Fair value Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Total, Fair value Weighted Average Yield, due within one year (as a percent) Available for Sale Securities Debt Maturities within One Year Weighted Average Yield Available for sale securities debt maturities with in one year weighted average yield. Weighted Average Yield, due in one through five years (as a percent) Available for Sale Securities Debt Maturities After One Through Five Years Weighted Average Yield Available-for-sale securities debt maturities year two through five fair value Weighted Average Yield, due in five through ten years (as a percent) Available for Sale Securities Debt Maturities After Five Through Ten Years Weighted Average Yield Available for sale securities debt maturities after five through ten years weighted average yield. Weighted Average Yield, due after ten years (as a percent) Available for Sale Securities Debt Maturities After Ten Years Weighted Average Yield Available for sale securities debt maturities after ten years weighted average yield. Weighted average yield contractual maturities, Total (as a percent) Available for Sale Securities Debt Maturities Without Single Maturity Date Weighted Average Yield Available for sale securities debt maturities without single maturity date weighted average yield. Due within one year, Fair value Held-to-maturity Securities, Debt Maturities, Next Rolling Twelve Months, Fair Value Due in one through five years, Fair value Held-to-maturity Securities, Debt Maturities, Rolling Year Two Through Five, Fair Value Due in five through ten years, Fair value Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Fair Value Due after ten years, Fair value Held-to-maturity Securities, Debt Maturities, Rolling after Ten Years, Fair Value Total, Fair value Weighted Average Yield, due within one year (as a percent) HeldToMaturitySecuritiesDebtMaturitiesAverageYieldWithinOneYear This item represents the average yield on debt securities with maturities within one year of the balance sheet date and which are categorized as held-to-maturity. Weighted Average Yield, due in one through five years (as a percent) HeldToMaturitySecuritiesDebtMaturitiesAverageYieldAfterOneThroughFiveYears This item represents the average yield on debt securities with maturities expected to mature after one through five years from the balance sheet date and which are categorized as held-to-maturity. Weighted Average Yield, due in five through ten years (as a percent) HeldToMaturitySecuritiesDebtMaturitiesAverageYieldAfterFiveThroughTenYears This item represents the average yield on debt securities with maturities after five through ten years as of the balance sheet date and which are categorized as held-to-maturity. Weighted Average Yield, due after ten years (as a percent) HeldToMaturitySecuritiesDebtMaturitiesAverageYieldAfterTenYears This item represents the average yield on debt securities with maturities due after ten years as of the balance sheet date and which are categorized as held-to-maturity. Weighted average yield contractual maturities, Total (as a percent) HeldToMaturitySecuritiesDebtMaturitiesAverageYield This item represents average yield on the total of all debt securities grouped by maturity dates, at fair value, which are categorized as held-to-maturity. Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) [Table] Loans [Member] Loans [Member] Mortgages [Member] Mortgages [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Net gain (loss) recognized on derivatives, including economic hedge Fair value measurement methodologies Fair Value Measurement Methodologies [Table Text Block] Fair value measurement methodologies. Schedule of fair value hierarchy measurement Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of inputs used to measure fair value Fair Value Inputs, Assets, Quantitative Information [Table Text Block] Schedule of fair value changes and activity for Level 3 Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of assets that had changes in their recorded fair value Fair Value Measurements, Nonrecurring [Table Text Block] Schedule of the fair value hierarchy Fair Value, by Balance Sheet Grouping [Table Text Block] BUSINESS SEGMENTS Segment Reporting Disclosure [Text Block] Reported Value Measurement [Member] Allowance: collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Allowance: individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Allowance for credit losses Loans: collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment Loans: individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Total Financing Receivable, Gross Asset Class [Domain] Fair Value Changes and Activity for Level 3 [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Beginning balance Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Transfers Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Realized/unrealized gains (losses) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Ending balance