Receivables [Abstract] Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] Financial Asset, Period Past Due [Axis] Financial Asset, Period Past Due [Axis] Financial Asset, Period Past Due [Domain] Financial Asset, Period Past Due [Domain] Current Financial Asset, 1 to 29 Days Past Due [Member] 30-59 days past due Financial Asset, 30 to 59 Days Past Due [Member] 60-89 days past due Financial Asset, 60 to 89 Days Past Due [Member] 90 days past due Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Consumer loans [Member] Consumer Portfolio Segment [Member] Commercial loans [Member] Commercial Portfolio Segment [Member] Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Single family [Member] Residential Mortgage [Member] Home equity and other [Member] Home Equity Line of Credit [Member] Non-owner occupied commercial real estate [Member] Non Owner Occupied Commercial Real Estate [Member] Non Owner Occupied Commercial Real Estate [Member] Multifamily [Member] Multifamily Residential [Member] Residential multifamily property. Multifamily Construction [Member] Multifamily Construction [Member] Multifamily Construction [Member] Commercial Real Estate Construction [Member] Commercial Real Estate Construction [Member] Commercial Real Estate Construction [Member] Single Family Construction [Member] Single Family Construction [Member] Single Family Construction [Member] Single Family Construction To Permanent [Member] Single Family Construction To Permanent [Member] Single Family Construction To Permanent [Member] Single Family Construction To Permanent [Member] Single Family Construction To Permanent1 [Member] Single Family Construction To Permanent1 [Member] Owner occupied commercial real estate [Member] Owner Occupied Commercial Real Estate [Member] Owner Occupied Commercial Real Estate [Member] Commercial business [Member] Commercial Loan [Member] Commercial business Commercial Loan1 [Member] Commercial Loan1 [Member] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] 1-4 Good Asset Quality Review Risk Ratings One Through Four [Member] Asset Quality Review Risk Ratings One Through Four [Member] 5 - Acceptable Asset Quality Review Risk Rating Five [Member] Asset Quality Review Risk Rating Five [Member] 6 - Watch Asset Quality Review Risk Rating Six [Member] Asset Quality Review Risk Rating Six [Member] 7- Special Mention Asset Quality Review Risk Rating Seven [Member] Asset Quality Review Risk Rating Seven [Member] 8 - Substandard Asset Quality Review Risk Rating Eight [Member] Asset Quality Review Risk Rating Eight [Member] Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] Financing receivable, originated in 2020 Financing Receivable, Originated in Current Fiscal Year Financing receivable, originated in 2019 Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year Financing receivable, originated in 2018 Financing Receivable, Originated Two Years before Latest Fiscal Year Financing receivable, originated in 2017 Financing Receivable, Originated Three Years before Latest Fiscal Year Financing receivable, originated in 2016 Financing Receivable, Originated Four Years before Latest Fiscal Year Financing receivable, originated in 2015 and prior Financing Receivable, Originated Five or More Years before Latest Fiscal Year Financing receivable, revolving Financing Receivable, Revolving Financing receivable, revolving, term Financing Receivable, Revolving, Term Financing Receivable, Revolving, Term Total Financing Receivable, before Allowance for Credit Loss Financing receivable, originated in 2020, allowance for credit loss, charge-offs Financing Receivable, Originated In Current Fiscal Year, Allowance For Credit Loss, Writeoff Financing Receivable, Originated In Current Fiscal Year, Allowance For Credit Loss, Writeoff Financing receivable, originated in 2019, allowance for credit loss, charge-offs Financing Receivable, Originated In Fiscal Year Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff Financing Receivable, Originated In Fiscal Year Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff Financing receivable, originated in 2018, allowance for credit loss, charge-offs Financing Receivable, Originated Two Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff Financing Receivable, Originated Two Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff Financing receivable, originated in 2017, allowance for credit loss, charge-offs Financing Receivable, Originated Three Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff Financing Receivable, Originated Three Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff Financing receivable, originated in 2016, allowance for credit loss, charge-offs Financing Receivable, Originated Four Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff Financing Receivable, Originated Four Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff Financing receivable, originated in 2015 and prior, allowance for credit loss, charge-offs Financing Receivable, Originated Five Or More Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff Financing Receivable, Originated Five Or More Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff Financing receivable, revolving, allowance for credit loss, charge-offs Financing Receivable, Revolving, Allowance For Credit Loss, Writeoff Financing Receivable, Revolving, Allowance For Credit Loss, Writeoff Financing receivable, revolving, term, allowance for credit loss, charge-offs Financing Receivable, Revolving, Term, Allowance For Credit Loss, Writeoff Financing Receivable, Revolving, Term, Allowance For Credit Loss, Writeoff Financing receivable, allowance for credit loss, charge-offs Financing Receivable, Allowance for Credit Loss, Writeoff Financing receivable, originated in 2020, allowance for credit loss, recoveries Financing Receivable, Originated In Current Fiscal Year, Allowance For Credit Loss, Recovery Financing Receivable, Originated In Current Fiscal Year, Allowance For Credit Loss, Recovery Financing receivable, originated in 2019, allowance for credit loss, recoveries Financing Receivable, Originated In Fiscal Year Before Latest Fiscal Year, Allowance For Credit Loss, Recovery Financing Receivable, Originated In Fiscal Year Before Latest Fiscal Year, Allowance For Credit Loss, Recovery Financing receivable, originated in 2018, allowance for credit loss, recoveries Financing Receivable, Originated Two Years Before Latest Fiscal Year, Allowance For Credit Loss, Recovery Financing Receivable, Originated Two Years Before Latest Fiscal Year, Allowance For Credit Loss, Recovery Financing receivable, originated in 2017, allowance for credit loss, recoveries Financing Receivable, Originated Three Years Before Latest Fiscal Year, Allowance For Credit Loss, Recovery Financing Receivable, Originated Three Years Before Latest Fiscal Year, Allowance For Credit Loss, Recovery Financing receivable, originated in 2016, allowance for credit loss, recoveries Financing Receivable, Originated Four Years Before Latest Fiscal Year, Allowance For Credit Loss, Recovery Financing Receivable, Originated Four Years Before Latest Fiscal Year, Allowance For Credit Loss, Recovery Financing receivable, originated in 2015 and prior, allowance for credit loss, recoveries Financing Receivable, Originated Five Or More Years Before Latest Fiscal Year, Allowance For Credit Loss, Recovery Financing Receivable, Originated Five Or More Years Before Latest Fiscal Year, Allowance For Credit Loss, Recovery Financing receivable, revolving, allowance for credit loss, recoveries Financing Receivable, Revolving, Allowance For Credit Loss, Recovery Financing Receivable, Revolving, Allowance For Credit Loss, Recovery Financing receivable, revolving, term, allowance for credit loss, recoveries Financing Receivable, Revolving, Term, Allowance For Credit Loss, Recovery Financing Receivable, Revolving, Term, Allowance For Credit Loss, Recovery Financing receivable, allowance for credit loss, recoveries Financing Receivable, Allowance for Credit Loss, Recovery Financing receivable, originated in 2020, allowance for credit loss, (charge-offs) recoveries Financing Receivable, Originated in Current Fiscal Year, Allowance For Credit Loss, Writeoff, After Recovery Financing Receivable, Originated in Current Fiscal Year, Allowance For Credit Loss, Writeoff, After Recovery Financing receivable, originated in 2019, allowance for credit loss, (charge-offs) recoveries Financing Receivable, Originated In Fiscal Year Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff, After Recovery Financing Receivable, Originated In Fiscal Year Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff, After Recovery Financing receivable, originated in 2018, allowance for credit loss, (charge-offs) recoveries Financing Receivable, Originated Two Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff, After Recovery Financing Receivable, Originated Two Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff, After Recovery Financing receivable, originated in 2017, allowance for credit loss, (charge-offs) recoveries Financing Receivable, Originated Three Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff, After Recovery Financing Receivable, Originated Three Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff, After Recovery Financing receivable, originated in 2016, allowance for credit loss, (charge-offs) recoveries Financing Receivable, Originated Four Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff, After Recovery Financing Receivable, Originated Four Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff, After Recovery Financing receivable, originated in 2015 and prior, allowance for credit loss, (charge-offs) recoveries Financing Receivable, Originated Five Or More Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff, After Recovery Financing Receivable, Originated Five Or More Years Before Latest Fiscal Year, Allowance For Credit Loss, Writeoff, After Recovery Financing receivable, revolving, allowance for credit loss, (charge-offs) recoveries Financing Receivable, Revolving, Allowance For Credit Loss, Writeoff, After Recovery Financing Receivable, Revolving, Allowance For Credit Loss, Writeoff, After Recovery Financing receivable, revolving, term, allowance for credit loss, (charge-offs) recoveries Financing Receivable, Revolving, Term, Allowance For Credit Loss, Writeoff, After Recovery Financing Receivable, Revolving, Term, Allowance For Credit Loss, Writeoff, After Recovery Financing receivable, allowance for credit loss, (charge-offs) recoveries Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery Fair Value Disclosures [Abstract] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Measurement Input Type [Axis] Measurement Input Type [Axis] Measurement Input Type [Domain] Measurement Input Type [Domain] Measurement Input, Fall-Out Factor [Member] Measurement Input, Fall-Out Factor [Member] Measurement Input, Fall-Out Factor [Member] Measurement Input, Value Of Servicing [Member] Measurement Input, Value Of Servicing [Member] Measurement Input, Value Of Servicing [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Recurring [Member] Fair Value, Recurring [Member] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Interest rate lock and purchase loan commitments [Member] Interest Rate Lock Commitments [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Weighted average [Member] Weighted Average [Member] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Interest rate lock and purchase loan commitments, net, fair value Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Interest rate lock and purchase loan commitments, net, measurement input Derivative Asset, Measurement Input Revenue from Contract with Customer [Abstract] Percentage of revenue streams in scope with ASU 2014-09 Revenue Recognition, Percentage Of Revenue In Scope With Accounting Standard Update 2014-09 Revenue Recognition, Percentage Of Revenue In Scope With Accounting Standard Update 2014-09 Mortgage Banking [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Loans serviced for others Continuing Involvement with Transferred Financial Assets, Principal Amount Outstanding Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] Performing Financial Instruments [Member] Performing Financial Instruments [Member] Industry Sector [Axis] Industry Sector [Axis] Industry Sector [Domain] Industry Sector [Domain] Real Estate Sector [Member] Real Estate Sector [Member] Commercial and Industrial Sector [Member] Commercial and Industrial Sector [Member] Construction/land development [Member] Construction Loans [Member] Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Total loans before allowance, net deferred loan fees and costs Nonaccrual Financing Receivable, Nonaccrual Fair value of loans held for investment Loans Receivable, Fair Value Disclosure Net deferred loans fees and costs Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums Derivative Instruments and Hedging Activities Disclosure [Abstract] Notional amount and fair value for derivatives Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Fair value, concentration of risk Fair Value, Concentration of Risk [Table Text Block] Net gains (losses) recognized on economic hedge derivatives Derivative Instruments, Gain (Loss) [Table Text Block] Investments, Debt and Equity Securities [Abstract] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Residential mortgage-backed securities [Member] Residential Mortgage Backed Securities [Member] Commercial mortgage-backed securities [Member] Commercial Mortgage Backed Securities [Member] Residential collateralized mortgage obligations [Member] Collateralized Residential Mortgage Obligations [Member] The category includes multiclass, pay-through securitizations collateralized by residential mortgages secured by assets, such as automobiles and boats, which are generally structured so that the collections of principal and interest due from the underlying debtors are paid to the holders of the CMO. Commercial collateralized mortgage obligations [Member] Collateralized Commercial Mortgage Obligations [Member] The category includes multiclass, pay-through securitizations collateralized by commercial mortgages secured by assets, such as automobiles and boats, which are generally structured so that the collections of principal and interest due from the underlying debtors are paid to the holders of the CMO. Municipal bonds [Member] Municipal Bonds [Member] Corporate debt securities [Member] Corporate Debt Securities [Member] US Treasury securities [Member] US Treasury Securities [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] AVAILABLE FOR SALE Debt Securities, Available-for-sale [Abstract] Amortized cost Debt Securities, Available-for-sale, Amortized Cost Gross unrealized gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross unrealized losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Fair value Debt Securities, Available-for-sale HELD TO MATURITY Debt Securities, Held-to-maturity [Abstract] Amortized cost Debt Securities, Held-to-maturity Gross unrealized gains Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain Gross unrealized losses Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss Fair value Debt Securities, Held-to-maturity, Fair Value Accounting Policies [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption [Domain] Cumulative Effect, Period Of Adoption [Domain] [Domain] for Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption, Adjustment [Member] Cumulative Effect, Period Of Adoption, Adjustment [Member] Cumulative Effect, Period Of Adoption, Adjustment [Member] Cumulative Effect, Period Of Adoption, Adjusted Balance [Member] Cumulative Effect, Period Of Adoption, Adjusted Balance [Member] Cumulative Effect, Period Of Adoption, Adjusted Balance [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Allowance for credit losses on loans held for investment Financing Receivable, Allowance for Credit Loss Off-Balance Sheet, Credit Loss, Liability Off-Balance Sheet, Credit Loss, Liability Allowance for credit losses Financing Receivable, Allowance For Credit Loss And Off-Balance Sheet, Credit Loss, Liability Financing Receivable, Allowance For Credit Loss And Off-Balance Sheet, Credit Loss, Liability Subsequent Events [Abstract] SUBSEQUENT EVENT Subsequent Events [Text Block] Commitments and Contingencies Disclosure [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Other Commitments [Axis] Other Commitments [Axis] Other Commitments [Domain] Other Commitments [Domain] Investment Commitment [Member] Investment Commitment [Member] Investment Commitment [Member] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Unused Consumer Portfolio Loan Fund [Member] Unused Consumer Portfolio Loan Fund [Member] Unused Consumer Portfolio Loan Fund [Member] Unused Commercial Portfolio Loan Fund [Member] Unused Commercial Portfolio Loan Fund [Member] Unused Commercial Portfolio Loan Fund [Member] Undisbursed construction loan funds [Member] Undisbursed construction loan funds [Member] Undisbursed construction loan funds Loss sharing relationship [Member] Loss Sharing Relationship [Member] A loss sharing relationship that is accounted for as a guarantee under U.S. GAAP. Credit risk [Member] Credit Risk [Member] Financial Instrument [Axis] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Representations and warranties reserve for loan receivables [Member] Representations and Warranties Reserve for Loan Receivables [Member] A reserve for expected or probable losses from the repurchase of loan receivables related to certain representations and warranties made at the time the loan was sold. Loss Contingencies [Line Items] Loss Contingencies [Line Items] Unfunded loan commitments Credit of Unfunded Commitments Credit of unfunded commitments. Unfunded commitment balance of loans sold on a servicing-retained basis Guarantor Obligations, Maximum Exposure, Undiscounted Allowance for unfunded commitments Allowance For Unfunded Commitments Allowance For Unfunded Commitments Other commitment Other Commitment UPB of loans sold through DUS Loans sold through DUS Unpaid principal of Loans sold through DUS program. Reserve liability related to multifamily DUS program Reserve liability related to multifamily DUS Program Reserve liability related to multifamily DUS Program Losses incurred - related to DUS Loss Contingency, Loss in Period Reserve liability related to mortgage repurchase Loss Contingency Accrual Number of material claims pending Loss Contingency, Pending Claims, Number Earnings Per Share [Abstract] Schedule of earnings per share, basic and diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Banking and Thrift [Abstract] Certificates of deposit outstanding Time Deposits, Rolling Year Maturity [Abstract] Within one year Time Deposit Maturities, Next Rolling Twelve Months One to two years Time Deposit Maturities, Rolling Year Two Two to three years Time Deposit Maturities, Rolling Year Three Three to four years Time Deposit Maturities, Rolling Year Four Four to five years Time Deposit Maturities, Rolling Year Five Thereafter Time Deposit Maturities, after Rolling Year Five Total Time Deposits Projected Amortization Expense [Abstract] Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Remainder of 2020 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2024 Finite-Lived Intangible Assets, Amortization Expense, Year Five 2025 Finite-Lived Intangible Assets, Amortization Expense, Year Six Finite-Lived Intangible Assets, Amortization Expense, Year Six 2026 and thereafter Finite-Lived Intangible Assets, Amortization Expense, After Year Six Finite-Lived Intangible Assets, Amortization Expense, After Year Six Carrying value of multifamily MSR Servicing Asset at Amortized Cost Derivative [Table] Derivative [Table] Concentration of Credit or Market Risk [Axis] Concentration of Credit or Market Risk [Axis] Fair Value, Concentration of Risk, Disclosure Items [Domain] Fair Value, Concentration of Risk, Disclosure Items [Domain] Concentration of credit risk, master netting arrangements [Member] Fair Value, Concentration of Credit Risk, Master Netting Arrangements [Member] Derivative [Line Items] Derivative [Line Items] Gross fair value, derivative assets Derivative Asset, Fair Value, Gross Asset Netting adjustments, derivative assets Derivative Asset Fair Value Amount Offset Against Other Derivatives The amount as of the balance sheet date of the fair value of derivative assets that in accordance with the entity's accounting policy was offset against other derivative contracts under a master netting arrangement. Derivative assets Derivative Asset Securities pledged, derivative assets Derivative Asset, Fair Value of Collateral Net amount - derivative assets Derivative Asset, Fair Value, Amount Offset Against Collateral Derivatives before netting, derivative Liabilities Derivative Liability, Fair Value, Gross Liability Netting adjustments, derivative liabilities Derivative Liability Fair Value Amount Offset Against Other Derivatives The amount as of the balance sheet date of the fair value of derivative liabilities that in accordance with the entity's accounting policy were offset against other derivative contracts under a master netting arrangement. Derivative liabilities Derivative Liability Securities pledged, derivative liabilities Derivative Liability, Fair Value of Collateral Net amount, derivative liabilities Derivative Liability, Fair Value, Amount Offset Against Collateral Cash collateral, as part of netting adjustment Right to reclaim cash in excess of fair value of derivative liability The right to reclaim cash that is in excess of fair value of derivative liability. Class of Financing Receivable [Domain] Past due Financing Receivable, Past Due Current Financing Receivable, Not Past Due 90-days or more past due and still accruing Financing Receivable, 90 Days or More Past Due, Still Accruing Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Measurement Input, Implied Spread [Member] Measurement Input, Implied Spread [Member] Measurement Input, Implied Spread [Member] Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Line Items] Loans held for investment, fair value option Loans held for investment, fair vale inputs Loans Held-for-Investment, Measurement Input Loans Held-for-Investment, Measurement Input Restructuring and Related Activities [Abstract] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Restructuring Type [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Facility related costs [Member] Facility Closing [Member] Personnel related costs [Member] Employee Severance [Member] Other Restructuring [Member] Other Restructuring [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Beginning balance Restructuring Reserve Transfers-In Restructuring Reserve, Transfers-In Restructuring Reserve, Transfers-In Restructuring charges Restructuring Charges Costs paid or otherwise settled Payments for Restructuring Ending balance Discontinued Operations and Disposal Groups [Abstract] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Discontinued Operations, Disposed of by Sale [Member] Discontinued Operations, Disposed of by Sale [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Proceeds from asset sales Proceeds from Divestiture of Businesses and Interests in Affiliates Book value of asset sales Disposal Group, Including Discontinued Operation, Assets Sold During Period Disposal Group, Including Discontinued Operation, Assets Sold During Period Gain on assets sold Disposal Group, Including Discontinued Operation, Gain On Assets Sold Disposal Group, Including Discontinued Operation, Gain On Assets Sold Transaction costs Disposal Group, Including Discontinued Operation, Transaction Costs Disposal Group, Including Discontinued Operation, Transaction Costs Compensation expense related to the transactions Disposal Group, Including Discontinued Operation, Labor And Related Expense Disposal Group, Including Discontinued Operation, Labor And Related Expense Facility and IT related costs Disposal Group, Including Discontinued Operation, Occupancy, Net Disposal Group, Including Discontinued Operation, Occupancy, Net Total costs Disposal Group, Including Discontinued Operation, Consideration Including Reimbursed Costs Disposal Group, Including Discontinued Operation, Consideration Including Reimbursed Costs Net loss on disposal Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax Security pledged under repurchase agreement Pledged Financial Instruments, Not Separately Reported, Securities for Repurchase Agreements Tax exempt interest income on available-for-sale securities Interest Income, Securities, Operating, Tax Exempt Stockholders' Equity Note [Abstract] Schedule of accumulated other comprehensive income (loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Reclassification out of accumulated other comprehensive income (loss) Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Leases [Abstract] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Operating lease liabilities Operating Lease, Liability Finance lease right-of-use assets Finance Lease, Right-of-Use Asset Finance lease liabilities Finance Lease, Liability Weighted Average Remaining lease term Weighted Average Remaining Lease Term [Abstract] Weighted Average Remaining Lease Term [Abstract] Operating leases Operating Lease, Weighted Average Remaining Lease Term Finance leases Finance Lease, Weighted Average Remaining Lease Term Weighted Average Discount Rate Weighted Average Lease Discount Rate [Abstract] Weighted Average Lease Discount Rate [Abstract] Operating leases Operating Lease, Weighted Average Discount Rate, Percent Finance leases Finance Lease, Weighted Average Discount Rate, Percent Interest expense on deposits Interest Expense, Deposits [Abstract] NOW accounts Interest Expense, Negotiable Order of Withdrawal (NOW) Deposits Statement savings accounts Interest Expense, Savings Deposits Money market accounts Interest Expense, Money Market Deposits Certificates of deposit Interest Expense, Time Deposits Interest expense on deposits, total Interest Expense, Deposits AVAILABLE FOR SALE Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] Less than 12 months, Gross unrealized losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Less than 12 months, Fair value Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months Twelve months or more, Gross unrealized losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Twelve months or more, Fair value Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Total, Gross unrealized losses Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Total, Fair value Debt Securities, Available-for-sale, Unrealized Loss Position HELD TO MATURITY Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract] Held-to-maturity securities, unrealized loss position Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss Deposit balances, including stated rates Deposits, by Type [Abstract] Noninterest-bearing accounts Noninterest-bearing Deposit Liabilities NOW accounts, 0.00% to 0.70% at March 31, 2020 and 0.00% to 1.19% at December 31, 2019 Deposits, Negotiable Order of Withdrawal (NOW) Statement savings accounts, due on demand, 0.05% to 1.13% at March 31, 2020 and December 31, 2019 Deposits, Savings Deposits Money market accounts, due on demand, 0.00% to 2.18% at March 31, 2020 and 0.00% to 2.42% at December 31, 2019 Deposits, Money Market Deposits Certificates of deposit, 0.10% to 3.06% at March 31, 2020 and December 31, 2019 Deposits, Total Deposits Schedule of Short-term Debt [Table] Schedule of Short-term Debt [Table] Short-term Debt [Line Items] Short-term Debt [Line Items] Weighted Average Rate, NOW accounts (as a percent) Weighted Average Rate Domestic Deposit, Notice of Withdrawal Weighted Average Rate, Statement savings accounts (as a percent) Weighted Average Rate Domestic Deposit, Savings Weighted Average Rate, Money market accounts (as a percent) Weighted Average Rate Domestic Deposit, Money Market Weighted Average Rate, Certificates of deposit (as a percent) Weighted Average Rate Domestic Deposit, Certificates of Deposit Credit Loss Status [Axis] Credit Loss Status [Axis] Credit Loss Status [Domain] Credit Loss Status [Domain] Financial Asset, Other than Financial Asset Acquired with Credit Deterioration [Member] Financial Asset, Other than Financial Asset Acquired with Credit Deterioration [Member] Pass [Member] Pass [Member] Watch [Member] Watch [Member] A category of financing receivables that has a remote risk of default but is exhibiting deficiency or weakness that requires monitoring. Special mention [Member] Special Mention [Member] Substandard [Member] Substandard [Member] Doubtful [Member] Doubtful [Member] Loss [Member] Unlikely to be Collected Financing Receivable [Member] Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract] Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract] Designated loan grades by loan portfolio segment and loan class. Loans before allowance, net of deferred loan fees and costs Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract Type [Domain] Derivative Contract [Domain] Forward sale commitments [Member] Forward Contracts [Member] Interest rate swaps [Member] Interest Rate Swap [Member] Eurodollar futures [Member] Eurodollar Future [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Notional amount Derivative, Notional Amount Derivatives before netting, derivative assets Cash paid for amounts included in the measurement of lease liabilities: Cash Paid For Amounts Included In The Measurement Of Lease Liabilities [Abstract] Cash Paid For Amounts Included In The Measurement Of Lease Liabilities [Abstract] Operating cash flows from operating leases Operating Lease, Payments Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Financing cash flows from finance leases Finance Lease, Principal Payments Right-of-use assets obtained in exchange for lease obligations: Right-Of-Use Assets Obtained In Exchange For Lease Obligations [Abstract] Right-Of-Use Assets Obtained In Exchange For Lease Obligations [Abstract] Operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Finance leases Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Servicing Asset at Amortized Value, Balance [Roll Forward] Servicing Asset at Amortized Cost, Balance [Roll Forward] Beginning balance Origination Servicing Asset at Amortized Cost, Additions Amortization Servicing Asset at Amortized Cost, Amortization Ending balance Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Federal Home Loan Bank Advances [Member] Federal Home Loan Bank Advances [Member] Federal Reserve Bank Advances [Member] Federal Reserve Bank Advances [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Washington WASHINGTON California CALIFORNIA Residential Mortgage And Multifamily [Member] Residential Mortgage And Multifamily [Member] Residential Mortgage And Multifamily [Member] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Number of portfolio segments Number of Operating Segments Loans pledged as collateral Loans Pledged as Collateral Percentage of loan portfolio Percentage of Loan Portfolio Percentage of total loan portfolio. Number of loans granted forbearance Number Of Loans Granted Forbearance Number Of Loans Granted Forbearance Loans granted forbearance, outstanding balance Loans Granted Forbearance, Outstanding Balance Loans Granted Forbearance, Outstanding Balance Number of loans in process for forbearance approval Number Of Loans In Process For Forbearance Approval Number Of Loans In Process For Forbearance Approval Loans in process of forbearance approval, outstanding balance Loans In Process Of Forbearance Approval, Outstanding Balance Loans In Process Of Forbearance Approval, Outstanding Balance Number of days past due for consumer loans TDR to be re-default Trouble Debt Restructuring, Re-Default, Number Of Days Past Due, Consumer Trouble Debt Restructuring, Re-Default, Number of Days Past Due, Consumer Number of days past due for commercial loans TDR to be re-default Trouble Debt Restructuring, Re-Default, Number Of Days Past Due, Commercial Trouble Debt Restructuring, Re-Default, Number Of Days Past Due, Commercial Performing TDRs Financing Receivable, Modifications, Performing, Recorded Investment The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings and are currently performing in accordance with the contractual terms of the modification. Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] 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] Investment securities available for sale Fair value inputs Debt Securities, Available-for-sale, Measurement Input Remaining lease terms Operating And Finance Lease, Remaining Lease Terms Operating And Finance Lease, Remaining Lease Terms Lessee, Operating Sublease, Description [Abstract] Lessee, Operating Sublease, Description [Abstract] Remainder of 2020, sublease payments due to Company Lessee, Operating Sublease, Asset, Payments, Remainder Of Fiscal Year Lessee, Operating Sublease, Asset, Payments, Remainder Of Fiscal Year 2021, sublease payments due to Company Lessee, Operating Sublease, Asset, Payments, Due Year Two Lessee, Operating Sublease, Asset, Payments, Due Year Two 2022, sublease payments due to Company Lessee, Operating Sublease, Asset, Payments, Due Year Three Lessee, Operating Sublease, Asset, Payments, Due Year Three 2023, sublease payments due to Company Lessee, Operating Sublease, Asset, Payments, Due Year Four Lessee, Operating Sublease, Asset, Payments, Due Year Four 2024, sublease payments due to Company Lessee, Operating Sublease, Asset, Payments, Due Year Five Lessee, Operating Sublease, Asset, Payments, Due Year Five Thereafter, sublease payments due to Company Lessee, Operating Sublease, Asset, Payments, Due After Year Five Lessee, Operating Sublease, Asset, Payments, Due After Year Five Impairment loss Operating Lease, Impairment Loss Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Beginning balance (Reversal of) Provision Financing Receivable, Credit Loss, Expense (Reversal) Recoveries, net of (charge-offs) Ending Balance Retained earnings decrease due to Topic 326 adoption Retained Earnings (Accumulated Deficit) New Accounting Pronouncement, Early Adoption, Effect [Member] New Accounting Pronouncement, Early Adoption, Effect [Member] Allowance for credit losses by loan portfolio Financing Receivable, Allowance for Credit Loss [Roll Forward] Charge-offs Recoveries Deposit balances, including stated rates Deposit Balances Including Stated Rates [Table Text Block] Deposit balances, including stated rates. Interest expense on deposits Interest Expense on Deposits [Table Text Block] Interest expense on deposits. Certificates of deposit outstanding Schedule of Maturities of Certificate of Deposits [Table Text Block] Schedule of maturities of certificate of deposits. Schedule of Lease Cost Lease, Cost [Table Text Block] Schedule of Lease Supplemental Cash Flow Information Lease Supplemental Cash Flow Information [Table Text Block] Lease Supplemental Cash Flow Information [Table Text Block] Schedule of Lease Assets and Liabilities Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Schedule of Finance Lease Liability Maturities Finance Lease, Liability, Maturity [Table Text Block] Schedule of Operating Lease Liability Maturities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Restructuring reserve rollforward Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Financing Receivable, Impaired [Line Items] Impaired loans by loan portfolio segment and loan class [Abstract] Impaired Loans by Loan Portfolio Segment and Loan Class [Abstract] Impaired loans by loan portfolio segment and loan class. Recorded investment with no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Recorded Investment Recorded investment with related allowance recorded Impaired Financing Receivable, with Related Allowance, Recorded Investment Total recorded investment Impaired Financing Receivable, Recorded Investment Unpaid principal balance with no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Unpaid principal balance with related allowance recorded Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Total unpaid principal balance Impaired Financing Receivable, Unpaid Principal Balance Related allowance Impaired Financing Receivable, Related Allowance Statement of Stockholders' Equity [Abstract] Dividends (in dollars per share) Common Stock, Dividends, Per Share, Declared Proceeds from sale of loans originated as held for sale Proceeds from Sale of Mortgage Loans Held-for-sale Loans held for investment Accounts and Financing Receivable, after Allowance for Credit Loss, Current and Noncurrent [Abstract] Allowance for credit losses Loans held for investment Financing Receivable, after Allowance for Credit Loss Accrued interest receivable Financing Receivable, Interest Receivable Financing Receivable, Interest Receivable Cover [Abstract] Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Smaller Reporting Company Entity Small Business Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag DERIVATIVES AND HEDGING ACTIVITIES Derivative Instruments and Hedging Activities Disclosure [Text Block] Business Combinations [Abstract] BUSINESS COMBINATIONS Business Combination Disclosure [Text Block] Weighted-average interest rate on certificates of deposit (as a percent) Time Deposits Weighted Average Interest Rate Time deposits weighted average interest rate. Time deposits, at or above FDIC insurance limit Time Deposits, at or Above FDIC Insurance Limit Brokered deposits Interest-bearing Domestic Deposit, Brokered DISCONTINUED OPERATIONS Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) [Member] AOCI Attributable to Parent [Member] Statement [Line Items] Statement [Line Items] Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity Attributable to Parent [Abstract] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock shares outstanding, beginning balance (in shares) Common Stock, Shares, Outstanding Beginning balance Stockholders' Equity Attributable to Parent Cumulative effect of adoption of new accounting standards Cumulative Effect of New Accounting Principle in Period of Adoption Net income Net Income (Loss) Attributable to Parent Dividends declared on common stock ($0.15 per share) Dividends, Common Stock Common stock issued, (in shares) Stock Issued During Period, Shares, New Issues Common stock issued Stock Issued During Period, Value, New Issues Share-based compensation recovery APIC, Share-based Payment Arrangement, Option, Increase for Cost Recognition Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Common stock repurchased and retired (in shares) Stock Repurchased and Retired During Period, Shares Common stock repurchased and retired Stock Repurchased and Retired During Period, Value Common stock shares outstanding, ending balance (in shares) Ending balance Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] HLC Based Mortgage Banking Operations [Member] HLC Based Mortgage Banking Operations [Member] HLC Based Mortgage Banking Operations [Member] Agency debentures [Member] Agency Securities [Member] Single family [Member] Single Family Residential [Member] Single family residential. Mortgage servicing rights, unpaid principle balance, sold, number of sales Mortgage Servicing Rights, Unpaid Principle Balance, Sold, Number Of Sales Mortgage Servicing Rights, Unpaid Principle Balance, Sold, Number Of Sales Mortgage servicing rights, unpaid principal balance, sold Mortgage Servicing Rights, Unpaid Principal Balance, Sold Mortgage Servicing Rights, Unpaid Principal Balance, Sold Percentage of loan portfolio sold Percentage Of Loans Serviced For Others, As A Percentage Of Total Loans Serviced For Others Percentage Of Loans Serviced For Others, As A Percentage Of Total Loans Serviced For Others Increase in income during period from discontinued operations before income taxes Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Home loan centers sold Home Loan Centers Sold Home Loan Centers Sold Average recorded investment Impaired Financing Receivable, Average Recorded Investment Interest Income Recognized Impaired Financing Receivable, Interest Income, Accrual Method Mortgage Repurchase Losses [Roll Forward] Loss Contingency Accrual [Roll Forward] Balance, beginning of period Additions, net of adjustments Loss Contingency Accrual, Provision Realized losses Loss Contingency Accrual, Payments Balance, end of period Fair value measurement methodologies Fair Value Measurement Methodologies [Table Text Block] Fair value measurement methodologies. Schedule of fair value hierarchy measurement Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of inputs used to measure fair value Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Schedule of fair value changes and activity for Level 3 Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of assets that had changes in their recorded fair value Fair Value Measurements, Nonrecurring [Table Text Block] Schedule of the fair value hierarchy Fair Value, by Balance Sheet Grouping [Table Text Block] LOANS AND CREDIT QUALITY Financing Receivables [Text Block] Nonrecurring [Member] Fair Value, Nonrecurring [Member] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Level 3 [Member] Loans held for investment Investments, Fair Value Disclosure Total Gains (Losses) Gains Losses on Loans Held for Investment Gains losses on loans held for investment. ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Comprehensive Income (Loss) Note [Text Block] INVESTMENT SECURITIES Marketable Securities [Table Text Block] Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) [Table] Loans [Member] Loans [Member] Servicing contracts [Member] Servicing Contracts [Member] Other Credit Derivatives [Member] Other Credit Derivatives [Member] Mortgages [Member] Mortgages [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Net gain from derivatives economically hedging MSR Derivative, Gain (Loss) on Derivative, Net Statement of Comprehensive Income [Abstract] Net income (loss) Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized gain (loss) on investment securities available for sale: Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax [Abstract] Unrealized holding gain arising during the year, net of tax expense of $3,587 and $2,502 Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Reclassification adjustment for net (gains) losses included in net income, net of tax expense (benefit) of $24 and $(52) Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Other comprehensive income Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Servicing Asset at Fair Value, Amount [Roll Forward] Servicing Asset at Fair Value, Amount [Roll Forward] Beginning balance Servicing Asset at Fair Value, Amount Additions and amortization: Additions And Amortization [Abstract] Additions And Amortization [Abstract] Originations Servicing Asset at Fair Value, Additions Sale of single family MSRs Servicing Asset at Fair Value, Disposals Changes due to modeled amortization Changes in Fair Value of Mortgage Servicing Rights Due to Modeled Amortization Changes in the fair value of mortgage servicing rights due to modeled amortization. Net additions and amortization Servicing Asset at Fair Value, Additions and Amortization, Net Servicing Asset at Fair Value, Additions and Amortization, Net Changes in fair value of MSR due to changes in market inputs and/or model updates Servicing Asset at Fair Value, Other Changes in Fair Value Ending balance Financing Receivable, Modification, Type of Concession [Axis] Financing Receivable, Modification, Type of Concession [Axis] Describes the type of concession given by the entity to debtor. Financing Receivable, Concessions [Domain] Financing Receivable, Concessions [Domain] Concessions given to a borrower under a loan modification. Interest rate reduction [Member] Interest Rate Reduction [Member] Interest rate reduction. Payment restructure [Member] Payment Restructure [Member] Payment restructure. Number of loan modifications - TDR Financing Receivable, Modifications, Number of Contracts Recorded investment - TDR Financing Receivable, Troubled Debt Restructuring Related charge-offs - TDR Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down MORTGAGE BANKING OPERATIONS Mortgage Banking Operations [Text Block] Mortgage banking operation. Discontinued Operations, Held-for-sale [Member] Discontinued Operations, Held-for-sale [Member] Disposal Group, Including Discontinued Operation, Assets [Abstract] Disposal Group, Including Discontinued Operation, Assets [Abstract] Loans held for sale, at fair value Disposal Group, Including Discontinued Operation, Loans Held-For-Sale, Fair Value Disclosure Disposal Group, Including Discontinued Operation, Loans Held-For-Sale, Fair Value Disclosure Other assets Disposal Group, Including Discontinued Operation, Other Assets Assets of discontinued operations Disposal Group, Including Discontinued Operation, Assets Disposal Group, Including Discontinued Operation, Liabilities [Abstract] Disposal Group, Including Discontinued Operation, Liabilities [Abstract] Accrued expenses and other liabilities Disposal Group, Including Discontinued Operation, Accrued Liabilities Liabilities of discontinued operations Disposal Group, Including Discontinued Operation, Liabilities Derivative assets included in other assets Disposal Group, Including Discontinued Operation, Derivative Asset Disposal Group, Including Discontinued Operation, Derivative Asset Loans held for sale Loans Receivable Held-for-sale, Amount Loans held for sale, discontinued operations Disposal Group, Including Discontinued Operation, Loans Held For Sale Disposal Group, Including Discontinued Operation, Loans Held For Sale Income Statement [Abstract] Interest income: Interest and Dividend Income, Operating [Abstract] Loans Interest and Fee Income, Loans and Leases Investment securities Interest and Dividend Income, Securities, Operating Other Other Interest and Dividend Income Total interest income Interest and Dividend Income, Operating Interest expense: Interest Expense [Abstract] Deposits Federal Home Loan Bank advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Short-term Federal funds purchased and securities sold under agreements to repurchase Interest Expense, Securities Sold under Agreements to Repurchase Long-term debt Interest Expense, Long-term Debt Other Interest Expense, Other Total interest expense Interest Expense Net interest income Interest Income (Expense), Net Provision for credit losses Provision for Loan, Lease, and Other Losses Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Noninterest income: Noninterest Income [Abstract] Net gain on loan origination and sale activities Net Gains Losses on Mortgage Loan Origination and Sales Activities Net gain on mortgage loan origination and sale activities. Loan servicing income Servicing Fees Net1 Servicing Fees Net1 Depositor and other retail banking fees Depositor and Other Retail Banking Fees Depositor and other retail banking fees. Insurance agency commissions Insurance Commissions and Fees Gain (loss) on sale of investment securities available for sale, net Debt Securities, Available-for-sale, Realized Gain (Loss) Other Noninterest Income (Expense), Other Noninterest Income (Expense), Other Total noninterest income Noninterest Income Noninterest expense: Noninterest Expense [Abstract] Salaries and related costs Labor and Related Expense General and administrative General and Administrative Expense Amortization of core deposit intangibles Amortization of Intangible Assets Legal Legal Fees Consulting Professional Fees Federal Deposit Insurance Corporation assessments Federal Deposit Insurance Corporation Premium Expense Occupancy Occupancy, Net Information services Communications and Information Technology Net cost (benefit) from operation and sale of other real estate owned Net cost (income) from operations and sale of other real estate owned Amount of net cost (income) from operations and sale of other real estate owned during the period. Total noninterest expense Noninterest Expense Income from continuing operations before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense from continuing operations Income Tax Expense (Benefit) Income from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Loss from discontinued operations before income taxes (includes net loss on disposal of $12,224 for the three months ended March 31, 2019) Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Income tax benefit from discontinued operations Discontinued Operation, Tax Effect of Discontinued Operation Income (loss) from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest NET INCOME (LOSS) Basic earnings per common share: Earnings Per Share, Basic [Abstract] Basic income from continuing operations per share (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Basic income (loss) from discontinued operations per share (in dollars per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share Basic earnings per share (in dollars per share) Earnings Per Share, Basic Diluted earnings per common share Earnings Per Share, Diluted [Abstract] Diluted income from continuing operations per share (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Diluted income (loss) from discontinued operations per share (in dollars per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share Diluted earnings per share (in dollars per share) Earnings Per Share, Diluted Basic weighted average number of shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted weighted average number of shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Operating lease cost Operating Lease, Cost Finance lease cost: Finance Lease Cost1 [Abstract] Finance Lease Cost1 [Abstract] Amortization of right-of-use assets Finance Lease, Right-of-Use Asset, Amortization Interest on lease liabilities Finance Lease, Interest Expense Short-term lease Short-term Lease, Cost Variable lease cost Variable Lease, Cost Sublease income Sublease Income Total lease cost Lease, Cost Mortgage loans on real estate, by loan Mortgage Loans on Real Estate, by Loan Disclosure [Table Text Block] Tabular disclosure of mortgage loans on Real Estate, held for sale and sold. Net gain on loan origination and sale activity Net Gain on Mortgage Loan Origination and Sale Activity [Table Text Block] Net gain on mortgage loan origination and sale activity. Company's portfolio of loans serviced for others Portfolio of Loans Serviced for Others [Table Text Block] Company's portfolio of loans serviced for others. Mortgage repurchase losses Mortgage Repurchase Losses [Table Text Block] Mortgage Repurchase Losses rollforward Revenue from mortgage servicing, including the effects of derivative risk management instruments Schedule of Revenue from Mortgage Servicing Including Effects of Derivative Risk Management Instruments [Table Text Block] Revenue from mortgage servicing, including the effects of derivative risk management instruments. Key economic assumptions used in measuring initial FV of capitalized single family MSRs Key Economic Assumptions Used in Measuring Initial Value of Capitalized Single Family Created from Loan Sales with Retained Servicing [Table Text Block] Key economic assumptions used in measuring the initial value of capitalized single family MSRs created from loan sales with retained servicing. Schedule of sensitivity analysis of fair value, transferor's interests in transferred financial assets Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets [Table Text Block] Changes in single family MSRs measured at fair value Schedule of Servicing Assets at Fair Value [Table Text Block] Changes in multifamily MSRs measured at the lower of amortized cost or fair value Servicing Asset at Amortized Cost [Table Text Block] Projected amortization expense for the gross carrying value of multifamily MSRs Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Net cash used in operating activities Cash Provided by (Used in) Operating Activities, Discontinued Operations Net cash provided by investing activities Cash Provided by (Used in) Investing Activities, Discontinued Operations EPS numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Income from continuing operations Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income (loss) from discontinued operations Net Income (Loss) from Discontinued Operations Available to Common Shareholders, Basic Net income available to common shareholders Net Income (Loss) Available to Common Stockholders, Basic EPS Denominator [Abstract] EPS Denominator [Abstract] EPS Denominator [Abstract] Weighted average shares: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Dilutive effect of outstanding common stock equivalents (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Diluted weighted-average number of shares outstanding (in shares) Aggregate number of common stock equivalents and unvested restricted stock (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Amortized cost and fair value of available for sale securities Debt Securities, Available-for-sale [Table Text Block] Amortized cost and fair value of held-to-maturity securities Debt Securities, Held-to-maturity [Table Text Block] Investment securities in an unrealized loss position Schedule of Unrealized Loss on Investments [Table Text Block] Computation of weighted average yield using coupon on the fair value Computation of Weighted Average Yield Using Coupon on Fair Value [Table Text Block] Sales of investment securities available for sale Schedule of Realized Gain (Loss) [Table Text Block] Carrying value of securities pledged as collateral Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block] Derivative Instrument [Axis] Derivative Contract [Domain] Interest rate swaps, back-to-back [Member] Interest Rate Swap, Back-To-Back [Member] Interest Rate Swap, Back-To-Back [Member] Derivatives designated as a hedging instrument Derivative, Fair Value, Net Liability for cash collateral received from counterparties Derivative Asset, Collateral, Obligation to Return Cash, Offset Receivable for cash collateral paid to counterparties Derivative Liability, Collateral, Right to Reclaim Cash, Offset Notional amount of open interest rate swap agreements Mark-to-market losses recorded Loss on Derivative Instruments, Pretax Early buyout loans [Member] Early Buyout Loans [Member] Loans for which the entity has the unilateral right to repurchase out of a mortgage pool. Such loans accounted for as a repurchase. Multifamily DUS [Member] Servicing advances Servicing Advances Advances made as part of the entity's obligations as a servicer. Loans receivable, in Ginnie Mae pool Expected weighted average life of MSR Expected Weighted Average Life of MSR Expected Weighted Average Life of MSR 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] Reported Value Measurement [Member] Reported Value Measurement [Member] Estimate of Fair Value Measurement [Member] Estimate of Fair Value Measurement [Member] Allowance: collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Allowance: individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Loans: collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment Loans: individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Total Financing Receivable, before Allowance for Credit Loss and Fee Fair Value Hierarchy and NAV [Domain] Level 1 [Member] Collateralized mortgage obligations residential [Member] Collateralized Mortgage Obligations Residential [Member] Collateralized mortgage obligations residential. Collateralized mortgage obligations commercial [Member] Collateralized Mortgage Obligations Commercial [Member] Collateralized mortgage obligations commercial. US treasury securities [Member] Us Treasury Collateralized Mortgage Obligations [Member] US treasury collateralized mortgage obligations. Assets: Assets, Fair Value Disclosure [Abstract] Fair value of loans held for sale Loans Held-for-sale, Fair Value Disclosure Single family mortgage servicing rights Derivative assets Total assets Assets, Fair Value Disclosure Liabilities: Liabilities, Fair Value Disclosure [Abstract] Derivative liabilities Total liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Gain On Mortgage Loan Origination And Sale Activities [Table] Gain On Mortgage Loan Origination And Sale Activities [Table] Schedule detailing gain on mortgage loan origination and sale activities. Gain on mortgage loan origination and sale activities [Line Items] Gain on mortgage loan origination and sale activities [Line Items] Gain on mortgage loan origination and sale activities [Line Items] Gain on loan origination and sale activities Net Gains Losses On Mortgage Loan Origination And Sales Activities, Including Discontinued Operations Net Gains Losses On Mortgage Loan Origination And Sales Activities, Including Discontinued Operations Net gains on mortgage loan origination and sales activities, discontinued operations Disposal Group, Including Discontinued Operation, Net Gains Losses On Mortgage Loan Origination And Sales Activities Disposal Group, Including Discontinued Operation, Net Gains Losses On Mortgage Loan Origination And Sales Activities Constant prepayment rate [Member] Measurement Input, Prepayment Rate [Member] Discount rate [Member] Measurement Input, Discount Rate [Member] Servicing asset, measurement input Servicing Asset, Weighted Average Measurement Input Servicing Asset, Weighted Average Measurement Input Tax expense (benefit) on unrealized holding gain (loss) on securities Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax Tax expense (benefit) on reclassification adjustment for net gain on securities included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Collateral [Axis] Collateral [Axis] Collateral [Domain] Collateral [Domain] Land Land [Member] 1-4 Family One To Four Family [Member] One To Four Family [Member] Multifamily Multifamily [Member] Non-residential real estate Non-Residential Real Estate [Member] Non-Residential Real Estate [Member] Other non-real estate Other Non-Real Estate [Member] Other Non-Real Estate [Member] Total Collateral Pledged [Member] Washington and California State to secure public deposits Pledged Assets Not Separately Reported Securities Pledged For State and Local Governments Pledged Assets Not Separately Reported Securities Pledged For State and Local Governments. Other securities pledged Pledged Assets Separately Reported Other Securities Pledged Pledged Assets Separately Reported Other Securities Pledged Total securities pledged as collateral Pledged Financial Instruments, Not Separately Reported, Securities Lessee, Operating Lease, Liability, Payment, Due [Abstract] Lessee, Operating Lease, Liability, Payment, Due [Abstract] 2020 (excluding the three months ended March 31, 2020) Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 2021 Lessee, Operating Lease, Liability, Payments, Due Year Two 2022 Lessee, Operating Lease, Liability, Payments, Due Year Three 2023 Lessee, Operating Lease, Liability, Payments, Due Year Four 2024 Lessee, Operating Lease, Liability, Payments, Due Year Five 2025 Lessee, Operating Lease, Liability, Payments, Due Year Six Lessee, Operating Lease, Liability, Payments, Due Year Six 2026 and thereafter Lessee, Operating Lease, Liability, Payments, Due After Year Six Lessee, Operating Lease, Liability, Payments, Due After Year Six Total lease payments Lessee, Operating Lease, Liability, Payments, Due Less imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Total Finance Lease, Liability, Payment, Due [Abstract] 2020 (excluding the three months ended March 31, 2020) Finance Lease, Liability, Payments, Remainder of Fiscal Year 2021 Finance Lease, Liability, Payments, Due Year Two 2022 Finance Lease, Liability, Payments, Due Year Three 2023 Finance Lease, Liability, Payments, Due Year Four 2024 Finance Lease, Liability, Payments, Due Year Five 2025 Finance Lease, Liability, Payments, Due Year Six Finance Lease, Liability, Payments, Due Year Six 2026 and thereafter Finance Lease, Liability, Payments, Due After Year Six Finance Lease, Liability, Payments, Due After Year Six Total lease payments Finance Lease, Liability, Payment, Due Less imputed interest Finance Lease, Liability, Undiscounted Excess Amount Total Restatement [Axis] Restatement [Axis] Restatement [Domain] Restatement [Domain] Restatement Adjustment [Member] Restatement Adjustment [Member] Previously Reported [Member] Previously Reported [Member] Servicing fees and other Servicing Fees and Other Servicing fees and other. Changes in fair value of single family MSRs due to modeled amortization Amortization of multifamily and SBA MSRs Amortization of Mortgage Servicing Rights (MSRs) Net servicing income Net Servicing Income Servicing and other related fees, net of payments. Mortgage servicing rights, risk management Mortgage servicing rights, risk management Changes in MSR fair value due to changes in model inputs and assumptions, net of risk management derivatives. Loan servicing income Servicing Fees Net, Including Discontinued Operations Servicing Fees Net, Including Discontinued Operations MSR transaction costs, discontinued operations Disposal Group, Including Discontinued Operation, Servicing Fees Net1 Disposal Group, Including Discontinued Operation, Servicing Fees Net1 Servicing fees reclassification Service Fees And Other And Change In Fair Value Reclassification Service Fees And Other And Change In Fair Value Reclassification Loans held for investment Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Activity in allowance for credit losses Financing Receivable, Allowance for Credit Loss [Table Text Block] Designated loan grades by loan portfolio segment and loan class Financing Receivable Credit Quality Indicators [Table Text Block] Schedule of collateral dependent loans Schedule of Collateral Dependent Loans [Table Text Block] Schedule of Collateral Dependent Loans [Table Text Block] Performing and non-performing loan balances by portfolio segment and loan class Performing and Nonaccrual Loan Balances by Loan Portfolio Segment and Loan Class [Table Text Block] Performing and nonaccrual loan balances by loan portfolio segment and loan class. Schedule of loans on nonaccrual with no related allowance for credit loss Financing Receivable, Nonaccrual [Table Text Block] Past due loans by portfolio segment and loan class Financing Receivable, Past Due [Table Text Block] TDR activity by loan portfolio segment and loan class Financing Receivable, Troubled Debt Restructuring [Table Text Block] TDR balances that subsequently re-defaulted Redefaulted Troubled Debt Restructurings on Financing Receivables [Table Text Block] Redefaulted troubled debt restructurings on financing receivables. Recorded investment in loans by Impairment Methodology Loans by Impairment Methodology [Table Text Block] Gives the balance of loans collectively evaluated for impairment and loans individually evaluated for impairment. Impaired loans by loan portfolio segment and loan class Impaired Financing Receivables [Table Text Block] Average recorded investment in impaired loans Average Recorded Investment of Impaired Loans [Table Text Block] The average recorded investment of impaired loans held for investment, by loan class. Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Available-for-sale Securities [Member] Available-for-sale Securities [Member] Loans held for sale [Member] Loans held for sale [Member] Loans held for sale [Member] Loans held for investment [Member] Loans held for investment [Member] Loans held for investment [Member] Fair Value Changes and Activity for Level 3 [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Beginning balance Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Transfers Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net Payoffs/Sales/Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Change in mark to market/Realized/unrealized gains (losses) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Ending balance Schedule of Topic 326 Adoption Impact Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Transfers between levels of fair value hierarchy Fair Value Measurement Transfers Between With Levels of Hierarchy for Assets and Liabilities Held Fair value measurement transfers between with levels of hierarchy for assets and liabilities held. Proceeds Proceeds from Sale of Debt Securities, Available-for-sale Gross gains Debt Securities, Available-for-sale, Realized Gain Gross losses Debt Securities, Available-for-sale, Realized Loss Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Cumulative effect of adoption of new accounting standards Other comprehensive income before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Amounts reclassified from accumulated other comprehensive (loss) income Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent FAIR VALUE MEASUREMENT Fair Value Disclosures [Text Block] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-13 [Member] Accounting Standards Update 2016-13 [Member] Number of share repurchase programs authorized Number Of Share Repurchase Programs Authorized Number Of Share Repurchase Programs Authorized Stock repurchase program, authorized amount Stock Repurchase Program, Authorized Amount Common stock repurchased (in shares) Stock Repurchased During Period, Shares