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] REAL ESTATE LOANS Real Estate Loan [Member] CONSUMER LOANS Consumer Portfolio Segment [Member] COMMERCIAL BUSINESS LOANS Commercial Portfolio Segment [Member] Class of Financing Receivable [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable, Type [Domain] Commercial Commercial Real Estate [Member] Construction and development Construction Loans [Member] Home equity Home Equity Loan [Member] One-to-four-family One to Four Family Real Estate Loans [Member] -- None. No documentation exists for this element. -- Multi-family Multi Family Real Estate Loans [Member] -- None. No documentation exists for this element. -- 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 Loan, Marine [Member] Consumer Loan, Marine [Member] Other consumer Consumer Loan [Member] Commercial and industrial Commercial and industrial [Member] Commercial and industrial [Member] Warehouse lending Warehouse lending [Member] Warehouse lending [Member] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Pass (1 - 5) Pass [Member] Watch (6) Watch [Member] -- None. No documentation exists for this element. -- Special Mention (7) Special Mention [Member] Substandard (8) Substandard [Member] Doubtful(9) Doubtful [Member] Loss (10) Unlikely to be Collected Financing Receivable [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Total loans Financing Receivable, Net Schedule of Financing Receivable, Allowance for Credit Losses [Table] Real Estate Consumer Commercial Business Unallocated Unallocated Financing Receivables [Member] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] ALLOWANCE FOR LOAN LOSSES Financing Receivable, Allowance for Credit Losses [Roll Forward] Beginning balance Financing Receivable, Allowance for Credit Losses Provision for loan losses 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 Ending balance 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 LOANS RECEIVABLES 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 Total Loans Receivable Banking and Thrift [Abstract] Schedule of Other Real Estate Owned Other Real Estate, Roll Forward [Table Text Block] Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Bank of America Bank of America [Member] Bank of America [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] Acquired Book Value Portion at Other than Fair Value Measurement [Member] Fair Value Adjustments Changes Measurement [Member] Amount Recorded Reported Value Measurement [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Number of bank branches Number of Bank Branches Number of Bank Branches Acquired deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, 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 Business Combination, Number of Leases Acquired Business Combination, Number of Leases Acquired Total deposits Deposits Accrued interest for loans acquired 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 Net book value of bank facilities and other assets 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 (as a percent) 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 acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Increase in fair value adjustment of core deposit intangible Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles Core deposit intangible Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Core Deposit Intangibles Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Core Deposit Intangibles Decrease in 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 of core deposit intangible Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Goodwill Goodwill Amortization of core deposit intangible Amortization of Intangible Assets Regulatory Capital Requirements [Abstract] Regulatory Capital Regulatory Capital Requirements under Banking Regulations [Text Block] 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] Company Parent Company [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Percentage of risk-weighted assets 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 Percentage of risk-weighted assets in January 2019 Common Equity Tier 1 to Risk Weighted Assets, Capital Conservation Buffer Common Equity Tier 1 to Risk Weighted Assets, Capital Conservation Buffer Tier 1 leverage-based capital ratio (as a percent) Tier One Leverage Capital to Average Assets Tier 1 risk-based capital (as a percent) Tier One Risk Based Capital to Risk Weighted Assets Total risk-based capital (as a percent) Capital to Risk Weighted Assets CET 1 capital ratio (as a percent) Common equity Tier 1 capital ratio Common equity Tier 1 capital ratio Statement of Stockholders' Equity [Abstract] Dividends paid (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Income Tax Disclosure [Abstract] Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract] Effective Income Tax Rate Reconciliation, Amount [Abstract] Income tax provision at statutory rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Tax exempt income Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount Increase in tax resulting from other items Effective Income Tax Rate Reconciliation, Other Adjustments, Amount ESOP Income Tax Rate Reconcilation, Deductions, Employee Stock Ownership Plan and Other Income Tax Rate Reconcilation, Deductions, Employee Stock Ownership Plan and Other Total provision for income tax Income Tax Expense (Benefit) Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract] Effective Income Tax Rate Reconciliation, Percent [Abstract] Income tax provision at statutory rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Tax exempt income Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Increase in tax resulting from other items Effective Income Tax Rate Reconciliation, Other Adjustments, Percent ESOP Effective Income Tax Rate Reconcilation, Deductions, Employee Stock Ownership Plan and Other Effective Income Tax Rate Reconcilation, Deductions, Employee Stock Ownership Plan and Other Total Effective Income Tax Rate Reconciliation, Percent Nonaccrual and Past Due Loans [Abstract] Nonaccrual and Past Due Loans [Abstract] Loans and Leases Receivable, Nonperforming Loan and Lease, Policy [Policy Text Block] Loans and Leases Receivable, Nonperforming Loan and Lease, Policy [Policy Text Block] Loans Receivable and Allowance For Loan Losses Financing Receivables [Text Block] Earnings Per Share [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Net income Net Income (Loss) Attributable to Parent Basic weighted average common shares outstanding Weighted Average Number of Shares Outstanding, Basic Dilutive shares Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Diluted weighted average common shares outstanding Weighted Average Number of Shares Outstanding, Diluted Basic earnings per share (in dollars per share) Earnings Per Share, Basic Diluted earnings per share (in dollars per share) Earnings Per Share, Diluted Employee stock ownership plan shares purchased Employee Stock Ownership Plan (ESOP), Shares in ESOP Shares in ESOP that were non committed to be released Weighted Average Number of Shares, Employee Stock Ownership Plan Shares Not Committed to be Released Debt Disclosure [Abstract] Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract] Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract] 2017 Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months 2018 Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Two 2019 Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Three 2020 Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Four Total Advances from Federal Home Loan Banks Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due [Abstract] Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due [Abstract] 2017, Interest Rates (percent) Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due within One Year of Balance Sheet Date 2018, Interest Rates (percent) Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, One to Two Years from Balance Sheet Date 2019, Interest Rates (percent) Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, Two to Three Years from Balance Sheet Date 2020, Interest Rates (percent) Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, Three to Four Years from Balance Sheet Date Statement of Comprehensive Income [Abstract] Other comprehensive loss, 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 (loss) gain during year Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Income tax benefit (provision) related to unrealized holding (loss) gain Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Reclassification adjustment for realized gain included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Income tax provision related to reclassification for realized gain Other Comprehensive Income (Loss), Available-for-sale Securities, Tax Other comprehensive loss, net of tax Other Comprehensive Income (Loss), Net of Tax COMPREHENSIVE INCOME Comprehensive Income (Loss), Net of Tax, Attributable to Parent Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Securities Line Securities Line [Member] Securities Line [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] Federal home loan bank, advances, general debt obligations Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds Federal Home Loan Bank, interest rates Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End Transfers and Servicing [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] Servicing rights Mortgage Servicing RIghts (MSR) [Member] Mortgage Servicing RIghts (MSR) Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] The unpaid principal balances of mortgage loans serviced Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Asset Fair market value of mortgage servicing rights’ asset Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset Contractually specified servicing fees, late fees, and ancillary fees earned in exchange for servicing financial assets Contractually Specified Servicing Fees, Late Fees, and Ancillary Fees Earned in Exchange for Servicing Financial Assets 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] Equity Incentive Plan, 2013 Equity Incentive Plan, 2013 [Member] Equity Incentive Plan, 2013 [Member] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Stock Options Employee Stock Option [Member] Restricted Stock Awards Restricted Stock [Member] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Directors Director [Member] Employees Employee [Member] Employee [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 expense Allocated Share-based Compensation Expense Income tax benefit from share-based compensation expense Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Stock award, shares authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Price per share (in dollars per share) Share Price 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 Stock award, contractual life Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Stock awards, unexercised, expiration term Share-based compensation arrangement by share-based payment award, unexercised, expiration date Share-based compensation arrangement by share-based payment award, unexercised, expiration date Option awards granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Expected term in years Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Unrecognized compensation cost, options Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Unrecognized compensation cost, period for recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Shares available for grant Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Remaining awards granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Forfeitures and Expirations Fair Value Disclosures [Abstract] 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] Investment Type [Axis] Investment Type [Axis] Investment Type Categorization [Domain] Investments [Domain] U.S. agency securities Agency Securities [Member] Corporate securities Corporate Bond Securities [Member] Municipal bonds Municipal Bonds [Member] Mortgage-backed securities US Government Agencies Debt Securities [Member] U.S. Small Business Administration securities Other Security Investments [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] Securities available-for-sale, at fair value Available-for-sale Securities Business Combination Business Combination Disclosure [Text Block] 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 Interest Expense, Deposits Purchase price Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest Recognized amounts of identifiable assets acquired and (liabilities assumed), at fair value: Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract] Cash and cash equivalents Acquired loans Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 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 Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets 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 Total fair value of identifiable net assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivatives Derivatives and Fair Value [Text Block] Schedule of Derivative Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] 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 Mandatory and Best Effort Forward Commitments [Member] Mandatory and Best Effort Forward Commitments [Member] Forward TBA mortgage-backed securities Mortgage Backed Securities, Other [Member] TBA mortgage-backed securities forward sales paired off with investors Mortgage Backed Securities, Forward Sales Paired Off With Investors [Member] Mortgage Backed Securities, Forward Sales Paired Off With Investors [Member] Derivative [Line Items] Derivative [Line Items] Notional Derivative, Notional Amount Fair Value, Asset Interest Rate Derivative Assets, at Fair Value Fair Value, Liability Interest Rate Derivative Liabilities, at Fair Value Derivatives, fair value changes, gain on sale of loans Derivative, Gain (Loss) on Derivative, Net Property, Plant and Equipment [Abstract] Schedule of Operating Leased Assets [Table] Schedule of Operating Leased Assets [Table] Operating Leased Assets [Line Items] Operating Leased Assets [Line Items] Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2017 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2018 Operating Leases, Future Minimum Payments, Due in Two Years 2019 Operating Leases, Future Minimum Payments, Due in Three Years 2020 Operating Leases, Future Minimum Payments, Due in Four Years 2021 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due Operating lease, renewal term Lessee Leasing Arrangements, Operating Leases, Renewal Term Rental expense of leased premises Operating Leases, Rent Expense, Net Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table] Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table] RECURRING NONRECURRING Fair Value, Measurements, Nonrecurring [Member] Interest rate lock commitments with customers Individual forward sale commitments with investors Forward Contracts [Member] Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Quoted market prices Quoted Market Prices [Member] Quoted Market Prices [Member] Fair value of underlying collateral Fair Value of Underlying Collateral [Member] Fair Value of Underlying Collateral [Member] Weighted Average Weighted Average [Member] Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] Discount rate Fair Value Inputs, Discount Rate Deferred Tax Assets Components of Deferred Tax Assets [Abstract] Allowance for loan losses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses Non-accrued loan interest Deferred Tax Assets, Non-accrued Loan Interest Deferred Tax Assets, Non-accrued Loan Interest Restricted stock awards Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Non-qualified stock options Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation Securities available-for-sale Deferred Tax Assets, Unrealized Losses on Trading Securities Other Deferred Tax Assets, Other Total deferred tax assets Deferred Tax Assets, Gross Deferred Tax Liabilities Components of Deferred Tax Liabilities [Abstract] Loan origination costs Deferred Tax Liabilities, Loan Orgination Costs Deferred Tax Liabilities, Loan Orgination Costs Servicing rights Deferred Tax Liabilities, Mortgage Servicing Rights Prepaids Deferred Tax Liabilities, Prepaid Expenses Stock dividend - FHLB stock Deferred Tax Liabilities, Stock Dividend Deferred Tax Liabilities, Stock Dividend Securities available-for-sale Deferred Tax Liabilities, Unrealized Gains on Trading Securities Property, plant, and equipment Deferred Tax Liabilities, Property, Plant and Equipment Total deferred tax liabilities Deferred Tax Liabilities, Gross Net deferred tax liabilities Deferred Tax Liabilities, Net Accounting Policies [Abstract] Financial Statement Presentation Basis of Accounting, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Segment Reporting Segment Reporting, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block] Securities Available-for-Sale Marketable Securities, Available-for-sale Securities, Policy [Policy Text Block] Federal Home Loan Bank Stock Cost Method Investments, Policy [Policy Text Block] Loans Held for Sale Finance, Loan and Lease Receivables, Held-for-sale, Policy [Policy Text Block] Derivatives Derivatives, Policy [Policy Text Block] Loans Receivable Finance, Loan and Lease Receivables, Held-for-investment, Policy [Policy Text Block] Impaired Loans Impaired Financing Receivable, Policy [Policy Text Block] Troubled Debt Restructured Loans Loans and Leases Receivable, Troubled Debt Restructuring Policy [Policy Text Block] Allowance for Loan Losses Finance, Loan and Lease Receivables, Held-for-investment, Allowance and Nonperforming Loans, Allowance Policy [Policy Text Block] Reserve for Unfunded Loan Commitments Commitments and Contingencies, Policy [Policy Text Block] Premises and Equipment, Net Property, Plant and Equipment, Policy [Policy Text Block] Transfers of Financial Assets and Servicing Rights Transfers and Servicing of Financial Assets, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Employee Stock Ownership Plan (ESOP) Employee Stock Ownership Plan (ESOP), Policy [Policy Text Block] Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Comprehensive Income (Loss) Comprehensive Income, Policy [Policy Text Block] Financial Instruments Financial Instruments, Policy [Policy Text Block] Financial Instruments, Policy [Policy Text Block] Restricted Assets Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Marketing and Advertising Costs Advertising Costs, Policy [Policy Text Block] Stock-Baed Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Application of New Accounting Guidance and Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Securities Available-for-Sale Investment, Policy [Policy Text Block] Loan Portfolio Segment Loan Portfolio Segment [Policy Text Block] Loan Portfolio Segment Credit Quality Indicators Credit Quality Indicators [Policy Text Block] Credit Quality Indicators 401 (k) Plan Pension and Other Postretirement Plans, Policy [Policy Text Block] Loan Commitments Loan Commitments, Policy [Policy 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] Schedule of Mortgage Servicing Rights Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block] Fair Value Inputs, Assets, Quantitative Information Fair Value Inputs, Assets, Quantitative Information [Table Text Block] 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] Investments, Debt and Equity Securities [Abstract] 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] Corporate securities Corporate Debt Securities [Member] Municipal bonds 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] Contractual Maturity [Axis] Contractual Maturity [Axis] -- None. No documentation exists for this element. -- Contractual Maturity 1 [Domain] Contractual Maturity 1 [Domain] -- None. No documentation exists for this element. -- Total securities contractual maturity [Member] Total securities contractual maturity [Member] -- None. No documentation exists for this element. -- Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale 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 Available-for-sale Securities, Debt Securities Compensation and Retirement Disclosure [Abstract] Schedule of Defined Contribution Plans Disclosures [Table] Schedule of Defined Contribution Plans Disclosures [Table] Defined Contribution Plan, Contribution Match Category [Axis] Defined Contribution Plan, Contribution Match Category [Axis] Defined Contribution Plan, Contribution Match Category [Axis] Defined Contribution Plan, Contribution Match Category [Domain] Defined Contribution Plan, Contribution Match Category [Domain] [Domain] for Defined Contribution Plan, Contribution Match Category [Axis] Contributions between 1% to 3% Defined Contribution Pension, Contribution Group One [Member] Defined Contribution Pension, Contribution Group One [Member] Contributions between 4% and 5% Defined Contribution Pension, Contribution Group Two [Member] Defined Contribution Pension, Contribution Group Two [Member] Schedule of Defined Contribution Plans Disclosures [Line Items] [Line Items] for Schedule of Defined Contribution Plans Disclosures [Table] Defined contribution plan, minimum age requirement Defined Contribution Plan, Minimum Age Requirement Defined Contribution Plan, Minimum Age Requirement Percentage vested in deferral contributions account Defined Contribution Plan, Award Vested, Percent Defined Contribution Plan, Award Vested, Percent Employer matching percentage Defined Contribution Plan, Employer Matching Contribution, Percent of Match Defined contribution plan, employee contribution (percent) Defined Contribution Plan, Contribution by Employee, Percent Defined Contribution Plan, Contribution by Employee, Percent Employer contributions Defined Contribution Plan, Employer Discretionary Contribution Amount Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Premises and Equipment Property, Plant and Equipment and Operating Leases of Lessee Disclosure [Text Block] Property, Plant and Equipment and Operating Leases of Lessee Disclosure [Text Block] Provision for income taxes Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] Current Current Income Tax Expense (Benefit) Deferred Deferred Income Tax Expense (Benefit) Schedule of Stock Option Awards Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of Nonvested Awards Schedule of Nonvested Share Activity [Table Text Block] Related-party deposits Related Party Deposit Liabilities 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 (Loss) Income AOCI Attributable to Parent [Member] Unearned ESOP Shares Unearned Employee Stock Option Plan (ESOP) Shares [Member] Unearned Employee Stock Option Plan (ESOP) Shares [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance at beginning of period (in shares) Shares, Outstanding Balance at beginning of period Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Dividends paid Dividends, Common Stock, Cash Share-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Restricted stock awards (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Restricted stock awards Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Common stock repurchase (in shares) Stock Repurchased During Period, Shares Common stock repurchase Stock Repurchased During Period, Value Stock options exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Stock options exercised Stock Issued During Period, Value, Stock Options Exercised Other comprehensive loss, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Excess tax benefits of stock compensation Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation ESOP shares allocated Stock Issued During Period, Value, Employee Stock Ownership Plan Balance at end of period (in shares) Balance at end of period Loans held for sale, at fair value Loans Held-for-sale, Fair Value Disclosure Schedule of Available For Sale Securities Measured at Fair Value on 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 Commitments at Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Valuation Allowance for Impairment of Recognized Servicing Assets Schedule of Valuation Allowance for Impairment of Recognized Servicing Assets [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] 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 Income Statement [Abstract] INTEREST INCOME Revenues [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 INTEREST EXPENSE Interest Expense [Abstract] 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 NONINTEREST INCOME Noninterest Income [Abstract] 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 Investments Earnings on cash surrender value of BOLI Bank Owned Life Insurance Income Other noninterest income Noninterest Income, Other Total noninterest income Noninterest Income NONINTEREST EXPENSE Noninterest Expense [Abstract] 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”) Impairment of Real Estate, Net of Gain (Loss) on Sale Impairment of Real Estate, Net of Gain (Loss) on Sale 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 Recovery 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 NET INCOME Schedule of Premises and Equipment Property, Plant and Equipment [Table Text Block] Schedule of Future Minimum Rental Payments for Operating Leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] 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 Excess tax benefits of stock compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Provision for deferred income taxes Increase in cash surrender value of BOLI Gain on sale of loans and loans held for sale Gain (Loss) on Sale of Loans and Loans Held-for-Sale Gain (Loss) on Sale of Loans and Loans Held-for-Sale 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 Loans Held-for-sale Gain on sale of investment securities Gain (Loss) on Sale of Investments Recovery on servicing rights Gain on sale of OREO Gains (Losses) on Sales of Other Real Estate 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 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] Proceeds from sale of investment securities Proceeds from Sale of Available-for-sale Securities Maturities, prepayments, sales, and calls Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Purchases Payments for (Proceeds from) Investments Maturities of certificates of deposit at other financial institutions 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 Payments for purchase of portfolio loans Payments for purchase of portfolio loans Proceeds from sale of OREO, net Proceeds from Sale of Wholly Owned Real Estate and Real Estate Acquired in Settlement of Loans Purchase of BOLI Payments to Acquire Bank Owned Life Insurance Payments to Acquire Bank Owned Life Insurance 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 Net cash received from acquisition Cash Acquired from Acquisition Net cash from (used by) investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities [Abstract] Net increase in deposits Increase (Decrease) in Deposits Proceeds from borrowings Proceeds from Federal Home Loan Bank Borrowings Repayments of borrowings Repayments of Federal Home Loan Bank Borrowings Proceeds from subordinated note Proceeds from Issuance of Subordinated Long-term 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 (used by) from financing activities Net Cash Provided by (Used in) Financing Activities NET INCREASE IN CASH AND CASH EQUIVALENTS Cash and Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect CASH AND CASH EQUIVALENTS, beginning of year Cash and Cash Equivalents, at Carrying Value CASH AND CASH EQUIVALENTS, end of year SUPPLEMENTARY DISCLOSURES OF CASH FLOW INFORMATION Supplemental Cash Flow Information [Abstract] Cash paid during the year for: Supplemental Disclosures of Cash Flow Information, Cash Payments [Roll Forward] Supplemental Disclosures of Cash Flow Information, Cash Payments [Roll Forward] Interest Interest Paid, Net Income taxes Income Taxes Paid Assets acquired in acquisition of branches (Note 2) Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Liabilities assumed in acquisition of branches (Note 2) Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities SUPPLEMENTARY DISCLOSURES OF NONCASH INVESTING AND FINANCING ACTIVITIES Noncash Investing and Financing Items [Abstract] Change in unrealized loss 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 mortgage servicing rights from loan sales Retention of Mortgage Servicing Rights from Loan Sales Retention of Mortgage Servicing Rights from Loan Sales Proceeds Available-for-sale Securities, Gross Proceeds from Sale Available-for-sale Securities, Gross Proceeds from Sale Gross Gains Available-for-sale Securities, Gross Gains Available-for-sale Securities, Gross Gains Gross Losses Available-for-sale Securities, Gross Losses Available-for-sale Securities, Gross Losses 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. -- Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Servicing Rights Fair Value, Off-balance Sheet Risks Disclosure [Text Block] Fair Value, Off-balance Sheet Risks Disclosure [Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Collateral Security, Type [Axis] Collateral Security, Type [Axis] Collateral Security, Type [Axis] Collateral Security, Type [Domain] Collateral Security, Type [Domain] [Domain] for Collateral Security, Type [Axis] Federal Reserve Bank Federal Reserve Bank [Member] Federal Reserve Bank [Member] Lender Name [Axis] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Subordinated Note Six Point Five Percent Subordinated Note due October 1, 2025 [Member] Six Point Five Percent Subordinated Note due October 1, 2025 [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Federal home loan bank, advances, general debt obligations, maximum amount available, percentage of total assets Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available, Percenage Of Total Assets Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available, Percenage Of Total Assets Federal home loan bank, advances, general debt obligations, collateral pledged Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged Federal home loan bank, advances, general debt obligations, unused capacity on pledged loans Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged, Unused Capacity on Pledged Loans Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged, Unused Capacity on Pledged Loans Loans pledged as collateral Loans Pledged as Collateral Warehouse lines of credit Line of Credit Facility, Maximum Borrowing Capacity Line of credit, outstanding balance Line of Credit Facility, outstanding balance Line of Credit Facility, outstanding balance Unsecured Fed Funds lines of credit Unsecured Fed Funds Line of Credit Unsecured Fed Funds Line of Credit Unsecured Fed Funds, lines of credit, outstanding balance Unsecured Fed Funds, lines of credit, outstanding balance Unsecured Fed Funds, lines of credit, outstanding balance Principal amount of subordinated debt Subordinated Debt Annual interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Contributions of proceeds from subordinated debt Contributions of Proceeds from Subordinated Debt Contributions of Proceeds from Subordinated Debt 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] 30-59 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] Construction and development Financing Receivable, Recorded Investment, Past Due [Line Items] Past Due Financing Receivable, Recorded Investment, Past Due Current Financing Receivable, Recorded Investment, Current Non-Accrual Financing Receivable, Recorded Investment, Nonaccrual Status Loans 90 days or more past due and still accruing interest Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Unpaid Principal Balance Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Write- downs Impaired Financing Receivable, with No Related Allowance, Write-downs Impaired Financing Receivable, with No Related Allowance, Write-downs Recorded Investment Impaired Financing Receivable, with No Related Allowance, Recorded Investment Related Allowance Impaired Financing Receivable, Related Allowance Average Recorded Investment Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Interest Income Recognized Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Interest Rate Lock Commitments with Customers Individual Forward Sale Commitments with Investors Forward Sale Commitments, Asset, at Fair Value Forward Sale Commitments, Asset, at Fair Value Paired Off Commitments with Investors Paired Off Commitments, Asset, at Fair Value Paired Off Commitments, Asset, at Fair Value Amortized Cost Available-for-sale Securities, Amortized Cost Basis Unrealized Gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Unrealized Losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Estimated Fair Values Schedule of Shares Under ESOP Employee Stock Ownership Plan (ESOP) Disclosures [Table Text Block] Income Taxes Income Tax Disclosure [Text Block] Bank Subsidiaries [Member] Total risk-based capital Capital Total Risk-Based Capital ratios Capital Required for Capital Adequacy Capital Required for Capital Adequacy Capital Required for Capital Adequacy to Risk Weighted Assets Capital Required for Capital Adequacy to Risk Weighted Assets Capital Required to be Well Capitalized Capital Required to be Well Capitalized Capital Required to be Well Capitalized to Risk Weighted Assets Capital Required to be Well Capitalized to Risk Weighted Assets Tier One Risk Based Capital Tier One Risk Based Capital Tier 1 Risk- Based Capital Ratio Tier One Risk Based Capital Required for Capital Adequacy Tier One Risk Based Capital Required for Capital Adequacy Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Tier One Risk Based Capital Required to be Well Capitalized Tier One Risk Based Capital Required to be Well Capitalized Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Tier One Leverage Capital Tier One Leverage Capital Tier 1 Leverage-Based Capital Ratio Tier One Leverage Capital Required for Capital Adequacy Tier One Leverage Capital Required for Capital Adequacy Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier One Leverage Capital Required to be Well Capitalized Tier One Leverage Capital Required to be Well Capitalized Tier One Leverage Capital Required to be Well Capitalized to Average Assets Tier One Leverage Capital Required to be Well Capitalized to Average Assets Common Equity Tier 1 Capital Common Equity Tier 1 Capital Common Equity Tier 1 Capital Common equity Tier 1 capital ratio Common Equity Tier 1 Capital Required for Capital Adequacy Common Equity Tier 1 Capital Required for Capital Adequacy Common Equity Tier 1 Capital Required for Capital Adequacy Common Equity Tier 1 Capital Required for Capital Adequacy, Percent Common Equity Tier 1 Capital Required for Capital Adequacy, Percent Common Equity Tier 1 Capital Required for Capital Adequacy, Percent Common Equity Tier 1 Capital Required to be Well Capitalized Common Equity Tier 1 Capital Required to be Well Capitalized Common Equity Tier 1 Capital Required to be Well Capitalized Common Equity Tier 1 Capital Required to be Well Capitalized, Percent Common Equity Tier 1 Capital Required to be Well Capitalized, Percent Common Equity Tier 1 Capital Required to be Well Capitalized, Percent Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding, beginning balance, Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted, Shares Exercised, Shares Forfeited or Expired, Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Outstanding, ending balance, Shares Expected to vest, assuming a 0.31% annual forfeiture rate, Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Exercisable, ending balance, Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Annual forfeiture rate (percent) 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, Outstanding, Weighted Average Exercise Price [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Outstanding, beginning balance, Weighted-Average Exercise Price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted, Weighted-Average Exercise Price (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercised, Weighted-Average Exercise Price (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Forfeited or Expired, Weighted-Average Exercise Price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Outstanding, ending balance, Weighted-Average Exercise Price (in dollars per share) Expected to vest, assuming a 0.31% annual forfeiture rate, Weighted-Average Exercise Price (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, ending balance, Weighted-Average Exercise Price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price 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] Share-based Compensation Arrangement by Share-based Payment Award, Weighted Average Remaining Contractual Term [Abstract] Outstanding, ending balance, Weighted Average Remaining Contractual Term 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, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Exercisable, ending balance, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 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] Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Outstanding, beginning balance, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Granted, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value Exercised, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Forfeited or Expired, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Intrinsic Value Outstanding, ending balance, Aggregate Intrinsic Value Expected to vest, assuming a 0.31% annual forfeiture rate, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Exercisable, ending balance, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Debt Debt Disclosure [Text Block] Earnings Per Share Earnings Per Share [Text Block] Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Risks and Uncertainties [Abstract] Significant Concentration of Credit Risk Concentration Risk Disclosure [Text Block] Other Real Estate Owned Real Estate Owned [Text Block] Schedule of Available-for-sale Securities Reconciliation Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Available-for-sale Securities, Gross Unrealized Loss Schedule of Unrealized Loss on Investments [Table Text Block] Schedule of Available for Sale Securities by Contractual Mataurity Investments Classified by Contractual Maturity Date [Table Text Block] Schedule of Realized Gain (Loss) Schedule of Realized Gain (Loss) [Table Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [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 year Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings 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 Unallocated Shares Employee Stock Ownership Plan, ESOP, Number of Unallocated 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 Composition of Loan Portfolio Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Allowance for Credit Losses on Financing Receivablles 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] Troubled Debt Restructurings on Financing Receivables Troubled Debt Restructurings on Financing Receivables [Table Text Block] Schedule of Related Party Loans Schedule of Related Party Transactions [Table Text Block] Securities Available-for-sale Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [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 Entity Current Reporting Status Entity Current Reporting Status Entity Voluntary Filers Entity Voluntary Filers Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Public Float Entity Public Float Schedule of Managing of Risks Inherent in Servicing Assets and Servicing Liabilities [Table] Schedule of Managing of Risks Inherent in Servicing Assets and Servicing Liabilities [Table] Mortgage Servicing Rights Mortgage, Commercial and Consumer Servicing RIghts [Member] Mortgage, Commercial and Consumer Servicing RIghts [Member] Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items] Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items] Aggregate portfolio principal balance Transferor's Interests in Transferred Financial Assets, Fair Value Weighted average rate of note (as a percent) Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Weighted Average Rate of Note Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Weighted Average Rate of Note Base, Conditional Prepayment Rate (as a percent) Base, Conditional Prepayment Rate, Fair Value MSR Servicing Asset at Fair Value, Amount Base, Percentage of MSR Servicing Liability at Fair Value, Single Family Mortgage Servicing Rights as a Percentage of Aggregate Portfolio Principal Balance Servicing Liability at Fair Value, Single Family Mortgage Servicing Rights as a Percentage of Aggregate Portfolio Principal Balance Base, Discount rate (as a percent) 0.5% Adverse Change, Conditional Prepayment Rate (as a percent) Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Conditional Repayment Rate After 0.5% Adverse Change in Note Rate Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Conditional Repayment Rate After 0.5% Adverse Change in Note Rate 0.5% Adverse Change, Conditional Prepayment Rate, Fair Value MSR Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Amount After 0.5% Adverse Change in Note Rate Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Amount After 0.5% Adverse Change in Note Rate 0.5% Adverse Change, Conditional Prepayment Rate, Percentage of MSR (as a percent) Servicing Liability at Fair Value, Single Family Mortgage Servicing Rights as a Percentage of Aggregate Portfolio Principal Balance, After 0.5% Adverse Change in Note Rate Servicing Liability at Fair Value, Single Family Mortgage Servicing Rights as a Percentage of Aggregate Portfolio Principal Balance, After 0.5% Adverse Change in Note Rate 0.5% Adverse Change, Discount Rate (as a percent) Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Discount Rate After 0.5% Adverse Change in Note Rate Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Discount Rate After 0.5% Adverse Change in Note Rate 0.5% Adverse Change, Discount Rate, Fair Value MSR Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Amount After 0.5% Adverse Change in Discount Rate Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Amount After 0.5% Adverse Change in Discount Rate 0.5% Adverse Change, Discount Rate, Percentage of MSR (as a percent) Servicing Liability at Fair Value, Single Family Mortgage Servicing Rights as a Percentage of Aggregate Portfolio Principal Balance, After 0.5% Adverse Change in Discount Rate Servicing Liability at Fair Value, Single Family Mortgage Servicing Rights as a Percentage of Aggregate Portfolio Principal Balance, After 0.5% Adverse Change in Discount Rate 1.0% Adverse Change, Conditional Prepayment Rate (as a percent) Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Conditional Repayment Rate After 1% Adverse Change in Note Rate Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Conditional Repayment Rate After 1% Adverse Change in Note Rate 1.0% Adverse Change, Conditional Prepayment Rate, Fair Value MSR Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Amount After 1% Adverse Change in Note Rate Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Amount After 1% Adverse Change in Note Rate 1.0% Adverse Change, Conditional Prepayment Rate, Percentage of MSR (as a percent) Servicing Liability at Fair Value, Single Family Mortgage Servicing Rights as a Percentage of Aggregate Portfolio Principal Balance, After 1% Adverse Change in Note Rate Servicing Liability at Fair Value, Single Family Mortgage Servicing Rights as a Percentage of Aggregate Portfolio Principal Balance, After 1% Adverse Change in Note Rate 1.0% Adverse Change, Discount Rate (as a percent) Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Discount Rate After 1% Adverse Change in Note Rate Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Discount Rate After 1% Adverse Change in Note Rate 1.0% Adverse Change, Discount Rate, Fair Value MSR Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Amount After 1% Adverse Change in Discount Rate Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Amount After 1% Adverse Change in Discount Rate 1.0% Adverse Change, Discount Rate, Percentage of MSR (as a percent) Servicing Liability at Fair Value, Single Family Mortgage Servicing Rights as a Percentage of Aggregate Portfolio Principal Balance, After 1% Adverse Change in Discount Rate Servicing Liability at Fair Value, Single Family Mortgage Servicing Rights as a Percentage of Aggregate Portfolio Principal Balance, After 1% Adverse Change in Discount Rate Schedule of Financing Receivable, Allowance for Credit Losses [Table] Class of Financing Receivable [Axis] Total loans Loans and Leases Receivable, Gross Allowance for loan losses Loans and Leases Receivable, Allowance Deferred costs, fees, and discounts, net Loans and Leases Receivable, Deferred Income Total loans receivable, net Loans Receivable, Net Number of loan portfolio segments Number of Loan Portfolio Segments Number of Loan Portfolio Segments Number of families Mortgage Loans on Real Estate, Number of Families Mortgage Loans on Real Estate, Number of Families Noninterest-bearing checking Noninterest-bearing Domestic Deposit, Checking Interest-bearing checking Interest-bearing Domestic Deposit, Checking Savings Deposits, Savings Deposits Money market Deposits, Money Market Deposits Certificates of deposit less than $100,000(2) 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(3) 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 acquired Brokered deposits Certificate of Deposit, Brokered Certificate of Deposit, Brokered Loans and Leases Receivable, Related Parties [Roll Forward] Loans and Leases Receivable, Related Parties [Roll Forward] Beginning balance Loans and Leases Receivable, Related Parties Additions Loans and Leases Receivable, Related Parties, Additions Repayments Loans and Leases Receivable, Related Parties, Proceeds Ending balance Aggregate loan balances of extended credit Loans and Leases Receivable, Commitment to Lend, Related Party Loans and Leases Receivable, Commitment to Lend, Related Party Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Accrual Status Accruing Financing Receivables [Member] Accruing Financing Receivables [Member] Non-accrual Status Non Accrual Financing Receivables [Member] Non Accrual Financing Receivables [Member] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Number of TDR loans Financing Receivable, Modifications, Number of Contracts TDR loan balances Financing Receivable, Modifications, Recorded Investment Number of commitments to lend additional funds on impaired loans. Financing Receivable, Modifications, Number of Contracts with Additional Funding Commitments Financing Receivable, Modifications, Number of Contracts with Additional Funding Commitments Number of TDR loans, subsequently defaulted Financing Receivable, Modifications, Subsequent Default, Number of Contracts Mortgage loan collateralized in process of foreclosure Mortgage Loans in Process of Foreclosure, Amount 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 (in 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 Forfeited or expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited 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)