Internal model Internal Model [Member] Internal Model Construction and land Land and construction Construction And Land Loan [Member] Class of financing receivables related to construction and land. Schedule of Debt Securities, Available-for-Sale Debt Securities, Available-for-Sale [Table Text Block] Write-offs of allowance for loan losses related to loans transferred to held-for-sale Financing Receivable, Excluding Accrued Interest, Allowance For Credit Loss, Writeoff, Reclassification To Held-For-Sale Financing Receivable, Excluding Accrued Interest, Allowance For Credit Loss, Writeoff, Reclassification To Held-For-Sale Commodity contracts Commodity Contract [Member] Floating Floating [Member] Floating Less: Cash collateral received Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset Award Timing Predetermined Award Timing Predetermined [Flag] Expire After One Year Through Three Years Guarantor Obligations, Maximum Exposure, Undiscounted, Expire in Year Two Through Three Guarantor Obligations, Maximum Exposure, Undiscounted, Expire in Year Two Through Three Type of Guarantees [Axis] Type of Guarantees [Axis] Type of Guarantees [Axis] PAM - Affordable housing partnership, tax credit, and CRA investments Investment Program, Proportional Amortization Method, Applied, Amortization Expense Entity File Number Entity File Number Credit contracts Credit contracts Credit Risk Contract [Member] Minimum compliance period for qualified affordable housing partnerships to fully utilize the tax credits (in years) Minimum Compliance Period to Fully Utilize Tax Credits Represents the minimum compliance period, to meet regulatory requirements for affordable housing, to fully utilize the tax credits. Tabular List, Table Tabular List [Table Text Block] Recent Accounting Pronouncements Yet to be Adopted New Accounting Pronouncements, Policy [Policy Text Block] Schedule of the Carrying and Fair Value Estimates Per the Fair Value Hierarchy of Financial Instruments Measured on a Nonrecurring Basis Fair Value, by Balance Sheet Grouping [Table Text Block] Total Guarantor Obligations, Maximum Exposure, Undiscounted Tax Effect Other Comprehensive Income (Loss), Tax [Abstract] Position [Axis] Position [Axis] Measurement Basis [Axis] Measurement Basis [Axis] Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Amortization of unrealized losses on transferred securities OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), before Tax HTM debt securities: Debt Securities, Held-to-Maturity, Maturity [Abstract] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Gross recoveries Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Amount used to offset against derivative liabilities Less: Cash collateral received Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset Allowance for loan losses Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] After One Year through Five Years Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year One through Five Adjustment to Compensation, Amount Adjustment to Compensation Amount Net change in accrued interest receivable and other assets Increase (Decrease) in Other Operating Assets Loans held-for-investment: Loans Held for Investment, Financing [Abstract] Loans Held for Investment, Financing [Abstract] Stock compensation costs Stock compensation costs Share-Based Payment Arrangement, Noncash Expense Employee Stock Option Share-Based Payment Arrangement, Option [Member] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Cash dividends on common stock Dividends, Common Stock, Cash Total stockholders’ equity Beginning balance Ending balance Equity, Attributable to Parent Net-of-Tax Other Comprehensive Income (Loss), Net of Tax [Abstract] After Five Years through Ten Years Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 5 through 10 Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-Sale [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Insider Trading Policies and Procedures [Line Items] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Total tax credits and benefits Tax Credit and Benefit Tax Credit and Benefit Other assets: Financial assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Issuance of common stock pursuant to various stock compensation plans and agreements (in shares) Stock Issued During Period, Shares, New Issues Fair Value, Measurements, Recurring Fair Value, Recurring [Member] Credit Quality Indicators Concentration Risk, Credit Risk, Policy [Policy Text Block] Affordable housing partnership, tax credit and Community Reinvestment Act (“CRA”) investments, net Total affordable housing partnership, tax credit and CRA investments, net Affordable housing partnership, tax credit and CRA investments, net Affordable Housing Partnership, Tax Credit and CRA Investments, Net Represents the net amount of investments in the projects that qualify for Community Reinvestment Act (CRA) credits or other types of tax credits. Cover [Abstract] Cover [Abstract] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Amortized Cost Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss Maximum Maximum [Member] Available-for-sale debt securities fair value, Total Debt Securities, Available-for-Sale, Unrealized Loss Position After Ten Years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule of Activity for Time-Based and Performance-Based Restricted Stock Units Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Other Assets Other Assets [Member] After Ten Years Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, after Year 10 Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Schedule of Credit-Related Commitments Schedule of Credit-Related Commitments [Table Text Block] Tabular disclosure of outstanding commitments to extend credit that are not reflected in the consolidated financial statements. Interest-bearing cash and deposits with banks Interest Income, Deposits with Financial Institutions Weighted average of loans (in years) Financing Receivable, Modified, Weighted Average Term Increase from Modification INCOME BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Revolving Loans Converted to Term Loans Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Blended statutory tax rate Blended Statutory Tax Rate, Liability-Classified Equity Contracts Blended Statutory Tax Rate, Liability-Classified Equity Contracts Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Total interest expense Interest Expense, Operating Commercial letters of credit and SBLCs Letter of Credit [Member] Document Fiscal Period Focus Document Fiscal Period Focus Lending and loan servicing fees Lending and loan servicing fees [Member] Lending fees [Member] Derivative Instruments Derivatives, Fair Value [Line Items] Debt securities Total interest income on debt securities Interest Income, Debt Securities, Operating Award Timing Method Award Timing Method [Text Block] Nonaccrual loans Financing Receivable, Excluding Accrued Interest, Nonaccrual AFS and HTM, accrued interest Debt Securities, Available-For-Sale And Held-To-Maturity, Accrued Interest, After Allowance For Credit Loss Debt Securities, Available-For-Sale And Held-To-Maturity, Accrued Interest, After Allowance For Credit Loss Award Type [Axis] Award Type [Axis] Foreign Currency Translation Adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Hedging Relationship [Domain] Hedging Relationship [Domain] Parent company Parent Company [Member] Within One Year Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, Year One Trading Symbol Trading Symbol Nontaxable interest Interest Income, Securities, Operating, Tax Exempt After Ten Years Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, after Year 10 Accrued expenses and other liabilities Accrued Liabilities and Other Liabilities Entity Address, City or Town Entity Address, City or Town Fair value of collateral, discount Valuation Technique, Fair Value Of Collateral Discount [Member] Valuation Technique, Fair Value Of Collateral Discount [Member] Restricted equity securities, at cost Total restricted equity securities Federal Home Loan Bank Stock and Federal Reserve Bank Stock Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount RSUs Restricted Stock Units (RSUs) [Member] Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Allowance for Credit Losses Credit Loss, Financial Instrument [Policy Text Block] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Loans Financing Receivables, After Allowance For Credit Loss, Average Amount Outstanding Financing Receivables, After Allowance For Credit Loss, Average Amount Outstanding Entity Emerging Growth Company Entity Emerging Growth Company Schedule of Debt Securities, Held-to-Maturity Debt Securities, Held-to-Maturity [Table Text Block] After One Year through Five Years Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, after Year One Through Five Stock options outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Unfunded Credit Commitments Unfunded Loan Commitment [Member] Total noninterest income Noninterest income Noninterest Income Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Gross Unrealized Losses Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Total other assets Other Assets, Fair Value Disclosure Loans Receivable and Allowance for Credit Losses Loans, Notes, Trade and Other Receivables Disclosure [Text Block] NONINTEREST EXPENSE Noninterest Expense [Abstract] Cash and due from banks Cash and Due from Banks PAM - Affordable housing partnership, tax credit, and CRA investments Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization Expense Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Carrying value Guarantor Obligations, Current Carrying Value Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] After One Year through Five Years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Expire After Three Years Through Five Years Other Commitment, to be Paid, Year Four and Five Pledged Status [Domain] Pledged Status [Domain] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Income tax expense Income Tax Expense (Benefit) Debt instrument, basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Other assets Other Assets Type of Guarantees [Domain] Type of Guarantees [Domain] [Domain] for Type of Guarantees [Axis] Government National Mortgage Association (GNMA) Government National Mortgage Association (GNMA) [Member] Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Derivative Instruments Designated as Hedging Instruments Designated as Hedging Instrument [Member] Tax credits and CRA investments Tax Credit and CRA Investments Tax Credit and CRA Investments Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Hedging Relationship [Axis] Hedging Relationship [Axis] Within One Year Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Loans, Leases and Unfunded Credit Commitments Loans, Leases And Unfunded Credit Commitments [Member] Loans, Leases And Unfunded Credit Commitments Single-family residential (“SFR”) SFR Single Family [Member] Loans held-for-investment, measurement input Loans Receivable, Measurement Input Loans Receivable, Measurement Input Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Various Stock Compensation Plans and Agreements Stock Compensation Plans And Agreements, Various Plans and Agreements [Member] Stock Compensation Plans And Agreements, Various Plans and Agreements All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Expire After Five Years Other Commitment, to be Paid, after Year Five Other (loss) income Noninterest Income, Other Operating Income Outstanding, at beginning of period (in shares) Outstanding, at end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Collars Collars [Member] Collars [Member] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Loans transferred from held-for-investment to held-for-sale Financing Receivable, Excluding Accrued Interest, Reclassification to Held-for-Sale Gross Unrealized Losses Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss Consumer and Business Banking Consumer and Business Banking [Member] A component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Proceeds from sales Proceeds from Sale of Debt Securities, Available-for-Sale Available-for-sale (“AFS”), at fair value (amortized cost of $14,546,038 and $13,619,781) Fair value Fair Value Debt Securities, Available-for-Sale, Excluding Accrued Interest Proceeds from sales of OREO Proceeds from Sale of Other Real Estate Net interest income before provision for credit losses Net interest income before provision for (reversal of) credit losses Interest Income (Expense), Operating Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Amortized Cost Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss Derivative liabilities, measurement input Derivative Liability, Measurement Input Swaps Swap [Member] Equity Components [Axis] Equity Components [Axis] Year 4 Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year Affordable housing partnership investments Affordable housing partnership [Member] Affordable housing partnership Derivative, cash collateral received, including amount offset by fair value assets, and excess cash amount Derivative, Cash Collateral Received, Including Amount Offset by Fair Value Assets, and Excess Cash Amount Derivative, Cash Collateral Received, Including Amount Offset by Fair Value Assets, and Excess Cash Amount Standby Letters of Credit Standby Letters of Credit [Member] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Expire in One Year or Less Other Commitment, to be Paid, Year One Number of reportable segments Number of Reportable Segments Cliff Cliff Vesting [Member] Cliff Vesting [Member] Cash dividends paid Payments of Ordinary Dividends CRE Commercial Real Estate [Member] Litigation Litigation [Policy Text Block] Litigation [Policy Text Block] Entity Address, State or Province Entity Address, State or Province Total interest and dividend income Interest and Dividend Income, Operating Financial Asset, Period Past Due [Domain] Financial Asset, Aging [Domain] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Total loans held-for-investment Loans Receivable, Fair Value Disclosure Individual: Individual [Axis] Criticized (accrual) Criticized (Accrual) [Member] Criticized (Accrual) Schedule of Financing Receivable, Modified, Payment Performance Financing Receivable, Modified, Past Due [Table Text Block] Mortgage servicing rights Servicing Asset at Amortized Cost Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Demand, checking, savings and money market deposits Demand, checking, savings and money market The aggregate of all deposit liabilities held by the entity excluding time deposits. Entity Interactive Data Current Entity Interactive Data Current Loans Receivable and Allowance for Credit Losses Accounts and Financing Receivable, after Allowance for Credit Loss, Current and Noncurrent [Abstract] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Loans Modified Financing Receivable, Modified [Line Items] Financing Receivable, Modified [Line Items] Home equity lines of credit (“HELOCs”) HELOCs Home Equity Line of Credit [Member] Net (gains) losses on OREO write-downs and sales Gains (Losses) on Sales of Other Real Estate INTEREST AND DIVIDEND INCOME Interest and Dividend Income, Operating [Abstract] Collateral Received Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset Total noninterest expense Noninterest Expense After One Year through Five Years Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, after Year One Through Five Payment Delay Weighted-average Payment Delay (in years) Payment Deferral [Member] Deposits Interest Expense, Deposits NONINTEREST INCOME Noninterest Income [Abstract] Loans held-for-sale Loans Held-For-Sale [Member] Loans Held-For-Sale Purchased options Purchased Options [Member] Purchased Options [Member] Entity Central Index Key Entity Central Index Key Maximum exposure of RPAs with protection sold Credit Derivative, Maximum Exposure, Undiscounted PEO Name PEO Name Net derivative gains Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Summary of carrying amounts and fair values of the Company's financial instruments Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Schedule of Loans Held-For-Investment by Loan Portfolio Segments, Internal Risk Ratings, Gross Write-Offs and Vintage Year Financing Receivable Credit Quality Indicators [Table Text Block] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Originations Payment for Origination, Loan, Mortgage, Held-for-Sale Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value PAM - Affordable housing partnership, tax credit, and CRA investments Investment Program, Proportional Amortization Method, Elected, Commitment Noninterest-bearing Noninterest-Bearing Deposit Liabilities Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Netting adjustments Derivative Asset, Subject to Master Netting Arrangement, Gross Liability and Collateral, Obligation to Return Cash, Offset Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Derivative, nonmonetary notional amount, energy measure Derivative, Nonmonetary Notional Amount, Energy Measure Number of companies that issued the equity (issuers portion only) Number of Companies that Issued the Equity Contracts (Issuers Portion Only) Number of Companies that Issued the Equity Contracts (Issuers Portion Only) RPAs — protection purchased Long [Member] Balance Sheet Location [Axis] Statement of Financial Position Location, Balance [Axis] Vesting [Domain] Vesting [Domain] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Affordable housing partnership, tax credit and CRA investments Payments for (Proceeds from) Affordable Housing Partnerships, Tax Credit and CRA Investments The net cash outflow or inflow for the increase (decrease) in investments in qualified affordable housing partnerships and other investments that qualify for Community Reinvestment Act (CRA) credits or other types of tax credits. Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two AOCI, Net of Tax AOCI Attributable to Parent [Member] Net change in accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Investments [Domain] Investments [Domain] Gross write-offs Revolving Loans Converted to Term Loans Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Allowance for unfunded credit reserves Off-Balance-Sheet, Credit Loss, Liability [Roll Forward] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] Fair Value as of Grant Date Award Grant Date Fair Value Derivative assets: Derivative Instrument Detail [Abstract] Year 5 Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year Commercial and industrial (“C&I”) C&I Commercial And Industrial Loan [Member] Commercial And Industrial Loan [Member] Compensation and employee benefits Labor and Related Expense Total adjustments Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Total unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Amortization of tax credit and CRA investments Noninterest Expense, Amortization of Tax Credit and CRA Investments Amortization of investments in projects that qualify for Community Reinvestment Act ("CRA") and other tax credits, included as a component of noninterest expense. Document Quarterly Report Document Quarterly Report Available-for-sale debt securities, Less than 12 Months, Fair Value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Schedule of Quantitative Information About Significant Unobservable Inputs Used in the Valuation of level 3 Fair Value Measurements Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] After Five Years through Ten Years Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, after Year 5 Through 10 Counterparty Name [Domain] Counterparty Name [Domain] Schedule of Amortized Cost of Loans on Nonaccrual Status With No Related Allowance for Loan Losses Financing Receivable, Nonaccrual [Table Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] U.S. government agency and U.S. government-sponsored enterprise debt securities U.S. government agency and U.S. government-sponsored enterprise debt securities US Government-sponsored Enterprises Debt Securities [Member] Redemption of FHLB stock, net Payments for (Proceeds from) Federal Home Loan Bank Stock Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Customer-related positions: Not Designated as Hedging Instrument, Trading [Member] Investment Type [Axis] Investment Type [Axis] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities Residential Mortgage Backed Securities Issued By US Government Agencies And Government Sponsored Enterprise [Member] Debt securities collateralized by residential real estate mortgage loans (mortgages), issued by US Government Agencies, such as the Government National Mortgage Association (GNMA or Ginnie Mae). Includes debt securities issued by Government Sponsored Enterprises, such as the Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB). Total residential mortgage Total Residential Mortgage [Member] Total Residential Mortgage [Member] Net change in repurchase agreements Proceeds From Repurchase Agreements Proceeds From Repurchase Agreements Non-PEO NEO Non-PEO NEO [Member] Letters of credit Letters of Credit Outstanding, Amount Derivative liability granted number of shares Derivative, Underlying Investment, Shares Position [Domain] Position [Domain] Federal Home Loan Bank (“FHLB”) advances FHLB advances Total FHLB advances Advance from Federal Home Loan Bank Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Foreign exchange income Foreign Currency Gain (Loss) [Member] Award Type [Domain] Award Type [Domain] (Losses) gains recognized in AOCI: Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Time-Based RSUs Time-Based RSUs Time Based Restricted Stock Settled in Stock [Member] Time-based restricted stock awards as awarded by a company to their employees as a form of incentive compensation. Compensation Amount Outstanding Recovery Compensation Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Foreign exchange contracts Foreign Exchange Contract [Member] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Estimated Fair Value Estimate of Fair Value Measurement [Member] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] After One Year through Five Years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Current, Past Due or Nonaccrual Loans Financing Receivable, Past Due [Line Items] After Five Years through Ten Years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Loan commitments Loan Origination Commitments [Member] PAM - Affordable housing partnership, tax credit, and CRA investments Investment, Proportional Amortization Method, Elected, Amount Accumulated other comprehensive loss (“AOCI”), net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Long-term debt and finance lease liabilities Long-Term Debt and Lease Obligation Financial Instruments [Domain] Financial Instruments [Domain] After Ten Years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Schedule of Pre-Tax Changes in AOCI from Cash Flows Hedges Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Minimum Minimum [Member] Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Accrued interest receivable Financing Receivable, Accrued Interest, before Allowance for Credit Loss LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES Accounts, Notes, Loans and Financing Receivable [Line Items] Company Selected Measure Name Company Selected Measure Name Foreign government bonds Foreign Government Bonds [Member] Foreign Government Bonds [Member] Total amortization Amortization Amortization Fair Value Measurement [Domain] Fair Value Measurement [Domain] Federal Home Loan Bank Advances and Long-Term Debt Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Net income, diluted Net Income (Loss) Available to Common Stockholders, Diluted Collateral [Domain] Collateral Held [Domain] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Diluted (in shares) Diluted weighted-average number of shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Schedule of (Decrease) Increase in Fair Value of Assets for which a Nonrecurring Fair Value Adjustment Has Been Recognized Fair Value Adjustment of Certain Assets on Nonrecurring Basis [Table Text Block] Tabular disclosure of the increase (decrease) in value of certain assets that are measured at fair value on a nonrecurring basis for which a fair value adjustment has been recognized. Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Derivative [Table] Derivative [Table] Entity Small Business Entity Small Business Weighted average remaining maturity of outstanding RPAs Derivative, Average Remaining Maturity Document Transition Report Document Transition Report Within One Year Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, Year One After One Year through Five Years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Underlying Securities Award Underlying Securities Amount Repayment of lease liabilities Repayments of Other Long-Term Debt Gross realized gains from sales Debt Securities, Available-for-Sale, Realized Gain Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Schedule of Financing Receivable Credit Quality Indicators, Key Credit Risk Characteristics and Macroeconomic Variables Financing Receivable Credit Quality Indicators, Key Credit Risk Characteristics and Macroeconomic Variables [Table Text Block] Financing Receivable Credit Quality Indicators, Key Credit Risk Characteristics and Macroeconomic Variables Fixed Fixed [Member] Fixed Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Aggregate fair value of derivative instruments in net liability position Derivative, Net Liability Position, Aggregate Fair Value Net Amount Derivative Asset, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Document Type Document Type Level 3 Level 3 Fair Value, Inputs, Level 3 [Member] Stockholders' Equity and Earnings Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Loss Contingencies [Table] Loss Contingencies [Table] Assets Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Assets [Abstract] Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Assets [Abstract] Additional paid-in capital Additional Paid in Capital Gross write-offs year Revolving Loans Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff Interest-bearing deposits with banks Interest Bearing Deposits With Banks Interest-bearing deposits with banks include cash placed with other banks with original maturities greater than three months and less than one year. Resale agreements Offsetting Securities Purchased under Agreements to Resell [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] Proceeds from sales of loans originally classified as held-for-investment Proceeds from Sale of Finance Receivables Stock repurchase program, amount authorized Share Repurchase Program, Authorized, Amount Gross write-offs year 2 Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff Total nonaccrual loans included above Financing Receivable, Excluding Accrued Interest, Nonaccrual, Modified, After 12 Months Financing Receivable, Excluding Accrued Interest, Nonaccrual, Modified, After 12 Months Quantitative information Fair Value Measurement Inputs and Valuation Techniques [Line Items] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Stock tendered for payment of withholding taxes Payment, Tax Withholding, Share-Based Payment Arrangement Total revenue before provision for (reversal of) credit losses Revenue, Before Provision For Loan Loss Revenue, Before Provision For Loan Loss Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Borrowings Proceeds from FHLBank Borrowings, Financing Activities Net income Net income Net Income (Loss) Available to Common Stockholders, Basic Allowance for credit losses Financing Receivable And Off Balance Sheet Credit Loss Allowance Financing Receivable And Off Balance Sheet Credit Loss Allowance Weighted-average yield Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity [Abstract] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Derivative, cash collateral posted against derivative liabilities, including amount offset the derivative fair value liabilities, and excess cash amount Derivative, Cash Collateral Posted Against Derivative Liabilities, Including Amount Offset the Derivative Fair Value Liabilities, and Excess Cash Amount Derivative, Cash Collateral Posted Against Derivative Liabilities, Including Amount Offset the Derivative Fair Value Liabilities, and Excess Cash Amount Other comprehensive (loss) income Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Financing receivable, modified, accumulated Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months Written options Written Option [Member] Written Option [Member] Federal Housing Administration Loan Federal Housing Administration Loan [Member] Level 1 Level 1 Fair Value, Inputs, Level 1 [Member] Repayments Payments of FHLBank Borrowings, Financing Activities Diluted (in dollars per share) Diluted EPS (in dollars per share) Earnings Per Share, Diluted Deposit insurance premiums and regulatory assessments Federal Deposit Insurance Corporation Premium Expense Multifamily residential Multifamily Multifamily Residential Multifamily [Member] Noncash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] After Five Years through Ten Years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Schedule of the Gross Realized Gains and Tax Expense, Available-for-Sale Schedule of Realized Gain (Loss) [Table Text Block] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Total Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount Loans held-for-sale Financing Receivable, Held-for-Sale Treasury stock, shares (in shares) Treasury Stock, Common, Shares MCBI Statutory Trust I MCBI Statutory Trust I [Member] Represents East West Metro Bank Trust, a statutory business trust formed by the entity for the purpose of issuing junior subordinated debt to third party investors. Long-term debt and finance lease liabilities Interest Expense, Other Long-Term Debt Derivative Liability, Statement of Financial Position [Extensible Enumeration] Derivative Liability, Statement of Financial Position [Extensible Enumeration] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Wealth management fees Wealth Management Fees Wealth Management Fees Tax credits and benefits: Investments in Qualified Affordable Housing Partnerships, Net, And Related Unfunded Commitments [Abstract] Investments in Qualified Affordable Housing Partnerships, Net, And Related Unfunded Commitments Less: Fair value changes of liability-classified equity contracts, net of tax Fair Value Changes Of Liability-Classified Equity Contracts Fair Value Changes Of Liability-Classified Equity Contracts Term Extension Weighted-average Term Extension (in years) Extended Maturity [Member] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Weighted Average Yield Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity [Abstract] Income taxes, net Income Taxes Paid, Net Expire After One Year Through Three Years Other Commitment, to be Paid, Year Two and Three Commitments to Extend Credit Commitments to Extend Credit [Member] Total Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date Cash paid during the period for: Cash Paid During Period for [Abstract] Net unrealized (losses) gains arising during the period OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Derivative asset, measurement input Derivative Asset, Measurement Input Loans held-for-investment Total Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss Securities sold under repurchase agreements (“repurchase agreements”) Repurchase agreements Securities Sold under Agreements to Repurchase, Total Securities Sold under Agreements to Repurchase Schedule of Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Expiration Date Trading Arrangement Expiration Date Other Commitments [Domain] Other Commitments [Domain] Net changes in unrealized (losses) gains on AFS debt securities Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Premises and equipment (net of accumulated depreciation of $178,189 and $175,297) Property, Plant and Equipment, Net Federal Home Loan Bank Advance Method [Domain] Federal Home Loan Bank Advance Method [Domain] Federal Home Loan Bank Advance Method [Domain] Loans transferred to OREO Transfer Of Financing Receivables To Other Real Estate Owned Transfer Of Financing Receivables To Other Real Estate Owned Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Entity Current Reporting Status Entity Current Reporting Status Receivables [Abstract] Derivative [Line Items] Derivative [Line Items] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Collateral [Axis] Collateral Held [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Within One Year Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Gross derivative liabilities Derivative liabilities - Fair value Gross amounts recognized Derivative Liability, Gross Liability Including Not Subject to Master Netting Arrangement Financial Instrument [Axis] Financial Instrument [Axis] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Securities Insured or Guaranteed by Government Authorities [Axis] Securities Insured or Guaranteed by Government Authorities [Axis] Securities Insured or Guaranteed by Government Authorities Other real estate owned (“OREO”) (income) expense Other Real Estate Owned (Income) Expense Other Real Estate Owned (Income) Expense Current Fiscal Year End Date Current Fiscal Year End Date Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Total deposits Deposits Amortization of unrealized losses on transferred securities OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), Tax OREO, measurement input Other Real Estate Owned, Measurement Input Stock Repurchase Plan Stock Repurchase Plan [Member] Stock Repurchase Plan Weighted-average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] FHLB stock Federal Home Loan Bank Stock Schedule of Guarantees Outstanding Schedule of Guarantor Obligations [Table Text Block] Schedule of Resale and Repurchase Agreements Schedule of Securities Financing Transactions [Table Text Block] Net derivative liabilities Derivative Liability Other operating expense Other Noninterest Expense Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Purchases Financing Receivable, Excluding Accrued Interest, Purchase Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Pass Pass [Member] Interest rate contracts Interest rate contracts Interest Rate Contract [Member] Contracts not subject to master netting arrangements, gross amounts recognized Derivative Asset, Not Subject to Master Netting Arrangement Collateral dependent loan Financing Receivable, Collateral Dependent Financing Receivable, Collateral Dependent Available-for-sale debt securities, Gross Unrealized Loss, Total Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Credit-risk-related contingent features Credit-Risk-Related Contingent Features [Member] Credit-Risk-Related Contingent Features [Member] Schedule of Financial Assets (Liabilities) Measured at Fair Value on a Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Equity securities Equity Securities, FV-NI, Current FHLB advances: Proceeds from Issuance of Long-Term Debt [Abstract] Weighted-average anti-dilutive shares (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Weighted-average number of shares outstanding Weighted Average Number of Shares Outstanding, Diluted [Abstract] Derivative liabilities: Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Affordable Housing Partnership, Tax Credit and Community Reinvestment Act Investments, Net Affordable Housing Partnerships and Tax Credit and Other Investments, Net and Variable Interest Entities [Text Block] The entire disclosure for affordable housing partnerships, tax credit, other investments, net and variable interest entities. Schedule of Aging Analysis of Loans Financing Receivable, Past Due [Table Text Block] Interest-bearing Interest-Bearing Deposit Liabilities Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Measure: Measure [Axis] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Basis of Presentation and Current Accounting Developments Basis of Presentation and Significant Accounting Policies [Text Block] Net realized gains on AFS debt securities reclassified into net income Other Comprehensive Income Loss, Reclassification Adjustment For Sale Or Write Down Of Securities Included In Net Income, Tax Other Comprehensive Income Loss, Reclassification Adjustment For Sale Or Write Down Of Securities Included In Net Income, Tax Customer derivative income and derivative mark-to-market adjustments Customer Derivative Income And Derivative Mark-To-Market Adjustments [Member] Customer Derivative Income And Derivative Mark-To-Market Adjustments HTM debt securities: Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Consumer Lending Consumer Portfolio Segment [Member] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Common Stock and Additional Paid-in Capital Common Stock Including Additional Paid in Capital [Member] Entity Tax Identification Number Entity Tax Identification Number Gross write-offs year 4 Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff RPAs RPAs — protection sold Short [Member] Common stock, shares issued (in shares) Common Stock, Shares, Issued Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Non-agency commercial mortgage-backed securities Commercial Mortgage-Backed Securities [Member] Loans transferred from held-for-investment to held-for-sale Loan and Lease, Transfer from Held-in-Portfolio to Held-for-Sale Reversal of credit losses recognized related to the sale of security Reversal of credit losses Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Sold Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Repurchase agreements Offsetting Securities Sold under Agreements to Repurchase [Abstract] Commitments to Extend Credit Guarantor obligation, maximum potential future payment Loss Contingencies [Line Items] Total gains included in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Security Exchange Name Security Exchange Name Purchases Payments to Acquire Finance Receivables Securities purchased under resale agreements (“resale agreements”) Resale agreements Securities Purchased under Agreements to Resell, Total Securities Purchased under Agreements to Resell Lending and loan servicing fees Lending And Loan Servicing Fees LC fees and commissions, and Ancillary loan and lease fees Asset Class [Domain] Asset Class [Domain] Total gains (losses) included in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Statement [Line Items] Statement [Line Items] Collateral pledged Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Common Stock Common Stock [Member] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Add: Dilutive impact of unvested RSUs (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, Liability Offset Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, Liability Offset Statistical Measurement [Domain] Statistical Measurement [Domain] AFS debt securities, amortized cost Amortized Cost Total Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss Crude Oil Crude Oil [Member] Percentage of target award available for grant Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Target Award Available for Grant Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Target Award Available for Grant Weighted-average rate (as a percent) Long-Term Debt, Weighted Average Interest Rate, at Point in Time Asset Class [Axis] Asset Class [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Basic: Earnings Per Share, Basic [Abstract] Pledged Status [Axis] Pledged Status [Axis] Other investment income Other Investment Income [Member] Other Investment Income Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Basic (in dollars per share) Basic EPS (in dollars per share) Earnings Per Share, Basic Common stock: Common Stock [Abstract] Common Stock [Abstract] Financing Receivable, Nonaccrual [Table] Financing Receivable, Nonaccrual [Table] Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, before Offset Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, before Offset Discount Measurement Input, Discount Rate [Member] Schedule of Operating Results and Key Financial Measures by Operating Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Carrying Value of Loans Transferred, Loans Sold and Purchased for the Held-For-Investment Portfolio Schedule Of Sales, Purchases And Securitization Of Loans, And Reclassification Of Loans Held-For-Investment To (From) Loans Held-For-Sale [Table Text Block] Schedule Of Sales, Purchases And Securitization Of Loans, And Reclassification Of Loans Held-For-Investment To (From) Loans Held-For-Sale [Table Text Block] Combination: Term Extension/ Payment Delay Extended Maturity And Payment Deferral [Member] Extended Maturity And Payment Deferral Gross Unrealized Gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Measurement Input Type [Domain] Measurement Input Type [Domain] Schedule of Carrying Amounts of Assets That Were Still Held and Had Fair Value Changes Measured on a Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Liquidity discount Measurement Input, Discount for Lack of Marketability [Member] Gross write-offs Total Gross charge-offs Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Net Amount Security Purchased under Agreement to Resell, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Taxable interest Interest Income, Securities, Operating, Taxable Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts and Financing Receivables [Table] Net unrealized gains (losses) arising during the period Net unrealized (losses) gains arising during the period OCI, before Reclassifications, Net of Tax, Attributable to Parent Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Hedging Designation [Domain] Hedging Designation [Domain] Foreign currency translation adjustments Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Foreign Currency Translation Gain (Loss) Loans held-for-sale Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance TOTAL Liabilities and Equity Stockholders' Equity and Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Customer derivative income and derivative mark-to-market adjustments Customer Derivative Income (Loss), Net Of Mark-To-Market Adjustments Customer Derivative Income (Loss), Net Of Mark-To-Market Adjustments FHLB advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-Term Amounts reclassified from AOCI Net realized (gains) losses reclassified into net income Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Performance-Based RSUs Performance-Based RSUs Performance Based Restricted Stock Settled in Stock [Member] Performance-based restricted stock awards as awarded by a company to their employees as a form of incentive compensation. Private Companies Equity, Private Companies [Member] Equity, Private Companies [Member] Black-Scholes option pricing model Valuation Technique, Black-Scholes-Merton Model [Member] Derivative assets Offsetting Derivative Assets [Abstract] Less: Security Collateral Received Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Asset Offset Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Asset Offset Deposit account expense Deposit Account Expense Deposit Related Expenses Treasury Stock Treasury Stock, Common [Member] Year 1 Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Pay vs Performance Disclosure [Line Items] Operating lease liabilities Operating Lease, Liability Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent 90+ Days Past Due Financial Asset, Equal to or Greater than 90 Days Past Due [Member] LIABILITIES Liabilities [Abstract] Net realized gains on AFS debt securities reclassified into net income Other Comprehensive Income Loss, Reclassification Adjustment For Sale Or Write Down Of Securities Included In Net Income, Net of Tax Other Comprehensive Income Loss, Reclassification Adjustment For Sale Or Write Down Of Securities Included In Net Income, Net of Tax Total net (charge-offs) recoveries Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) Derivative assets: Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Multifamily residential loans sold or securitized with recourse Multifamily Residential [Member] Multifamily Residential [Member] Year 3 Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Gross write-offs year Prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] COMPREHENSIVE INCOME Comprehensive Income (Loss), Net of Tax, Attributable to Parent Measurement Input Type [Axis] Measurement Input Type [Axis] Name Measure Name Within One Year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances Net change Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Net change in deposits Increase (Decrease) in Deposits Proceeds from repayments, maturities and redemptions Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Financing Receivable, Nonaccrual [Line Items] Financing Receivable, Nonaccrual [Line Items] Schedule of Financing Receivable, Modified, Subsequent Default Financing Receivable, Modified, Subsequent Default [Table Text Block] Netting adjustments Derivative Liability, Subject to Master Netting Arrangement, Gross Asset and Collateral, Right to Reclaim Cash, Offset AFS debt securities: Available-for-Sale Securities, Debt Maturities [Abstract] Long-term debt Long-Term Debt Schedule of Components of Other Comprehensive Income (Loss), Reclassifications to Net Income and the Related Tax Effects Comprehensive Income (Loss) [Table Text Block] TOTAL Segment assets Assets CASH FLOWS FROM INVESTING ACTIVITIES Cash Provided by (Used in) Investing Activity, Continuing Operation [Abstract] Total affordable housing partnership, tax credit, and CRA unfunded commitments Affordable Housing Partnership, Tax Credit, and CRA Investments, Liabilities Unfunded Commitments, Total Affordable Housing Partnership, Tax Credit, and CRA Investments, Liabilities Unfunded Commitments, Total Fair value of collateral, selling cost Valuation Technique, Fair Value Of Valuation Technique, Fair Value Of Property, Selling Cost [Member] Valuation Technique, Fair Value Of Property, Selling Cost Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] AFS and HTM debt securities carrying value Debt Securities CASH FLOWS FROM OPERATING ACTIVITIES Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Schedule of Restricted Equity Securities Schedule Of Restricted Equity Securities [Table Text Block] Schedule of Restricted Equity Securities [Table Text Block] Proceeds from sales and paydowns/payoffs of loans originally classified as held-for-sale Proceeds from Sale and Collection, Loan, Held-for-Sale Gross Amounts Not Offset on the Consolidated Balance Sheet Assets Purchased under Agreements to Resell Gross Amounts Not Offset [Abstract] No definition required. HTM debt securities, fair value Fair Value Debt Securities, Held-to-Maturity, Fair Value Dividends declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Schedule of Available-for-sale Debt Securities Debt Securities, Available-for-Sale [Line Items] After Five Years through Ten Years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Level 2 Level 2 Fair Value, Inputs, Level 2 [Member] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Asset Pledged as Collateral Asset Pledged as Collateral [Member] Stockholders' Equity and Earnings Per Share [Abstract] Stockholders' Equity and Earnings Per Share [Abstract] Stockholders' Equity and Earnings Per Share [Abstract] Plan Name [Axis] Plan Name [Axis] PEO PEO [Member] Net change in short-term FHLB advances Proceeds From (Repayments Of) Short-Term Federal Home Loan Bank Advances Proceeds From (Repayments Of) Short-Term Federal Home Loan Bank Advances Schedule of Contractual Maturities of AFS and HTM Debt Securities Investments Classified by Contractual Maturity Date [Table Text Block] Junior Subordinated Debt Junior Subordinated Debt [Member] Time deposits Time Deposits Retained Earnings Retained Earnings [Member] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD CASH AND CASH EQUIVALENTS, END OF PERIOD Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Loans Sold or Securitized with Recourse Guarantee Obligations [Member] Net derivative assets Derivative Asset Available-for-sale debt securities, 12 Months or More, Fair Value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Net unrealized (losses) gains arising during the period OCI, before Reclassifications, before Tax, Attributable to Parent Economic hedges and other: Not Designated as Hedging Instrument, Economic Hedge [Member] Allowance for Credit Losses Debt Securities, Available-for-Sale and Held-to-Maturity, Allowance for Credit Loss Fair Value, Measurements, Nonrecurring Fair Value, Nonrecurring [Member] Expire After Five Years Guarantor Obligations, Maximum Exposure, Undiscounted, Expire After Year Five Guarantor Obligations, Maximum Exposure, Undiscounted, Expire After Year Five Financing Receivable, Troubled Debt Restructuring [Table] Financing Receivable, Modified [Table] Other investment income Noninterest Income, Other (Reversal of) provision for credit losses on unfunded credit commitments Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) FRB of San Francisco stock Federal Reserve Bank Stock AFS debt securities: Debt Securities, Available-for-Sale [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Investments in Tax Credit and Other Investments, Net [Table] Investments in Tax Credit and Other Investments, Net [Table] Investments in Tax Credit and Other Investments, Net [Table] Notional amount Notional Amount Derivative, Notional Amount Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Revolving Loans Financing Receivable, Excluding Accrued Interest, Revolving Loans Sold in Secondary Market Loans Sold In Secondary Market [Member] Loans Sold In Secondary Market [Member] OREO Other Real Estate City Area Code City Area Code Schedule of Activity in the Allowance for Credit Losses Financing Receivable, Allowance for Credit Loss [Table Text Block] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Long-term debt total Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust Purchased Loans Receivable, Purchased [Member] Loans Receivable, Purchased [Member] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Accrued interest receivable Interest Receivable Schedule of Composition of Loans Held-For-Investment Schedule Of Financing Receivables, Carrying Amount [Table Text Block] Schedule Of Financing Receivables, Carrying Amount [Table Text Block] Natural Gas Natural Gas [Member] Cash Flow Hedging Cash Flow Hedging [Member] Equity securities Equity Securities, FV-NI Goodwill Goodwill Equity contracts Equity Contract [Member] Criticized (nonaccrual) Criticized (Nonaccrual) [Member] Criticized (Nonaccrual) After Five Years through Ten Years Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, after Year 5 Through 10 Total Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value Loans held-for-sale: Loans Held for Sale, Operating [Abstract] Loans Held for Sale, Operating [Abstract] Interest-bearing deposits with banks Proceeds from (Payments for) in Interest-Bearing Deposits in Banks Amortized cost Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date [Abstract] SUPPLEMENTAL CASH FLOW INFORMATION: Supplemental Cash Flow Information [Abstract] Equity method of accounting and other: Amortization Equity Method Accounting and Other [Abstract] Amortization Equity Method Accounting and Other Other Performance Measure, Amount Other Performance Measure, Amount Gross Unrealized Gains Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain Derivative Instrument [Axis] Derivative Instrument [Axis] Vesting [Axis] Vesting [Axis] Financial liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Net deferred loan fees and net unamortized premiums Financing Receivable, Unamortized Loan Cost (Fee) and Purchase Premium (Discount) Affordable housing partnership, tax credit and CRA investments, net: Equity Securities, FV-NI and without Readily Determinable Fair Value [Abstract] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Commercial Letters of Credit Commercial Letters Of Credit [Member] Commercial Letters Of Credit [Member] Interest Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Selling cost Measurement Input, Cost to Sell [Member] Plan Name [Domain] Plan Name [Domain] Carrying Amount Reported Value Measurement [Member] Weighted average period to recognize unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Equity [Abstract] Equity [Abstract] Resale agreements Interest Income, Securities Purchased under Agreements to Resell Business Segments Segment Reporting Disclosure [Text Block] Derivatives not Designated as Hedging Instruments Not Designated as Hedging Instrument [Member] Fair Value, Financial Assets and Liabilities Measured on Recurring and Nonrecurring Basis Fair Value, Assets Measured on a Nonrecurring Basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] U.S. Treasury securities US Treasury Securities [Member] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Computer and software related expenses Information Technology and Data Processing Schedule of Net Gains (Losses) Recognized on the Consolidated Statements of Income Related to Derivatives not Designated as Hedging Instruments Gains (Losses) On Derivatives Not Designated As Hedging Instruments Under GAAP [Table Text Block] Gains (Losses) On Derivatives Not Designated As Hedging Instruments Under GAAP Net changes in unrealized (losses) gains on cash flow hedges Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Weighted Average Weighted Average [Member] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Loans held-for-investment Loans Receivable [Member] Liabilities - Unfunded Commitments Investments in Tax Credit and Other Investments, Net, And Related Unfunded Commitments [Abstract] Investments in Tax Credit and Other Investments, Net, And Related Unfunded Commitments Equity volatility Measurement Input, Price Volatility [Member] Stock repurchase program, amount repurchased Stock Repurchased During Period, Value Schedule of the Changes in Components of Accumulated Other Comprehensive Income Balances Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Securities Purchased under Resale Agreements and Sold Under Repurchase Agreements Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block] Total Nonaccrual Loans Nonperforming Financial Instruments [Member] Depreciation, amortization and accretion, net Depreciation, Depletion and Amortization Other noninterest expense Noninterest Expense, Other Than Labor And Related Expense Noninterest Expense, Other Than Labor And Related Expense Before-Tax Other Comprehensive Income (Loss), before Tax [Abstract] Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities [Abstract] Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities [Abstract] Investments in Qualified Affordable Housing Partnerships, Net [Abstract] Non-agency residential mortgage-backed securities Residential Mortgage-Backed Securities [Member] Arrangement Duration Trading Arrangement Duration Segments [Axis] Segments [Axis] Forwards and spot Forward And Spot [Member] Forward And Spot Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Other investing activities, net Payment for (Proceeds from) Other Investing Activity Other operating activities, net Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Stock Compensation Plans Share-Based Payment Arrangement [Text Block] Amortization of unrealized losses on debt securities transferred from AFS to HTM Amortization of unrealized losses on transferred securities OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), after Tax Allowance for unfunded credit commitments, beginning of period Allowance for unfunded credit commitments, end of period Allowance for unfunded credit commitments Off-Balance-Sheet, Credit Loss, Liability ASSETS Assets [Abstract] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Other Commitments [Axis] Other Commitments [Axis] Debt Instrument [Axis] Debt Instrument [Axis] Forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Fair Value Measurement and Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Collars and corridors Collars and Corridors [Member] Collars and Corridors [Member] STOCKHOLDERS’ EQUITY Equity, Attributable to Parent [Abstract] Sales Financing Receivable, Excluding Accrued Interest, Sale Schedule of Modified Loans Financing Receivable, Modified [Table Text Block] Repurchase of common stock pursuant to the stock repurchase program/various stock compensation plans and agreements Treasury Stock, Value, Acquired, Cost Method Net unrealized gains, net of tax, recorded in AOCI expected to be reclassified into earnings during next 12 months Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Fair Value Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value Accruing Loans 30-59 Days Past Due Financial Asset, 30 to 59 Days Past Due [Member] AFS debt securities: Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Allowance for credit losses on available-for-sale debt securities Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Not Previously Recorded Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] Contracts not subject to master netting arrangements, gross amounts recognized Derivative Liability, Not Subject to Master Netting Arrangement Expire After Three Years Through Five Years Guarantor Obligations, Maximum Exposure, Undiscounted, Expire In Years Four Through Five Guarantor Obligations, Maximum Exposure, Undiscounted, Expire In Years Four Through Five Equity method of accounting and other: PAM Equity Method Accounting and Other [Abstract] PAM Equity Method Accounting and Other Commitment to lend Financing Receivable, Modified, Commitment to Lend Related tax expense Tax Expense (Benefit) on Sale of Available for Sale Debt Investment Securities Tax Expense (Benefit) on Sale of Available for Sale Debt Investment Securities Entity Registrant Name Entity Registrant Name Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Federal Home Loan Bank Advance Method [Axis] Federal Home Loan Bank Advance Method [Axis] Federal Home Loan Bank Advance Method Other consumer Other Consumer Other Consumer [Member] Class of financing receivable related to consumer loans, except for residential single-family loans and HELOCs Provision for credit losses Provision for credit losses on loans, leases and unfunded credit commitments Provision for (reversal of) credit losses Provision for Loan, Lease, and Other Losses Number of available-for-sale debt securities in an unrealized loss position Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions Deposits: Deposits [Abstract] Total Accruing Past Due Loans Financial Asset, Past Due [Member] Equity securities without readily determinable fair values Equity Securities without Readily Determinable Fair Value, Amount Energy [Axis] Energy [Axis] Number of operating segments Number of Operating Segments Schedule of Debt Schedule of Debt [Table Text Block] Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Restatement Determination Date: Restatement Determination Date [Axis] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Total CRE Total Commercial Real Estate [Member] Total Commercial Real Estate [Member] Name Trading Arrangement, Individual Name Schedule of Short-Term Debt [Table] Short-Term Debt [Table] Financing receivable, modified, subsequent default Financing Receivable, Modified, Subsequent Default Loans held-for-sale Loan, Held-for-Sale, Fair Value Disclosure Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Non-agency mortgage-backed securities Non-Agency Mortgage Backed Securities [Member] Non-Agency Mortgage Backed Securities Share Repurchase Program [Axis] Share Repurchase Program [Axis] Name Awards Close in Time to MNPI Disclosures, Individual Name Outstanding, at beginning of period (in dollars per share) Outstanding, at end of period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Energy [Domain] Energy [Domain] Guarantor obligation, maximum potential future payment [Abstract] Guarantor Obligations, Maximum Potential Future Payments [Abstract] Guarantor Obligations, Maximum Potential Future Payments Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Total Other Commitment Net Amount Security Sold under Agreement to Repurchase, Including Not Subject to Master Netting Arrangement, after Offset and Deduction SFR loans sold or securitized with recourse Single Family Residential [Member] Single Family Residential [Member] Individual analysis of each investment Valuation Technique, Individual Analysis [Member] Valuation Technique, Individual Analysis [Member] Net unrealized (losses) gains arising during the period OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax Net unrealized (losses) gains arising during the period Other Comprehensive Income (Loss) before Reclassifications, Tax Segments [Domain] Segments [Domain] Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Fair value adjustment Assets, Fair Value Adjustment Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Balance Sheet Location [Domain] Statement of Financial Position Location, Balance [Domain] Restricted equity securities Dividend Income, Investments in Federal Home Loan Bank and Federal Reserve Bank Stock Dividend income derived from investments in Federal Home Loan Bank and Federal Reserve Bank stock. Schedule of Recent Accounting Pronouncements Yet to be Adopted Accounting Standards Update and Change in Accounting Principle [Table Text Block] 30 - 89 Days Past Due Financial Asset, 30 To 89 Days Past Due [Member] Financial Asset, 30 To 89 Days Past Due Derivative assets: Derivative Asset [Abstract] Debt Securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] INTEREST EXPENSE Interest Expense, Operating and Nonoperating [Abstract] Consolidation Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block] Premises and equipment, accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Tax credit and CRA investments Tax Credit And CRA investments [Member] Tax Credit And CRA investments Less: Master netting agreements Less: Master netting agreements Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Purchases Payments to Acquire Debt Securities, Available-for-Sale Municipal securities US States and Political Subdivisions Debt Securities [Member] Accrued interest payable Interest Payable Year 2 Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Fair value Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Financial Asset, Period Past Due [Axis] Financial Asset, Aging [Axis] Schedule of Other Than Temporary Impairment, Credit Losses Recognized in Earnings [Table] Schedule of Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table] All Executive Categories All Executive Categories [Member] Common stock, $0.001 par value, 200,000,000 shares authorized; 171,054,988 and 170,487,574 shares issued Common Stock, Value, Issued Loans receivable, including fees Interest and Fee Income, Loans and Leases COMMITMENTS AND CONTINGENCIES (Note 9) Commitments and Contingencies Tax credits and CRA investments Tax Credit and CRA Investments, Commitment Amount of commitment or contingent commitments to investments in certain limited partnerships that qualify for Community Reinvestment Act (CRA) credits or other types of tax credits. Schedule of Affordable Housing, Tax Credit and CRA Investments, Net and Related Unfunded Commitments Schedule of Affordable Housing and Tax Credits and CRA Investments and Unfunded Commitments [Table Text Block] Schedule of Affordable Housing and Tax Credits and CRA Investments and Unfunded Commitments [Table Text Block] Gross write-offs year 1 Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff Increase in allowance for credit losses Financing Receivable And Off Balance Sheet Credit Loss Allowance, Period Increase (Decrease) Financing Receivable And Off Balance Sheet Credit Loss Allowance, Period Increase (Decrease) Debt securities: Marketable Securities [Abstract] Interest and dividend income (for cash flow hedges on loans) Interest Income [Member] Total debt securities Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss [Abstract] Recorded investment in consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process Mortgage Loans in Process of Foreclosure, Amount Short-Term Debt [Line Items] Short-Term Debt [Line Items] Gross write-offs Gross Writeoff [Member] Gross Writeoff Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount After Ten Years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Diluted: Earnings Per Share, Diluted [Abstract] Accruing Loans 60-89 Days Past Due Financial Asset, 60 to 89 Days Past Due [Member] Tax credit and CRA investments Tax credit and CRA Investments, Tax Credits And Other Tax Benefits, Amount Tax credit and CRA Investments, Tax Credits And Other Tax Benefits, Amount Investments in Tax Credit and Other Investments, Net [Line Items] Investments in Tax Credit and Other Investments, Net [Line Items] Investments in Tax Credit and Other Investments, Net [Line Items] Hedging Designation [Axis] Hedging Designation [Axis] Federal funds purchased and other short-term borrowings Interest Expense, Other Short-Term Borrowings Balance Sheet Offsetting Balance Sheet Offsetting Policy [Policy Text Block] Balance Sheet Offsetting Policy Allowance for Credit Losses Allowance for credit losses on held-to-maturity debt securities Debt Securities, Held-to-Maturity, Allowance for Credit Loss Net Amount Derivative Liability, Including Not Subject to Master Netting Arrangement, after Offset and Deduction (Gains) losses reclassified from AOCI into earnings: Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Derivative Contract [Domain] Derivative Contract [Domain] Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] After Ten Years Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 10 All Individuals All Individuals [Member] Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] Residential Real Estate Properties Residential Real Estate [Member] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Purchases of premises and equipment, net Payments to Acquire Property, Plant, and Equipment Name Forgone Recovery, Individual Name Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Interest Rates Federal Home Loan Bank, Advance, Branch of FHLBank, Interest Rate Total nonaccrual loans with no related ALLL Financing Receivable, Nonaccrual, No Allowance Gross write-offs year 5 Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff Schedule of Notional and Fair Values of Derivatives Schedule of Derivative Instruments [Table Text Block] Loans Sold or Securitized With Recourse Loans Sold or Securitized With Recourse [Member] Loans Sold or Securitized With Recourse [Member] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Original maturity (in years) Derivative, Original Maturity Period Derivative, Original Maturity Period Commercial Lending Commercial Portfolio Segment [Member] Derivative liabilities: Derivative Liability [Abstract] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Commercial Banking Commercial Banking [Member] A component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Title of each class Title of 12(b) Security Provision for (reversal of) credit losses on loans Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) 2021 Stock Incentive Plan 2021 Stock Incentive Plan [Member] 2021 Stock Incentive Plan [Member] Other comprehensive (loss) income, net of tax: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Overnight Overnight [Member] Overnight Earnings per share (“EPS”) Earnings Per Share [Abstract] Repurchase agreements Interest Expense, Securities Sold under Agreements to Repurchase Net realized gains on AFS debt securities reclassified into net income Other Comprehensive Income Loss, Reclassification Adjustment For Sale Or Write Down Of Securities Included In Net Income, Before Tax Other Comprehensive Income Loss, Reclassification Adjustment For Sale Or Write Down Of Securities Included In Net Income, Before Tax Schedule of Composition of Interest Income on Debt Securities Interest Income and Interest Expense Disclosure [Table Text Block] Gross write-offs year 3 Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff Total Debt Securities, Available-for-Sale, Weighted Average Yield Treasury and Other Treasury And Other [Member] Treasury And Other Financing Receivable Allowance for Credit Losses Financing Receivable, Allowance for Credit Loss [Line Items] Repurchase of common stock pursuant to the stock repurchase program/various stock compensation plans and agreements (in shares) Treasury Stock, Shares, Acquired Award Timing Disclosures [Line Items] Measurement Frequency [Domain] Measurement Frequency [Domain] Gross repurchase agreements Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, before Offset Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, before Offset Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Loans held-for-investment (net of allowance for loan and lease losses (“ALLL”) of $835,874 and $809,773) Loans held-for-investment, net Loans held-for-investment, net Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss NET INCOME Net income Segment net income Net Income (Loss) Attributable to Parent OREO Other Real Estate Owned [Member] Represents other real estate owned. Prepositioned for Federal Reserve Bank Standing Repurchase Agreement Facility Prepositioned For Federal Reserve Bank Standing Repurchase Agreement Facility [Member] Prepositioned For Federal Reserve Bank Standing Repurchase Agreement Facility Resale And Repurchase Agreements [Abstract] RESALE AND REPURCHASE AGREEMENTS [Abstract] Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Segment Reporting Information Segment Reporting Information [Line Items] Repurchase of common stock pursuant to the stock repurchase program Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] Retained earnings Retained Earnings (Accumulated Deficit) Schedule of Stock Compensation Expense and Related Net Tax Benefit Share-Based Payment Arrangement, Cost by Plan [Table Text Block] AFS debt securities: Available for Sale Investment Securities [Abstract] Available for Sale Investment Securities [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Payout % based on operating revenue and measure of operating profit of investee Measurement Input, Payout Percentage Based On Operating Revenue And Operating Profit Of Investee [Member] Measurement Input, Payout Percentage Based On Operating Revenue And Operating Profit Of Investee Foreclosed assets Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract] Cash Flow Hedges Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Statement [Table] Statement [Table] Deferred income tax benefit Deferred Income Tax Expense (Benefit) Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] CASH FLOWS FROM FINANCING ACTIVITIES Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Total Debt Securities, Held-to-Maturity, Weighted Average Yield Amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract] Schedule of Reconciliation of the Beginning and Ending Balances of Equity Contracts Measured at Fair Value on a Recurring Basis using Significant Unobservable Inputs (Level 3) Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] All Adjustments to Compensation All Adjustments to Compensation [Member] Total Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Fair Value Amendment Flag Amendment Flag Related net tax benefits for stock compensation plans Share-Based Payment Arrangement, Expense, Tax Benefit Fair value Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Treasury stock, at cost 34,075,876 and 32,908,712 shares Treasury Stock, Common, Value Termination Date Trading Arrangement Termination Date Interest-bearing cash with banks Interest-Bearing Deposits in Banks and Other Financial Institutions Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Allowance for loan losses ALLL ALLL, beginning of period ALLL, end of period Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest Life time loss rate, period span Reasonable and Supportable Forecast Period, Life Time Loss Rate, Period Reasonable and Supportable Forecast Period, Life Time Loss Rate, Period Within One Year Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Securities Insured or Guaranteed by Government Authorities [Domain] Securities Insured or Guaranteed by Government Authorities [Domain] Securities Insured or Guaranteed by Government Authorities [Domain] Basic (in shares) Basic weighted-average number of shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic LCH London Clearing House/Chicago Mercantile Exchange [Member] London Clearing House/Chicago Mercantile Exchange Schedule of Earnings Per Share Calculations Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Gross derivative assets Derivative assets - Fair value Gross amounts recognized Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement Segment Reporting [Abstract] Segment Reporting [Abstract] Schedule of Gross Derivative Fair Values, the Balance Sheet Netting Adjustments and Net Fair Values on the Consolidated Balance Sheets, as well as the Cash and Non-Cash Collateral Offsetting Derivative Assets And Liabilities [Table Text Block] Tabular disclosure of derivatives that are subject to offsetting, including master netting arrangements. Debt Disclosure [Abstract] Net realized (gains) losses reclassified into net income Reclassification from AOCI, Current Period, Tax U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities Commercial Mortgage Backed Securities Issued By US Government Agencies And Government Sponsored Enterprise [Member] Debt securities collateralized by commercial real estate mortgage loans (mortgages), issued by US Government Agencies, such as the Government National Mortgage Association (GNMA or Ginnie Mae). Includes debt securities issued by Government Sponsored Enterprises, such as the Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB). FHLB advances borrowing capacity Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds Net realized (gains) losses reclassified into net income Reclassification from AOCI, Current Period, before Tax, Attributable to Parent Derivative liabilities Offsetting Derivative Liabilities [Abstract] Net gains on AFS debt securities Net gains on AFS debt securities Debt Securities, Available-for-Sale, Realized Gain (Loss) Net unrealized (losses) gains arising during the period OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax Deposits Deposits Liabilities, Average Amount Outstanding Deposits Liabilities, Average Amount Outstanding Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Originated Loans Receivable, Originated [Member] Loans Receivable, Originated [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Consolidated Entities [Axis] Consolidated Entities [Axis] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Net change Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Occupancy and equipment expense Occupancy, Net Less: Master netting agreements Less: Master netting agreements Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Insider Trading Arrangements [Line Items] Prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year Schedule of Additional Information related to the Affordable Housing, Tax Credit and CRA Investments, Net Schedule of Amortization of Affordable Housing and Tax Credit and CRA Investments [Table Text Block] Schedule of Amortization of Affordable Housing and Tax Credit and CRA Investments Current Accruing Loans Financial Asset, Not Past Due [Member] Allowance for Credit Losses Debt securities, available-for-sale, allowance for credit loss Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Net (increase) decrease in: Net Increase (Decrease) In [Abstract] Net Increase (Decrease) In Total liabilities Liabilities Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Modification as a % of Loan Class Financing Receivable, Excluding Accrued Interest, Modified in Period, to Total Financing Receivables, Percentage Commercial and consumer deposit-related fees Commercial And Consumer Deposit-Related Fees Commercial And Consumer Deposit-Related Fees Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Tax credit and CRA Investments Tax credit and CRA Investments, Amortization Tax credit and CRA Investments, Amortization Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Foreclosed assets Other Real Estate, Foreclosed Assets, and Repossessed Assets Less: Security Collateral Pledged Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset Foreign exchange income Foreign Exchange Income Foreign Exchange Income U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities Mortgage Backed Securities Issued By US Government Agencies And Government Sponsored Enterprise [Member] Mortgage Backed Securities Issued By US Government Agencies And Government Sponsored Enterprise [Member] Issuance of common stock pursuant to various stock compensation plans and agreements Stock Issued During Period, Value, New Issues Asset-backed securities Asset-Backed Securities [Member] Assets Purchased under Agreements to Repurchase Gross Amounts Not Offset [Abstract] Assets Purchased under Agreements to Repurchase Gross Amounts Not Offset [Abstract] Assets Purchased under Agreements to Repurchase Gross Amounts Not Offset Weighted-average contractual interest rates for FHLB advances Federal Home Loan Bank, Advances, Weighted Average Interest Rate Counterparty Name [Axis] Counterparty Name [Axis] Amortization: Investments in Tax Credit and Other Investments, Net [Abstract] Investments in Tax Credit and Other Investments, Net Proceeds from repayments and redemptions of HTM debt securities Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Fair Value Debt Securities, Available-for-Sale Held-to-maturity (“HTM”), at amortized cost (fair value of $2,453,003 and $2,479,746) HTM debt securities Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Corporate debt securities Corporate Debt Securities [Member] Other changes in loans held-for-investment, net Payments for (Proceeds from) Other Loans and Leases Collateral posted Collateral Already Posted, Aggregate Fair Value