Fair Value Disclosures [Abstract] Schedule Of Available For Sale Securities Measured At Fair Value On A Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Fair Value, Mortgage Loans Held for Sale Fair Value, Mortgage Loans Held for Sale [Table Text Block] Fair Value, Mortgage Loans Held for Sale Schedule of Interest Rate Lock Commitments Measured at Fair Value on Recurring Basis Schedule of Interest Rate Lock Commitments Measured at Fair Value on Recurring Basis [Table Text Block] Schedule of Interest Rate Lock Commitments Measured at Fair Value on Recurring Basis [Table Text Block] Forward Sale Commitments with Investors Measured at Fair Value On A Recurring Basis Forward Sale Commitments with Investors [Table Text Block] Forward Sale Commitments with Investors [Table Text Block] Paired Off Commitments with Investors Measured at Fair Value On A Recurring Basis Paired Off Commitments with Investors [Table Text Block] Paired Off Commitments with Investors [Table Text Block] Schedule of Impaired Loans and Other Real Estate Owned Schedule of Impaired Loans and Other Real Estate Owned [Table Text Block] Schedule of Impaired Loans and Other Real Estate Owned [Table Text Block] Schedule of Fair Value of Financial Instruments Measured under a Level 3 Unobservable Input Fair Value Inputs, Instruments Classified in Shareholders' Equity, Quantitative Information [Table Text Block] Fair Value, Instruments Classified in Shareholders' Equity Measured on Recurring Basis, Unobservable Input Reconciliation Fair Value, Instruments Classified in Shareholders' Equity Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Fair Value, by Balance Sheet Grouping Fair Value, by Balance Sheet Grouping [Table Text Block] Receivables [Abstract] Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivables Past Due [Table] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable, Type [Domain] TDR loans on accrual Accruing Financing Receivables [Member] Accruing Financing Receivables [Member] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Number of TDR loans modified in previous 12 months Financing Receivable, Modifications, Subsequent Default, Number of Contracts TDR loans on accrual Financing Receivable, Modifications, Number of Contracts Mortgage Loans in Process of Foreclosure, Amount Mortgage Loans in Process of Foreclosure, Amount Financing Receivable, Modifications, Recorded Investment Financing Receivable, Modifications, Recorded Investment Financing Receivable, Modifications, Number of Contracts with Additional Funding Commitments Financing Receivable, Modifications, Number of Contracts with Additional Funding Commitments Financing Receivable, Modifications, Number of Contracts with Additional Funding Commitments Earnings Per Share [Abstract] Earnings Per Share Earnings Per Share [Text Block] Document And Entity Information -- None. No documentation exists for this element. -- Entity Registrant Name Entity Registrant Name Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Filer Category Entity Filer Category Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Banking and Thrift [Abstract] Noninterest-bearing checking Noninterest-bearing Domestic Deposit, Checking Interest-bearing checking Interest-bearing Domestic Deposit, Checking Savings Deposits, Savings Deposits Money market (4) Deposits, Money Market Deposits Certificates of deposit less than $100,000 Time Deposits, Less than $100,000 Certificates of deposit of $100,000 through $250,000 Time Deposits, between $100,000 and $250,000 Time Deposits, between $100,000 and $250,000 Certificates of deposit of $250,000 and over Time Deposits, $250,000 or More Time Deposits, $250,000 or More Escrow accounts related to mortgages serviced Deposits, Escrowed Accounts Deposits, Escrowed Accounts Total deposits Deposits Remaining Branch Purchase Deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits Certificate of Deposit, Brokered Certificate of Deposit, Brokered Certificate of Deposit, Brokered Interest-bearing Domestic Deposit, Brokered Interest-bearing Domestic Deposit, Brokered Federal Reserve Bank, Reserve Requirements, Cash and Federal Reserve Bank Deposits Federal Reserve Bank, Reserve Requirements, Cash and Federal Reserve Bank Deposits Federal Reserve Bank, Reserve Requirements, Cash and Federal Reserve Bank Deposits Accounting Policies [Abstract] Schedule of Accounting Policies [Table] Schedule of Accounting Policies [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Bank of America [Member] Bank of America [Member] Bank of America [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Puget Sound [Member] Puget Sound [Member] Puget Sound [Member] Tri-Cities, Washington [Member] Tri-Cities, Washington [Member] Tri-Cities, Washington [Member] Schedule of Accounting Policies [Line Items] [Line Items] for Schedule of Accounting Policies [Table] Number of bank branches Number of Bank Branches Number of Bank Branches Number of Loan Production Facilities Number of Loan Production Facilities Number of Loan Production Facilities Percentage of common shares purchased under ESOP Employee Stock Ownership Plan (ESOP), Percentage of Common Shares Outstanding in ESOP Employee Stock Ownership Plan (ESOP), Percentage of Common Shares Outstanding in ESOP Total ESOP shares (in shares) Employee Stock Ownership Plan (ESOP), Shares in ESOP Income Statement [Abstract] Loans receivable including fees Interest and Fee Income, Other Loans Interest and dividends on investment securities, cash and cash equivalents, and certificates of deposit at other financial institutions Investment Income, Interest and Dividend Total interest and dividend income Interest and Dividend Income, Operating Deposits Interest Expense, Deposits Borrowings Interest Expense, Borrowings Subordinated note Interest Expense, Subordinated Notes and Debentures Total interest expense Interest Expense NET INTEREST INCOME Interest Income (Expense), Net PROVISION FOR LOAN LOSSES Provision for Loan and Lease Losses NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES Interest Income (Expense), after Provision for Loan Loss Service charges and fee income Fees and Commissions, Depositor Accounts Gain on sale of loans Gain (Loss) on Sales of Loans, Net Gain on sale of investment securities Gain (Loss) on Sale of Investments Gain on sale of mortgage servicing rights (“MSR”) Gain (Loss) on Disposition of Intangible Assets Earnings on cash surrender value of BOLI Bank Owned Life Insurance Income Other noninterest income Noninterest Income, Other Total noninterest income Noninterest Income Salaries and benefits Labor and Related Expense Operations Selling, General and Administrative Expense Occupancy Occupancy, Net Data processing Information Technology and Data Processing Gain on sale of other real estate owned (“OREO”) Gains (Losses) on Sales of Other Real Estate Loan costs Loan Processing Fee Professional and board fees Professional Fees Federal Deposit Insurance Corporation (“FDIC”) insurance Federal Deposit Insurance Corporation Premium Expense Marketing and advertising Marketing and Advertising Expense Acquisition costs Business Combination, Acquisition Related Costs Amortization of core deposit intangible Amortization of Intangible Assets Impairment on servicing rights Mortgage Servicing Rights (MSR) Impairment (Recovery) Total noninterest expense Noninterest Expense INCOME BEFORE PROVISION FOR INCOME TAXES Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest PROVISION FOR INCOME TAXES Income Tax Expense (Benefit) NET INCOME Net Income (Loss) Attributable to Parent Basic earnings per share (in dollars per share) Earnings Per Share, Basic Diluted earnings per share (in dollars per share) Earnings Per Share, Diluted Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative [Table] Derivative [Table] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Derivative, by Nature [Axis] Derivative Instrument [Axis] Derivative, Name [Domain] Derivative Contract [Domain] Fallout adjusted interest rate lock commitments with customers Interest Rate Lock Commitments [Member] Mandatory and best effort forward commitments with investors Forward Contracts [Member] Forward TBA mortgage-backed securities Collateralized Mortgage Backed Securities [Member] TBA mortgage-backed securities forward sales paired off with investors Mortgage-backed Securities, Investor Paired Off Forward Sales [Member] Mortgage-backed Securities, Investor Paired Off Forward Sales [Member] Derivative [Line Items] Derivative [Line Items] Notional Derivative, Notional Amount Asset Interest Rate Derivative Assets, at Fair Value Liability Interest Rate Derivative Liabilities, at Fair Value Derivative instruments, (loss) gain on sale of loans Derivative, Gain (Loss) on Derivative, Net Fair Value, Off-balance Sheet Risk [Abstract] Fair Value, Off-balance Sheet Risk [Abstract] 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] Mortgage, commercial and consumer servicing rIghts Mortgage, Commercial and Consumer Servicing RIghts [Member] Mortgage, Commercial and Consumer Servicing RIghts [Member] Off-balance Sheet Risks, Disclosure Information [Line Items] Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Servicing Asset at Fair Value, Amount [Roll Forward] Servicing Asset at Fair Value, Amount [Roll Forward] Beginning balance Servicing Asset at Amortized Cost Additions Servicing Asset at Fair Value, Additions Sales Servicing Asset at Amortized Cost, Disposals Servicing rights amortized Servicing Asset at Amortized Cost, Amortization Impairment on servicing rights Servicing Asset at Amortized Cost, Impairment (Recovery) Servicing Asset at Amortized Cost, Impairment (Recovery) Ending balance Regulatory Capital Requirements [Abstract] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Bank Subsidiaries [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Common Equity Tier 1 to Risk Weighted Assets, Capital Conservation Buffer, Phased in Common Equity Tier 1 to Risk Weighted Assets, Capital Conservation Buffer, Phased in Common Equity Tier 1 to Risk Weighted Assets, Capital Conservation Buffer, Phased in Common Equity Tier 1 to Risk Weighted Assets, Capital Conservation Buffer Common Equity Tier 1 to Risk Weighted Assets, Capital Conservation Buffer Common Equity Tier 1 to Risk Weighted Assets, Capital Conservation Buffer Total risk-based capital, Amount Total risk-based capital -- None. No documentation exists for this element. -- Total risk-based capital, Ratio Capital to Risk Weighted Assets Total risk-based capital, For Capital Adequacy Purposes, Amount Capital Required for Capital Adequacy Total risk-based capital, For Capital Adequacy Purposes, Ratio Capital Required for Capital Adequacy to Risk Weighted Assets Total risk-based capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Amount Capital Required to be Well Capitalized Total risk-based capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio Capital Required to be Well Capitalized to Risk Weighted Assets Tier 1 risk-based capital, Amount Tier One Risk Based Capital Tier 1 risk-based capital, Ratio Tier One Risk Based Capital to Risk Weighted Assets Tier 1 risk-based capital, For Capital Adequacy Purposes, Amount Tier One Risk Based Capital Required for Capital Adequacy Tier 1 risk-based capital, For Capital Adequacy Purposes, Ratio Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Tier 1 risk-based capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Amount Tier One Risk Based Capital Required to be Well Capitalized Tier 1 risk-based capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Tier 1 leverage capital Tier One Leverage Capital Tier 1 leverage capital, Ratio Tier One Leverage Capital to Average Assets Tier 1 leverage capital, For Capital Adequacy Purposes, Amount Tier One Leverage Capital Required for Capital Adequacy Tier 1 leverage capital, For Capital Adequacy Purposes, Ratio Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier 1 leverage capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Amount Tier One Leverage Capital Required to be Well Capitalized Tier 1 leverage capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio Tier One Leverage Capital Required to be Well Capitalized to Average Assets CET 1 capital, Amount Common Equity Tier 1 Capital Common Equity Tier 1 Capital CET 1 capital, Ratio Common equity Tier 1 capital ratio Common equity Tier 1 capital ratio CET 1 capital, For Capital Adequacy Purposes, Amount Common Equity Tier 1 Capital Required for Capital Adequacy Common Equity Tier 1 Capital Required for Capital Adequacy CET 1 capital, For Capital Adequacy Purposes, Ratio Common Equity Tier 1 Capital Required for Capital Adequacy, Percent Common Equity Tier 1 Capital Required for Capital Adequacy, Percent CET 1 capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Amount Common Equity Tier 1 Capital Required to be Well Capitalized Common Equity Tier 1 Capital Required to be Well Capitalized CET 1 capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio Common Equity Tier 1 Capital Required to be Well Capitalized, Percent Common Equity Tier 1 Capital Required to be Well Capitalized, Percent Other Real Estate [Roll Forward] Other Real Estate [Roll Forward] Beginning balance Other Real Estate, Foreclosed Assets, and Repossessed Assets Net loans transferred to OREO Other Real Estate Owned Additions -- None. No documentation exists for this element. -- Capitalized costs Other real estate owned, capitalized costs Other real estate owned, capitalized costs Gross proceeds from sale of OREO Other Real Estate Owned Disposition of Assets -- None. No documentation exists for this element. -- Ending balance Gains (Losses) on Sales of Investment Real Estate 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] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Paired Off Commitments with Investors Paired Off Commitments with Investors Paired Off Commitments with Investors Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Business Combinations [Abstract] Amortization of Intangible Assets 2017 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Total Finite-Lived Intangible Assets, Net Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Cash and due from banks Cash and Due from Banks Interest-bearing deposits at other financial institutions Interest-bearing Deposits in Banks and Other Financial Institutions Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents, at Carrying Value Certificates of deposit at other financial institutions Certificates of Deposit, at Carrying Value Securities available-for-sale, at fair value Available-for-sale Securities, Debt Securities Loans held for sale, at fair value Mortgages Held-for-sale, Fair Value Disclosure Loans receivable, net Loans Receivable, Net Accrued interest receivable Interest Receivable Premises and equipment, net Property, Plant and Equipment, Net Federal Home Loan Bank (“FHLB”) stock, at cost Federal Home Loan Bank Stock Bank owned life insurance (“BOLI”), net Bank Owned Life Insurance Servicing rights, held at the lower of cost or fair value Servicing Asset Goodwill Goodwill Core deposit intangible, net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Core Deposit Intangibles Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Core Deposit Intangibles Other assets Other Assets TOTAL ASSETS Assets LIABILITIES Liabilities [Abstract] Noninterest-bearing accounts Noninterest-bearing Deposit Liabilities Interest-bearing accounts Interest-bearing Deposit Liabilities Borrowings Other Borrowings Subordinated note Subordinated Debt Unamortized debt issuance costs Unamortized Debt Issuance Expense Total subordinated note less unamortized debt issuance costs Subordinated Debt, Net of Unamortized Debt Issuance Costs Subordinated Debt, Net of Unamortized Debt Issuance Costs Other liabilities Other Liabilities Total liabilities Liabilities COMMITMENTS AND CONTINGENCIES (NOTE 9) Commitments and Contingencies STOCKHOLDERS’ EQUITY Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $.01 par value; 5,000,000 shares authorized; none issued or outstanding Preferred Stock, Value, Issued Common stock, $.01 par value; 45,000,000 shares authorized; 3,075,168 and 3,059,503 shares issued and outstanding at June 30, 2017, and December 31, 2016, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings, Unappropriated Accumulated other comprehensive loss, net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Unearned shares - Employee Stock Ownership Plan (“ESOP”) Unearned ESOP Shares Total stockholders’ equity Stockholders' Equity Attributable to Parent TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Segment Reporting [Abstract] Business Segments Segment Reporting Disclosure [Text Block] Regulatory Capital Regulatory Capital Requirements under Banking Regulations [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2013 Equity Incentive Plan Equity Incentive Plan, 2013 [Member] Equity Incentive Plan, 2013 [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Options, Expected Forfeiture Rate Share-based Compensation Arrangement by Share-based Payment Award, Options, Expected Forfeiture Rate Share-based Compensation Arrangement by Share-based Payment Award, Options, Expected Forfeiture Rate Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding, beginning balance (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 Less exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Outstanding, ending balance (in shares) Expected to vest, assuming a 0.31% annual forfeiture rate (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Weighted-Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Outstanding, beginning balance (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 Less exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Outstanding, ending balance (in dollars per share) Expected to vest, assuming a 0.31% annual forfeiture rate (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Exercisable (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted-Average Remaining Contractual Term In Years Share-based Compensation Arrangement by Share-based Payment Award, Weighted Average Remaining Contractual Term [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Weighted Average Remaining Contractual Term [Abstract] Outstanding, beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Outstanding, ending balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Expected to vest, assuming a 0.31% annual forfeiture rate Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value Less exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Ending balance Expected to vest, assuming a 0.31% annual forfeiture rate Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Servicing Rights Transfers and Servicing of Financial Assets [Text Block] Investments, Debt and Equity Securities [Abstract] Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Home equity Home Equity Loan [Member] One-to-four-family (1) One to Four Family Real Estate Loans [Member] -- None. No documentation exists for this element. -- Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Impaired Financing Receivable, Unpaid Principal Balance [Abstract] Impaired Financing Receivable, Unpaid Principal Balance [Abstract] Unpaid Principal Balance, with no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Impaired Financing Receivable, Write-downs [Abstract] Impaired Financing Receivable, Write-downs [Abstract] Impaired Financing Receivable, Write-downs [Abstract] Write-downs with no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Write-downs Impaired Financing Receivable, with No Related Allowance, Write-downs Impaired Financing Receivable, Recorded Investment [Abstract] Impaired Financing Receivable, Recorded Investment [Abstract] Recorded Investment, with no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Recorded Investment Impaired Financing Receivable, Average Recorded Investment [Abstract] Impaired Financing Receivable, Average Recorded Investment [Abstract] YTD Average Recorded Investment, with no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Impaired Financing Receivable, Interest Income, Accrual Method [Abstract] Impaired Financing Receivable, Interest Income, Accrual Method [Abstract] YTD Interest Income Recognized, with no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method Schedule of Available-for-sale Securities Reconciliation Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Schedule of Unrealized Loss on Investments Schedule of Unrealized Loss on Investments [Table Text Block] Schedule of Available for Sale Securities by Contractual Maturity Investments Classified by Contractual Maturity Date [Table Text Block] Level 1 Level 2 Level 3 Loans held for sale, at fair value Loans Held-for-sale, Fair Value Disclosure Schedule of Available-For-Sale Securities [Table] Schedule of Held-to-maturity 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] U.S. agency securities Agency Securities [Member] Corporate securities Corporate Debt Securities [Member] Municipal bonds Municipal Bonds [Member] U.S. Small Business Administration securities Other Security Investments [Member] Debt Security [Axis] Debt Security [Axis] Major Types of Debt Securities [Domain] Major Types of Debt Securities [Domain] Federal National Mortgage Association (“FNMA”) Federal National Mortgage Association (FNMA) Insured Loans [Member] Federal Home Loan Mortgage Corporation (“FHLMC”) Federal Home Loan Mortgage Corporation (FHLMC) Insured Loans [Member] Government National Mortgage Association (“GNMA”) Government National Mortgage Association (GNMA) Insured Loans [Member] Schedule of Available-For-Sale Securities [Line Items] Schedule of Held-to-maturity Securities [Line Items] Amortized Cost Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] Due in one year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis Due after one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis Due after five years through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis Due after ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Subtotal Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis Mortgage-backed securities Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis Total Available-for-sale Debt Securities, Amortized Cost Basis Fair Value Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Due in one year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Due after one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Due after five years through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Due after ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Subtotal Available-for-sale Securities, Debt Maturities, Single Maturity Date Mortgage-backed securities Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value Total Schedule of Deposit Liabilities Schedule of Deposit Liabilities [Table Text Block] [Table Text Block] for Schedule of Deposit Liabilities [Table] Schedule of Maturities of Time Deposits for Future Periods Schedule of Maturities of Time Deposits [Table Text Block] Schedule of Maturities of Time Deposits [Table Text Block] Schedule of Interest Expense by Deposit Category Schedule of Interest Expense by Deposit Category [Table Text Block] -- None. No documentation exists for this element. -- Number of other real estate owned properties Number of Real Estate Properties Gain on sale of OREO Other real estate owned holding costs (recovery) Real Estate Owned, Holding Costs Real Estate Owned, Holding Costs Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Pass Pass [Member] Watch Watch [Member] -- None. No documentation exists for this element. -- Special Mention Special Mention [Member] Substandard Substandard [Member] Doubtful Doubtful [Member] Loss Unlikely to be Collected Financing Receivable [Member] REAL ESTATE LOANS Mortgages [Member] Commercial Commercial Real Estate [Member] Construction and development Construction Loans [Member] Home equity Home Equity Line of Credit [Member] Multi-family Multi Family Real Estate Loans [Member] -- None. No documentation exists for this element. -- CONSUMER LOANS Consumer Loan [Member] Indirect home improvement Consumer Indirect Home Improvement Loans [Member] -- None. No documentation exists for this element. -- Solar Consumer Loan, Solar [Member] Consumer Loan, Solar [Member] Marine Consumer Loans Marine Loan Financing Receivable [Member] Consumer Loans Marine Loan Financing Receivable [Member] Other consumer Consumer Portfolio Segment [Member] COMMERCIAL BUSINESS LOANS Commercial Loan [Member] Commercial and industrial Commercial and industrial [Member] Commercial and industrial [Member] Warehouse lending Warehouse lending [Member] Warehouse lending [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Total loans Financing Receivable, Net Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Adjustments to reconcile net income to net cash from operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Provision for loan losses Depreciation, amortization and accretion Depreciation, Amortization and Accretion, Net Compensation expense related to stock options and restricted stock awards Share-based Compensation ESOP compensation expense for allocated shares Employee Stock Ownership Plan (ESOP), Compensation Expense Increase in cash surrender value of BOLI Gain on sale of loans held for sale Gain on sale of loans held for sale -- None. No documentation exists for this element. -- Gain on sale of investment securities Gain on sale of MSR Origination of loans held for sale Payments for Origination of Mortgage Loans Held-for-sale Proceeds from sale of loans held for sale Proceeds from Sale of Mortgage Loans Held-for-sale Changes in operating assets and liabilities Increase (Decrease) in Operating Assets [Abstract] Accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Other assets Increase (Decrease) in Other Current Assets Other liabilities Increase (Decrease) in Other Accrued Liabilities Net cash from (used by) operating activities Net Cash Provided by (Used in) Operating Activities Proceeds from Sale of Available-for-sale Securities Proceeds from Sale of Available-for-sale Securities CASH FLOWS FROM INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities [Abstract] Activity in securities available-for-sale: Available-for-sale Securities [Abstract] Maturities, prepayments, sales, and calls Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Purchases Payments for (Proceeds from) Investments Interest Expense, Time Deposits Interest Expense, Time Deposits Purchase of certificates of deposit at other financial institutions Proceeds from (Payments for) in Interest-bearing Deposits in Banks Loan originations and principal collections, net Payments for (Proceeds from) Loans and Leases Purchase of portfolio loans Loans and Leases Receivable, Commitments to Purchase or Sell Proceeds from sale of other real estate owned, net Proceeds from Sale of Wholly Owned Real Estate and Real Estate Acquired in Settlement of Loans Purchase of premises and equipment, net Payments to Acquire Property, Plant, and Equipment FHLB stock, net Payments for (Proceeds from) Federal Home Loan Bank Stock Proceeds from Sale of Intangible Assets Proceeds from Sale of Intangible Assets Net cash received from acquisition Cash Acquired from Acquisition Net cash (used by) from investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities [Abstract] Net increase in deposits Increase (Decrease) in Deposit Assets Proceeds from (Repayments of) Debt Proceeds from (Repayments of) Debt Dividends paid Payments of Dividends Proceeds from stock options exercised Proceeds from Stock Options Exercised Common stock repurchased Payments for Repurchase of Common Stock Net cash from (used by) financing activities Net Cash Provided by (Used in) Financing Activities NET DECREASE IN CASH AND CASH EQUIVALENTS Cash and Cash Equivalents, Period Increase (Decrease) CASH AND CASH EQUIVALENTS, beginning of period CASH AND CASH EQUIVALENTS, end of period SUPPLEMENTARY DISCLOSURES OF CASH FLOW INFORMATION Supplemental Cash Flow Information [Abstract] Interest Interest Paid, Net Income taxes Income Taxes Paid Total assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Total liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities SUPPLEMENTARY DISCLOSURES OF NONCASH OPERATING, INVESTING AND FINANCING ACTIVITIES Noncash Investing and Financing Items [Abstract] Change in unrealized gain on investment securities Unrealized Gain (Loss) on Securities Property received in settlement of loans Property taken in settlement of loans -- None. No documentation exists for this element. -- Retention of gross mortgage servicing rights from loan sales Retention of Mortgage Servicing Rights from Loan Sales Retention of Mortgage Servicing Rights from Loan Sales Commitments to Extend Credit Commitments to Extend Credit [Member] Commercial/Multi-family Commercial and Multi Family Real Estate Loans Member [Member] Commercial and Multi Family Real Estate Loans Member [Member] CONSUMER LOANS Commitments Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Asset 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] Number of loan portfolio segments Number of Loan Portfolio Segments Number of Loan Portfolio Segments Number of units in real estate property Number of Units in Real Estate Property Statement of Comprehensive Income [Abstract] Net income Other comprehensive income, before tax: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Securities available-for-sale: Available-for-sale Securities, Gross Unrealized Gain (Loss) [Abstract] Unrealized holding gain during period Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Income tax provision related to unrealized holding gain Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax COMPREHENSIVE INCOME Comprehensive Income (Loss), Net of Tax, Attributable to Parent Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Measurements, Nonrecurring Fair Value, Measurements, Nonrecurring [Member] Interest Rate Lock Commitments Fair Value Item, Primary Categorization [Axis] [Axis] Fair Value Item, Primary Categorization [Axis] [Axis] Fair Value Item, Primary Categorization [Axis] [Axis] Fair Value Item, Primary Categorization [Axis] [Domain] Fair Value Item, Primary Categorization [Axis] [Domain] [Domain] for Fair Value Item, Primary Categorization [Axis] [Axis] Impaired Loans Impaired Loans [Member] Impaired Loans [Member] Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Fair Value of Underlying Collateral Fair Value of Underlying Collateral [Member] Fair Value of Underlying Collateral [Member] Quoted Market Prices Quoted Market Prices [Member] Quoted Market Prices [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Weighted Average Weighted Average [Member] Significant Unobservable Inputs [Axis] Significant Unobservable Inputs [Axis] Significant Unobservable Inputs [Axis] Significant Unobservable Inputs [Domain] Significant Unobservable Inputs [Domain] [Domain] for Significant Unobservable Inputs [Axis] Pull-through expectations Pull-through Expectations [Member] Pull-through Expectations [Member] Discount applied to the obtained appraisal Discount Applied to the Obtained Appraisal [Member] Discount Applied to the Obtained Appraisal [Member] Level 3 Fair Value Instrument Fair Value Inputs, Discount Rate Individual Forward Sale Commitments with Investors Forward Sale Commitments with Investors Forward Sale Commitments with Investors Interest-bearing checking Interest Expense Domestic Deposit Liabilities, Checking Savings and money market Interest Expense, Savings Deposits Certificates of deposit Interest Expense Domestic Deposit Liabilities, Certificates of Deposit Total Schedule of Accounts, Notes, Loans and Financing Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Allowance for Credit Losses on Financing Receivables Allowance for Credit Losses on Financing Receivables [Table Text Block] Past Due Financing Receivables Past Due Financing Receivables [Table Text Block] Impaired Financing Receivables Impaired Financing Receivables [Table Text Block] Financing Receivable Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted stock awards Restricted Stock [Member] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Nonvested, Beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Less vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Nonvested, Ending balance (in shares) Weighted-Average Grant-Date Fair Value Per Share Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Nonvested, 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 Less 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 Nonvested, Ending balance (in dollars per share) Weighted-Average Grant-Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value [Abstract] Nonvested, Beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Amount Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Amount Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Grants in Period, Weighted Average Grant Date Fair Value, Amount Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Grants in Period, Weighted Average Grant Date Fair Value, Amount Less vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested, Weighted Average Grant Date Fair Value, Amount Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested, Weighted Average Grant Date Fair Value, Amount Nonvested, Endng balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Forfeited in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Forfeited in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Forfeited in Period Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Acquired Book Value Portion at Other than Fair Value Measurement [Member] Fair Value Adjustments Changes Measurement [Member] Amount Recorded Reported Value Measurement [Member] Bank of America Business Acquisition [Line Items] Business Acquisition [Line Items] Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Loans receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Premises and equipment, net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Accrued interest receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Interest Receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Interest Receivable Core deposit intangible Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets Noninterest-bearing accounts Interest-bearing accounts Total deposits Accrued interest payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Other liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Liabilities Estimated amortization period Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 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 or More Past Due Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Non-Accrual Non Accrual Financing Receivables [Member] Non Accrual Financing Receivables [Member] Total real estate loans Real Estate Loan [Member] Home Equity Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Total Past Due Financing Receivable, Recorded Investment, Past Due Current Financing Receivable, Recorded Investment, Current Total loans receivable Compensation and Retirement Disclosure [Abstract] Employee stock ownership plan (ESOP), requisite service period and 12 months Employee Stock Ownership Plan (ESOP), Requisite Service Period, 12 Months Employee Stock Ownership Plan (ESOP), Requisite Service Period, 12 Months Employee stock ownership plan (ESOP), debt structure, employer loan, amount Employee Stock Ownership Plan (ESOP), Debt Structure, Employer Loan, Amount Employee Stock Ownership Plan (ESOP), Debt Structure, Employer Loan, Amount Employee stock ownership plan shares purchased Employee Stock Ownership Plan (ESOP), Shares Purchased Employee Stock Ownership Plan (ESOP), Shares Purchased Employee stock ownership plan (ESOP), weighted average purchase price of shares purchased (in dollars per share) Employee Stock Ownership Plan (ESOP), Weighted Average Purchase Price of Shares Purchased Amortization period of ESOP loan Employee Stock Ownership Plan (ESOP), Debt Structure, Employer Loan, Term Employee Stock Ownership Plan (ESOP), Debt Structure, Employer Loan, Term Employee stock ownership plan (ESOP), debt structure, employer loan, interest rate Employee Stock Ownership Plan (ESOP), Debt Structure, Employer Loan, Interest Rate Employee Stock Ownership Plan (ESOP), Debt Structure, Employer Loan, Interest Rate Employee stock ownership plan (ESOP), periodic installment payments from esop, amount paid Employee Stock Ownership Plan (ESOP), Principal Payments from ESOP Employee Stock Ownership Plan (ESOP), Principal Payments from ESOP Employee stock ownership plan (ESOP), interest payments from esop Employee Stock Ownership Plan (ESOP), Interest Payments from ESOP Employee Benefit Plans Compensation and Employee Benefit Plans [Text Block] Denominator for basic earnings per share- weighted average common shares outstanding (shares) Weighted Average Number of Shares Outstanding, Basic Dilutive shares (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Denominator for diluted earnings per share- weighted average common shares outstanding (shares) Weighted Average Number of Shares Outstanding, Diluted Options, exercise price (in dollars per share) Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Income AOCI Attributable to Parent [Member] Unearned ESOP Shares Unearned Esop Shares [Member] -- None. No documentation exists for this element. -- Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance at (in shares) Shares, Outstanding Beginning Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Dividends paid ($0.07 and $0.10 per share for the 3 months ended March 31, 2016 and 2017, respectively) Payments of Ordinary Dividends, Common Stock Share-based compensation Restricted stock awards (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Stock Issued During Period, Value, Restricted Stock Award, Gross Stock Issued During Period, Value, Restricted Stock Award, Gross Common stock repurchased (in shares) Stock Repurchased During Period, Shares Stock options shares exercised (in shares) Stock options exercised Stock Issued During Period, Value, Stock Options Exercised Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent ESOP shares allocated Stock Issued During Period, Value, Employee Stock Ownership Plan Ending Balance at (in shares) Ending Balance Investment Type [Axis] Investment Type [Axis] Investment Type Categorization [Domain] Investments [Domain] Mortgage-backed securities Securities available-for-sale, at fair value Available-for-sale Securities Loans Receivable and Allowance For Loan Losses Financing Receivables [Text Block] Commitments and Contingencies Disclosure [Abstract] Schedule of Commitments to Extend Credit Schedule of Outstanding Commitments [Table Text Block] Schedule of Outstanding Commitments Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Unrealized loss position, Less than 12 Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Unrealized loss position, Less than 12 Months, Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Unrealized loss position, 12 Months or Longer, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Unrealized loss position, 12 Months or Longer, Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Unrealized loss position, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Unrealized loss position, Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Interest Rate Lock Commitments with Customers Interest Rate Derivatives, at Fair Value, Net Schedule of Financing Receivable, Allowance for Credit Losses [Table] Real Estate Real Estate [Member] Consumer Commercial Business Unallocated Unallocated Financing Receivables [Member] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Real Estate Financing Receivable, Allowance for Credit Losses [Roll Forward] Beginning balance Financing Receivable, Allowance for Credit Losses Provision for loan loss Provision for Loan, Lease, and Other Losses Charge-offs Financing Receivable, Allowance for Credit Losses, Write-downs Recoveries Financing Receivable, Allowance for Credit Losses, Recovery Net recoveries (charge-offs) Financing Receivable, Allowance for Credit Loses, Recovery (Write-downs), Net Financing Receivable, Allowance for Credit Loses, Recovery (Write-downs), Net Loans individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Loans collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Ending balance LOANS RECEIVABLE Loans Receivable, Net [Abstract] Loans individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Loans collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment Amortized Cost Available-for-sale Securities, Amortized Cost Basis Unrealized Gains Available-for-sale Securities, Gross Unrealized Gain(1) Available-for-sale Securities, Gross Unrealized Gain(1) Unrealized Losses Available-for-sale Securities, Gross Unrealized Losses, Continuous Unrealized Loss Position, Less than Twelve Months Available-for-sale Securities, Gross Unrealized Losses, Continuous Unrealized Loss Position, Less than Twelve Months Estimated Fair Values Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Business Combination [Abstract] Business Combination [Abstract] Carrying Amount Deposits Number of owned bank branches acquired Business Combination, Number of Bank Branches Acquired Business Combination, Number of Bank Branches Acquired Number of leases acquired with the bank branches Business Combination, Number of Leases Acquired Business Combination, Number of Leases Acquired Acquired deposits Loans and associated interest receivables Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Loans and Associated Interest Receivables Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Loans and Associated Interest Receivables Facilities and other assets, net of other liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Facilities and Other Assets, Net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Facilities and Other Assets, Net Deposit premium percentage fsbw_business combination recognized identifiable assets acquired and liabilities assumed, deposit premium, percent fsbw_business combination recognized identifiable assets acquired and liabilities assumed, deposit premium, percent Deposit premium Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposit Premium Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposit Premium Cash and cash equivalents Core deposit intangible increase in fair value Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles Core deposit intangible Decrease to fair value adjustment of goodwill Goodwill, Purchase Accounting Adjustments Increase in amortization of core deposit intangible Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Amortization Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Amortization Amortization period Other Real Estate Owned Real Estate Owned [Text Block] Summary of Stock Option Awards Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Summary of Nonvested Awards Schedule of Nonvested Share Activity [Table Text Block] Items Included in Consolidated Statement of Financial Condition [Abstract] Preferred stock par value, in dollars per share Preferred Stock, Par or Stated Value Per Share 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, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Beginning Balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Purchases and Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Sales and Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Ending Balance Net change in fair value for gains/(losses) relating to items held at end of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Transfers and Servicing [Abstract] Weighted average discount rate Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate Conditional prepayment rate (“CPR”) Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed Weighted average life in years Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Weighted Average Life Dividends paid (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Employee Stock Ownership Plan (ESOP), Shares in ESOP [Abstract] Employee Stock Ownership Plan (ESOP), Shares in ESOP [Abstract] Allocated shares Employee Stock Ownership Plan (ESOP), Number of Allocated Shares Committed to be released shares Employee Stock Ownership Plan (ESOP), Number of Committed-to-be-Released Shares Unallocated shares Employee Stock Ownership Plan (ESOP), Number of Suspense Shares Total ESOP shares Fair value of unallocated shares (in thousands) Employee Stock Ownership Plan (ESOP), Fair Value of Unallocated Shares Employee Stock Ownership Plan (ESOP), Fair Value of Unallocated Shares Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed at Acquisition Schedule of Business Acquisitions, by Acquisition [Table Text Block] Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] 1st Security Bank of Washington 1st Security Bank of Washington [Member] 1st Security Bank of Washington [Member] Investments with unrealized losses of less than one year Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Number Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Number Investments with unrealized losses of more than one year Available-for-sale Securities, Continuous Unrealized Loss Position, More Than Twelve Months, Number Available-for-sale Securities, Continuous Unrealized Loss Position, More Than Twelve Months, Number Number of securities pledged and held at FHLB Federal Home Loan Bank, Number of Securities Pledged Federal Home Loan Bank, Number of Securities Pledged Pledged securities for FHLB Pledged Financial Instruments, Not Separately Reported, Securities for Federal Home Loan Bank Public deposits Public Deposits Public Deposits Collateral requirement Deposit Liabilities, Collateral Requirement Deposit Liabilities, Collateral Requirement Other than temporary impairment losses, investments Other than Temporary Impairment Losses, Investments Securities available-for-sale, sold securities available-for-sale, sold securities available-for-sale, sold Gain on sale of available-for-sale securities Gross proceeds from sale of available-for-sale securities Available-for-sale Securities, Gross Proceeds from Sale Available-for-sale Securities, Gross Proceeds from Sale Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Asset Class [Axis] Asset Class [Axis] Assets and Liabilities [Domain] Asset Class [Domain] Financial Assets Financial Instruments, Assets [Member] Financial Instruments, Assets [Member] Financial Liabilities Financial Instruments, Liabilities [Member] Financial Instruments, Liabilities [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] Subordinated Debt, Net of Unamortized Debt Issuance Costs Cash and cash equivalents Cash FHLB stock, at cost Investment in Federal Home Loan Bank Stock, Fair Value Disclosure Accrued interest receivable Accrued Interest Receivable, Fair Value Disclosure Accrued Interest Receivable, Fair Value Disclosure Forward sale commitments with investors Paired off commitments with investors Loans receivable, gross Loans Receivable, Fair Value Disclosure Servicing rights, held at lower of cost or fair value Mortgage, Commercial and Consumer Servicing Rights, Fair Value Disclosure Mortgage, Commercial and Consumer Servicing Rights, Fair Value Disclosure Fair value interest rate locks with customers Commitments, Fair Value Disclosure Deposits Deposits, Fair Value Disclosure Borrowings Debt Instrument, Fair Value Disclosure Accrued interest payable Accrued Liabilities, Fair Value Disclosure Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Schedule of Other Real Estate Owned Other Real Estate, Roll Forward [Table 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] 2017 Time Deposit Maturities, Next Twelve Months 2018 Time Deposit Maturities, Year Two 2019 Time Deposit Maturities, Year Three 2020 Time Deposit Maturities, Year Four 2021 Time Deposit Maturities, Year Five Thereafter Time Deposit Maturities, after Year Five Total Time Deposits Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Home Lending Home Lending [Member] Home Lending [Member] Commercial and Consumer Banking Commercial and Consumer Banking [Member] Commercial and Consumer Banking [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Net interest income Provision for loan losses Noninterest income Noninterest expense Provision for income taxes Total average assets at quarter end Average Assets Average Assets FTEs Entity Number of Employees Business Combination Business Combination Disclosure [Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Guarantee on loans sold Guarantee of Indebtedness of Others [Member] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Visa, Inc. Visa, Inc. [Member] Visa, Inc. [Member] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] [Domain] for Consolidated Entities [Axis] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class B Common Stock Common Class B [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Reserve for estimated losses Loss Contingency Accrual Amount of loans sold to FHLB Sale of Loans to Federal Home Loan Bank Sale of Loans to Federal Home Loan Bank FLA established Federal Home Loan Bank, First Loss Account Established Federal Home Loan Bank, First Loss Account Established Bank recourse obligation Federal Home Loan Bank, Recourse Obligation Federal Home Loan Bank, Recourse Obligation Bank recourse obligation, percentage of loans outstanding Federal Home Loan Bank, Recourse Obligation, Percentage of Loans Outstanding Federal Home Loan Bank, Recourse Obligation, Percentage of Loans Outstanding Reserve as a percentage of outstanding CE Allowance for Loan and Lease Losses, Loans Sold, Percentage of Outstanding Credit Enhancement Allowance for Loan and Lease Losses, Loans Sold, Percentage of Outstanding Credit Enhancement Reserve for loans sold Allowance for Loan and Lease Losses, Loans Sold Outstanding Delinquencies On Loans Sold to Federal Home Loan Bank Outstanding Delinquencies On Loans Sold to Federal Home Loan Bank Outstanding Delinquencies On Loans Sold to Federal Home Loan Bank Severance agreement, period of base compensation disbursed as lump sum payment (in months) Severance Agreement, Period of Base Compensation Disbursed as Lump Sum Payment Severance Agreement, Period of Base Compensation Disbursed as Lump Sum Payment Change of control agreement, notice required to cancel agreement (in months) Change of Control Agreement, Notice Required to Cancel Agreement, Period Change of Control Agreement, Notice Required to Cancel Agreement, Period Change of control agreement, executive payment, period prior to change in control (in months) Change of Control Agreement, Executive Payment, Period Prior to Change in Control Change of Control Agreement, Executive Payment, Period Prior to Change in Control Change of control agreement, executive payment, period following change in control (in months) Change of Control Agreement, Executive Payment, Period Following Change in Control Change of Control Agreement, Executive Payment, Period Following Change in Control Change of control agreement, period of base compensation disbursed as lump sum payment (in months) Change of Control Agreement, Period of Base Compensation Disbursed as Lump Sum Payment Change of Control Agreement, Period of Base Compensation Disbursed as Lump Sum Payment Number of shares received in an IPO Investment Owned, Balance, Shares Common stock, conversion ratio Stockholders' Equity Note, Stock Split, Conversion Ratio Carrying value of stock Investment Owned, at Fair Value Market value of stock (in dollars per share) Share Price Pending material legal actions Loss Contingency, Pending Claims, Number CET 1 capital conversion buffer phased in Tier 1 leverage capital, Ratio Total risk-based capital, Ratio Financial Statement Presentation Basis of Accounting, Policy [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Segment Reporting, Policy [Policy Text Block] Segment Reporting, Policy [Policy Text Block] Subsequent Events, Policy [Policy Text Block] Subsequent Events, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Loan Portfolio Segment Loan Portfolio Segment [Policy Text Block] Loan Portfolio Segment Nonaccrual and Past Due Loans Loans and Leases Receivable, Past Due Status, Policy [Policy Text Block] Credit Quality Indicators Credit Quality Indicators [Policy Text Block] Credit Quality Indicators Derivatives Derivatives, Policy [Policy Text Block] Loan Commitments Loan Commitments, Policy [Policy Text Block] Determination of Fair Market Values Fair Value of Financial Instruments, Policy [Policy Text Block] Employee Stock Ownership Plan Employee Stock Ownership Plan (ESOP), Policy [Policy Text Block] Stock Options Equity Option [Member] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Director Director [Member] Share-based compensation expense Allocated Share-based Compensation Expense Number of shares authorized (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Market price per share (in dollars per share) Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Annual award vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Percentage Award contractual life Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Expiration period Share-based compensation arrangement by share-based payment award, unexercised, expiration date Share-based compensation arrangement by share-based payment award, unexercised, expiration date Stock option, fair value assumption, expected life Unrecognized compensation cost, nonvested awards Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Remaining weighted-average vesting period Weighted-average vesting period Summary of servicing rights activity Servicing Asset at Amortized Cost [Table Text Block] Valuation assumptions used in determining the fair value of servicing rights Fair Value Inputs, Assets, Quantitative Information [Table Text Block] Key economic assumptions and the sensitivity of the current fair value for single family mortgage servicing rights Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets [Table Text Block] Aggregate portfolio principal balance Transferor's Interests in Transferred Financial Assets, Fair Value Weighted average rate of note