Consulting and outside services Consulting Fees Consulting fees other than legal and accounting fees. Dividends declared during the period but not paid Dividends Declared But Not Paid During the Period Dividends Declared But Not Paid During the Period Loans Held For Sale Loans Held For Sale [Member] This item represents loans held-for-sale including, but not limited to, mortgage loans and finance receivables. Unfunded contingent commitments expected to be fulfilled in 2023 Qualified Affordable Housing Project Investments, Commitment To Be Paid Year Four Qualified Affordable Housing Project Investments, Commitment To Be Paid Year Four Net additions to premises and equipment Payments for (Proceeds from) Productive Assets Net unrealized gains on available-for-sale securities Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax Mortgage-backed securities Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Amortized Cost Debt Securities Investment, Policy [Policy Text Block] Level 3 Level 3 Fair Value, Inputs, Level 3 [Member] Loans receivable, net of ACL Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Receivable, Net of ACL Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Receivable, Net of Allowance for Credit Loss Lease Expense Lease, Cost [Abstract] Credit Rating, Moody's [Axis] Credit Rating, Moody's [Axis] Lessee Leases Lessee, Leases [Policy Text Block] Total non-interest income Noninterest Income Net increase in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Debt securities, held-to-maturity Amortized Cost Amortized Cost Debt Securities, Held-to-maturity Net (decrease) increase in accrued interest payable Increase (Decrease) in Interest Payable, Net Forecasted Notional Amount Derivative Liability, Notional Amount TDR With Pre Modification Loan Balance for Which Oreo Was Received TDR With Pre Modification Loan Balance for Which Oreo Was Received TDR with pre modification loan balance, for which OREO was received. Fair Value by Asset Class [Axis] Asset Class [Axis] Acquisitions and adjustments Goodwill recognized Goodwill, Acquired During Period Schedule of Financing Receivable, Allowance for Credit Losses [Table] Financing Receivable, Allowance for Credit Loss [Table] Recorded balance Impaired Financing Receivable, Recorded Investment Accounting Guidance Adopted in 2020 New Accounting Pronouncements, Policy [Policy Text Block] Proceeds from redemption of non-marketable equity securities Proceeds from Sale of Federal Home Loan Bank Stock Employee expenses Miscellaneous Employee Expenses Miscellaneous employee expenses other than compensation and benefits. Current Fiscal Year End Date Current Fiscal Year End Date Net amortization (accretion) of purchase accounting adjustments and deferred loan fees and costs Accretion (Amortization) of Discounts and Premiums, Business Combinations The sum of the periodic adjustments of the differences between business combination asset and liability fair values and carrying values that are charged against earnings. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method. Credit Quality Indicators for Commercial Loans Financing Receivable Credit Quality Indicators [Table Text Block] Recognized amounts of identifiable assets acquired and liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract] Changes in fair value, gain (loss) Fair Value, Option, Changes in Fair Value, Gain (Loss) Amount of loss reclassified from OCI to net income Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Net interest income after credit loss expense Interest Income (Expense), after Provision for Loan Loss Derivative financial instruments Derivative [Line Items] Collateral [Axis] Collateral [Axis] S&P: A+, A, A- Standard & Poor's, A+, A or A- Ratings [Member] A+, A or A- credit ratings as defined by the external credit rating agency, Standard & Poor's. Average outstanding shares - diluted Average outstanding shares - diluted Weighted Average Number of Shares Outstanding, Diluted Entity Address, Postal Zip Code Entity Address, Postal Zip Code Stock issuances under stock incentive plans, shares Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Lessor Leases Lessor, Leases [Policy Text Block] Carrying Amount Reported Value Measurement [Member] Accounting and audit fees Accounting Fees Accounting Fees ACL on held-to-maturity debt securities Debt Securities, Held-to-maturity, Allowance for Credit Loss Reclassification adjustment for gains included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Finance Lease, Difference between lease payments and present value of lease payments Finance Lease, Liability, Undiscounted Excess Amount Premises and equipment, net Property, Plant and Equipment, Net Other Other [Member] Other Accumulated Other Comprehensive (Loss) Income AOCI Attributable to Parent [Member] Other borrowed funds Interest Expense, Other Total assets Total assets Assets Other Real Estate Real Estate [Member] Amortization of investments in variable interest entities Variable Interest Entities Investment Amortization Amount of amortization expense of investment in variable interest entities. Entity Shell Company Entity Shell Company Finance Lease, Maturing within one year Finance Lease, Liability, Payments, Due in Next Rolling Twelve Months Operating Lease, Lease liabilities Operating Lease, Total present value of lease payments Operating Lease, Liability Maximum Term Leases Will Be Considered Short-term Maximum Term Leases Will Be Considered Short-term Maximum Term Leases Will Be Considered Short-term Document Type Document Type Schedule of Marketable Securities [Table] Schedule of Marketable Securities [Table] Schedule of Marketable Securities [Table] Service charges and other fees Service Charges and Other Fees Service Charges and Other Fees on Deposit Accounts. Non-interest bearing deposits Noninterest-bearing Deposit Liabilities HTM debt securities Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items] S&P: AAA Standard & Poor's, AAA Rating [Member] Basic and Diluted Earnings Per Share Earnings Per Share Reconciliation [Abstract] 12 Months or More, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Telephone Telephone Expenses Telephone expenses Available-for-sale Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Liabilities Assumed Noncash or Part Noncash Acquisition, Value of Liabilities Assumed Schedule of Gain (Loss) on Securities [Table] Schedule of Gain (Loss) on Securities [Table] Right-of-use assets obtained in exchange for operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Finance Lease, Present Value of Lease Payments, Short-term Finance Lease, Liability, Current Supplemental Cash Flow Information Lessee Lease Cash Flow [Table Text Block] Lessee Lease Cash Flow [Table Text Block] Accrued interest payable Interest Payable Mortgage-backed securities Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Fair Value Financial Instrument [Axis] Financial Instrument [Axis] ACL on PCD loans acquired Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date Equity [Abstract] Equity [Abstract] Corporate bonds Mortgage-backed Securities, Issued by Private Enterprises [Member] Collateral Dependent Loans Collateral Dependent Loans [Line Items] Collateral Dependent Loans Total identifiable assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Preferred shares, outstanding Preferred Stock, Shares Outstanding Interest reversed on non-accrual loans Financing Receivable Nonaccrual Interest Income Reversed Amount of interest income reversed on financing receivable that went on nonaccrual status during the period. Document Quarterly Report Document Quarterly Report TDRs that Occurred During the Period, Pre-modification recorded balance Financing Receivable, Troubled Debt Restructuring, Premodification Available-for-sale, Fair Value Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] Accounting Standards Update 2016-13 Accounting Standards Update 2016-13 [Member] Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] Other real estate owned Other Real Estate, Foreclosed Assets, and Repossessed Assets Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Number of credit rating categories, highest Number of credit rating categories, highest Number of credit rating categories, highest Repurchase agreements and other borrowed funds Federal Funds Purchased and Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure Loans and Leases Receivable Disclosure [Table] Loans and Leases Receivable Disclosure [Table] Less than 12 Months, Unrealized Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Advertising and promotions Advertising Expense Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Other Other Cost and Expense, Operating Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, by Asset Class [Domain] Asset Class [Domain] Other expenses Total other expenses Other Noninterest Expense State and local governments Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Other Commitments Other Commitments [Line Items] Entity File Number Entity File Number Changes in the carrying value of goodwill Goodwill Rollforward [Text Block] Tabular disclosure of goodwill rollforward schedule. Pass Pass [Member] Repayments of long-term Federal Home Loan Bank advances Payments of FHLBank Borrowings, Financing Activities Cumulative Effect of New Accounting Principle in Period of Adoption Cumulative Effect of New Accounting Principle in Period of Adoption Document Fiscal Period Focus Document Fiscal Period Focus Financial Instruments [Domain] Financial Instruments [Domain] Other income Noninterest Income, Other Operating Income Available-for-sale Debt Securities, Available-for-sale [Abstract] Goodwill Roll Forward Goodwill [Roll Forward] Other assets Prepaid Expenses and Other Current Assets [Member] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Carrying amounts of consolidated VIEs' assets and liabilities Schedule of Variable Interest Entities [Table Text Block] Combined Approach Combined Approach Valuation Technique [Member] Combined Approach [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Due after five years through ten years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Amortized Cost Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Other Comprehensive Income Location [Domain] Other Comprehensive Income Location [Domain] Goodwill Net carrying value at beginning of period Net carrying value at end of period Goodwill Fair Value, Measurement Frequency [Domain] Measurement Frequency [Domain] Finance Lease, Operating cash flows Finance Lease, Interest Payment on Liability Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Statement [Line Items] Nature of Operations and Summary of Significant Accounting Policies Statement [Line Items] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Basic earnings per share Earnings Per Share, Basic OREO Secured by Residential Real Estate Real Estate Acquired Through Foreclosure, Secured by Residential Real Estate Real Estate Acquired Through Foreclosure, Secured by Residential Real Estate Dividends declared per share Cash dividends declared per share Common Stock, Dividends, Per Share, Declared State Bank of Arizona State Bank of Arizona [Member] State Bank of Arizona Number of years for home equity loan origination term Number of years for home equity loans origination term Number of years for home equity loans origination term Total Comprehensive Income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Securities Sold Under Agreements to Repurchase Transfers and Servicing of Financial Assets [Abstract] Interest receivable, held-to-maturity debt securities Interest receivable, held-to-maturity debt securities Carrying amount as of the balance sheet date of interest earned but not received on held-to-maturity debt securities. Net interest income and non-interest income Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Amendment Flag Amendment Flag Securities sold under agreements to repurchase Securities Sold under Agreements to Repurchase Amortized Cost Total Debt Securities, Available-for-sale, Amortized Cost Income Before Income Taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Number of common stock shares issued and outstanding Balance, beginning, shares Balance, ending, shares Common Stock, Shares, Outstanding Term loans originated in 2020 (year-to-date) Financing Receivable, Originated in Current Fiscal Year Level 1 Fair Value, Inputs, Level 1 [Member] Total interest expense Interest Expense Net purchase accounting (discounts) premiums included in loans receivable Unamortized Discounts and Premiums on Loans Amount of premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Loss on Termination Loss on Derivative Instruments, Pretax Available-for-Sale, Amortized Cost Debt Securities, Available-for-sale, Maturity, Amortized Cost, Rolling Maturity [Abstract] Transfer of loans to other real estate owned Real Estate Owned, Transfer to Real Estate Owned Fair value measurement transfers from one level to another Fair Value Measurement Transfers From One Level To Another Fair Value Measurement Transfers From One Level To Another Commercial loans Interest and Fee Income, Loans, Commercial Substandard Substandard [Member] Total financial liabilities Financial Liabilities Fair Value Disclosure Due after five years through ten years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value Local Phone Number Local Phone Number Recoveries Financing Receivable, Allowance for Credit Loss, Recovery Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Operating Lease, Total Lease Payments Lessee, Operating Lease, Liability, Payments, Due TDRs that Occurred During the Period, Number of Loans Financing Receivable, Modifications, Number of Contracts Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Held-to-maturity Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] Proceeds from loans held for sale Proceeds from Sale of Mortgage Loans Held-for-sale Quantitative Information About Level 3 Fair Value Measurements Fair Value Measurement Inputs and Valuation Techniques [Line Items] Other assets Other Assets Schedule of Other Expenses Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Due after one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost Identifiable assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] Fair Value, Option, Quantitative Disclosures Fair Value, Option, Quantitative Disclosures [Line Items] Period Past Due to Consider Loan as Non Accrual Period Past Due to Consider Loans as Non Accrual Period Past Due to Consider Loans as Non Accrual Term loans originated in 2018 Financing Receivable, Originated Two Years before Latest Fiscal Year Short-term lease cost Short-term Lease, Cost Other Comprehensive Income, Net of Tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Accrued expenses and other liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Liabilities Due within one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Entity Current Reporting Status Entity Current Reporting Status Core deposit intangible Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Derivative, Cap Interest Rate Derivative, Cap Interest Rate Total before mortgage-backed securities Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value Gain on sale and write-downs of other real estate owned, net Gains (Losses) on Sales of Other Real Estate Allowance for credit losses Financing Receivable, Allowance for Credit Loss [Roll Forward] Deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits Amount of deposits assumed at the acquisition date Net Income Net income Net income available to common stockholders, basic and diluted Net Income (Loss) Attributable to Parent Regulatory assessments and insurance General Insurance and Federal Deposit Insurance Corporation Premium Expense The expense in the period incurred with respect to protection provided by insurance entities against risks other than risks associated with production, including the amount of expense for Federal Deposit Insurance Corporation (FDIC) insurance. Proceeds from stock option exercises Proceeds from Stock Options Exercised Unrealized gains on available-for-sale securities Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, before Tax Forward commitments to sell TBA securities Forward Contracts [Member] Common Stock Common Stock [Member] Cash paid during the period for income taxes Income Taxes Paid Leases [Abstract] Leases [Abstract] Summary of ACL and loans receivable Summary of Recorded Investment in Loans and ALLL on Portfolio Class Basis [Table Text Block] Summary of recorded investment in loans and ALLL on a portfolio class basis. Net deferred origination (fees) costs included in loans receivable Unamortized Loan Origination Fees and Costs Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases. Proceeds from sales and calls of debt securities and the associated gains and losses Gain (Loss) on Securities [Table Text Block] Moody's: Not Rated Moody's, Not Rated [Member] Not rated by the external credit rating agency, Moody's. Fair Value Option, Disclosures [Table] Fair Value Option, Disclosures [Table] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Percentage of Outstanding Common Stock Acquired Business Acquisition, Percentage of Voting Interests Acquired Liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract] Operating lease cost Operating Lease, Cost Loan expenses Loan-Related Expenses Loan-related expenses. Entity Small Business Entity Small Business Due after one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value Net unrealized losses on derivatives used for cash flow hedges Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax Entity Filer Category Entity Filer Category 2020 Acquisition Current Year Acquisitions [Member] Consists of all acquisitions occurring during the current year. Tax effect Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax Printing and supplies Supplies Expense Other assets Other Noncurrent Assets [Member] Interest Rate Swaps Interest Rate Swap [Member] Total liabilities and stockholders' equity Liabilities and Equity Entity Address, City or Town Entity Address, City or Town Summary of Pre-Tax Gains or Losses Derivative Instruments, Gain (Loss) [Table Text Block] Off-balance Sheet Commitments Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability Interest on lease liabilities Finance Lease, Interest Expense Operating Lease, Present Value of Lease Payments, Long-term Operating Lease, Liability, Noncurrent 30-89 Days Past Due Nonperforming Financial Instruments 30-89 Days Past Due [Member] Category status of financial instruments in which payments are 30-89 days past due in accordance with the terms of the contract. Financial instruments include, but are not limited to, financing receivables, loans, debt, and investments. Preferred shares, authorized Preferred Stock, Shares Authorized Loans without a specific valuation allowance, Recorded balance Impaired Financing Receivable, with No Related Allowance, Recorded Investment Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Summary of impaired loans Impaired Financing Receivables [Table Text Block] Period Past Due to Consider Loan as Purchased Credit-deteriorated Loan Period Past Due to Consider Loan as Purchased Credit-deteriorated Loan Period Past Due to Consider Loan as Purchased Credit-deteriorated Loan Principles of Consolidation Consolidation, Policy [Policy Text Block] Stockholders' Equity Stockholders' Equity Attributable to Parent [Abstract] Document Fiscal Year Focus Document Fiscal Year Focus Proceeds from calls of debt securities Held-to-Maturity Securities, Gross Realized Gains (Losses), Sale Proceeds The total amount of proceeds received for the sale of securities categorized as held-to-maturity during the reporting period. The sale of held-to-maturity securities includes proceeds from maturities, prepayments and calls. Sales of available-for-sale debt securities Proceeds from Sale of Debt Securities, Available-for-sale Subordinated debentures Subordinated Debt Carrying amounts and estimated fair values of financial instruments not carried at fair value Fair Value, by Balance Sheet Grouping [Table Text Block] Loans with a specific valuation allowance, Recorded balance Impaired Financing Receivable, with Related Allowance, Recorded Investment Charge-offs Financing Receivable, Allowance for Credit Loss, Writeoff Loans Receivable, Net Financing Receivables [Text Block] PCD loans acquired Financing Receivable, Purchased with Credit Deterioration, Amount at Par Value Unrealized losses on derivatives used for cash flow hedges Amount of loss recognized in OCI Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Due within one year Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Gain on sale of loans Gain on sale of loans Gain (Loss) on Sales of Loans, Net S&P: Not Rated Standard & Poor's, Not Rated [Member] Not rated by the external credit rating agency, Standard & Poor's. Recurring Measurements Fair Value, Recurring [Member] Interest Expense Interest Expense [Abstract] Loan portfolio aging analysis Financing Receivable, Recorded Investment, Aging [Abstract] Available-for-Sale, Fair Value Debt Securities, Available-for-sale, Maturity, Fair Value, Rolling Maturity [Abstract] Collateral-dependent impaired loans, net of ALLL Collateral Dependent Impaired Loans Owned Fair Value Disclosure Collateral dependent impaired loans owned fair value disclosure. Finance Lease, Thereafter Finance Lease, Liability, Payments, Due in Rolling after Year Five Cash dividends declared Dividends, Common Stock, Cash Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table] Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Document and entity information. Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Summary of the activity in the ACL Financing Receivable, Allowance for Credit Loss [Table Text Block] Other Comprehensive Income Location [Axis] Other Comprehensive Income Location [Axis] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Performing Performing Financial Instruments [Member] Accumulated other comprehensive income Balance, beginning Balance, end Accumulated Other Comprehensive Income (Loss), Net of Tax Allowance for credit losses Allowance for credit losses on loans Balance at beginning of period Balance at end of period Total allowance for loan and lease losses Financing Receivable, Allowance for Credit Loss Other Expenses [Abstract] Other Expenses [Abstract] Due after five years through ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value Operating Lease, Operating cash flows Operating Lease, Payments Total before mortgage-backed securities Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Fair Value Term loans originated in 2016 Financing Receivable, Originated Four Years before Latest Fiscal Year Tax credits and other tax benefits recognized Affordable Housing Tax Credits and Other Tax Benefits, Amount PCD debt securities acquired Debt Securities, Available-for-sale, Purchased with Credit Deterioration, Amount at Par Value Retained Earnings Substantially Restricted Retained Earnings [Member] Qualified Affordable Housing Project Investments Qualified Affordable Housing Project Investments [Member] Qualified Affordable Housing Project Investments [Member] Interest bearing cash deposits Interest-bearing Deposits in Banks and Other Financial Institutions Amortization of debt modification costs Amortization of Debt Issuance Costs Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Financing Receivable, Credit Loss, Expense (Reversal) Financing Receivable, Credit Loss, Expense (Reversal) Liabilities Liabilities [Abstract] Document Period End Date Document Period End Date Loans with a specific valuation allowance, Unpaid principal balance Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Statement [Table] Statement [Table] Interest Rate Cap Interest Rate Cap [Member] Entity Registrant Name Entity Registrant Name Commercial mortgage-backed securities Commercial Mortgage Backed Securities [Member] Proceeds from sale of other real estate owned Proceeds from Sale of Wholly Owned Real Estate and Real Estate Acquired in Settlement of Loans Purchases of available-for-sale debt securities Payments to Acquire Debt Securities, Available-for-sale Total debt securities Debt Securities Goodwill Goodwill and Intangible Assets Disclosure [Text Block] Finance Lease, Maturing three years through four years Finance Lease, Liability, Payments, Due in Rolling Year Four Term loans originated in 2019 Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year Consolidated VIEs Variable Interest Entity, Primary Beneficiary [Member] Other Commercial Commercial Loan [Member] Net increase in securities sold under agreements to repurchase Proceeds from (Payments for) in Securities Sold under Agreements to Repurchase Fair value measurement of assets measured at fair value on a recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Other Consumer Consumer and Other Consumer Portfolio Segment [Member] Held-to-maturity Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract] Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Maximum Range Maximum [Member] Overnight and Continuous Maturity Overnight [Member] Summary of the impaired loans by portfolio class of loans Summary of Impaired Loans by Portfolio Class of Loans [Abstract] Summary of the impaired loans by portfolio class of loans. Bank-owned life insurance income, net Life Insurance, Corporate or Bank Owned, Change in Value Measurement Input Type [Domain] Measurement Input Type [Domain] ACL on PCD debt securities acquired Debt Securities, Available-for-sale, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date Schedule of Financing Receivables Past Due [Table] Financing Receivable, Past Due [Table] Receivables [Abstract] Receivables [Abstract] Cost Approach Valuation, Cost Approach [Member] Operating Lease, Maturing two years through three years Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Three Debt securities, available-for-sale Fair Value Debt Securities, Available-for-sale Cash and cash equivalents Cash, Cash Equivalents, and Federal Funds Sold Due after ten years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value Subordinated debentures Interest Expense, Junior Subordinated Debentures Corporate bonds Corporate Bond Securities [Member] AFS debt securities in an unrealized loss position with no ACL recorded Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table Text Block] Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] Summary of loans receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Retained earnings - substantially restricted Retained Earnings (Accumulated Deficit) Supplemental Disclosure of Non-Cash Investing and Financing Activities Other Noncash Investing and Financing Items [Abstract] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Entity Tax Identification Number Entity Tax Identification Number Other Commitments [Domain] Other Commitments [Domain] Revenue Recognition Revenue [Policy Text Block] Postage Postage Expense Debt Securities, Held-to-maturity, Credit Quality Indicator [Table] Debt Securities, Held-to-maturity, Credit Quality Indicator [Table] Diluted earnings per share Earnings Per Share, Diluted Net of tax amount Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Available-for-sale debt securities past due Debt Securities, Available-for-sale, Past Due Amount of investment in debt security measured at amortized cost (available-for-sale), past due. External Credit Rating, Moody's [Domain] External Credit Rating, Moody's [Domain] Operating Lease, Maturing three years through four years Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Four Lease Summary Lessee Lease Description [Table Text Block] Disclosure of information about lessee's leases. Trading Symbol Trading Symbol Debt securities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Marketable Securities, net of ACL Amount of investments in debt and equity securities, net of allowance for credit loss, including, but not limited to, held-to-maturity, trading and available-for-sale acquired at the acquisition date. Minimum Range Minimum [Member] Commercial Real Estate Commercial Real Estate [Member] Moody's: Aaa Moody's, Aaa Rating [Member] Consideration transferred, identifiable net assets acquired and resulting goodwill Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Repurchase Agreements Securities Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement Mortgage-backed securities Collateralized Mortgage Backed Securities [Member] Due after ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value Occupancy and equipment Occupancy, Net Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Residential real estate loans Interest and Fee Income, Loans, Consumer, Real Estate Balance Sheet Location [Domain] Balance Sheet Location [Domain] Term loans originated in 2017 Financing Receivable, Originated Three Years before Latest Fiscal Year Securities Sold Under Agreements to Repurchase Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items] Finance Lease, Present Value of Lease Payments, Long-term Finance Lease, Liability, Noncurrent Range [Domain] Statistical Measurement [Domain] Gross realized losses Held-to-Maturity Securities, Sold Security, Realized Loss This item represents the loss realized on the sale of held-to-maturity securities disposed of during the period. Additionally, this item may include, if not separately presented, any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt securities which are being or have been recognized in earnings during the period. Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Checking and operating expenses Deposit-Related Expenses Deposit related expenses other than interest expense. Operating Lease, Maturing within one year Lessee, Operating Lease, Liability, Payments, Due Next Rolling Twelve Months Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Table] Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Table] Off-Balance Sheet Credit Exposures Off-Balance-Sheet Credit Exposure, Policy [Policy Text Block] Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Interest expense recorded Derivative, Cost of Hedge Federal and state income tax expense Income Tax Expense (Benefit) Stock issued in connection with acquisitions, value Stock Issued During Period, Value, Acquisitions Reclassification adjustments for (gains) losses included in net income Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Loans without a specific valuation allowance, Unpaid principal balance Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Impairment losses Affordable Housing Project Investment, Write-down, Amount Tax effect Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax Individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Gross realized gains Held-to-Maturity Securities, Sold Security, Realized Gain This item represents the gain realized on the sale of held-to-maturity securities disposed of during the period. Other Commitments [Table] Other Commitments [Table] Due within one year Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost City Area Code City Area Code Other liabilities Other Liabilities Title of 12(b) Security Title of 12(b) Security Number of Days Delinquent to Charge off Loans Financing Receivable, Threshold Period Past Due, Writeoff1 Threshold period for when financing receivable is considered past due to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Net increase in accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Loans held for sale, at fair value Loans Receivable Held-for-sale, Net, Not Part of Disposal Group Investment Grade Internal Investment Grade [Member] Total assets measured at fair value on a recurring basis Total assets measured at fair value on a non-recurring basis Assets, Fair Value Disclosure Estimated Fair Value Estimate of Fair Value Measurement [Member] Quantitative information about assets measured at fair value on a non-recurring basis for which Level 3 inputs were used Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Net increase in deposits Increase (Decrease) in Deposits Loans receivable Business Combination, Acquired Receivable, Fair Value TDRs that Subsequently Defaulted, Number of Loans Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts Available-For-Sale Debt Securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] Impairment losses on receivables related to contracts with customers Capitalized Contract Cost, Accumulated Impairment Deferred tax asset Deferred Income Tax Assets, Net Securities Pledged for Repurchase Agreements Pledged Financial Instruments, Not Separately Reported, Securities for Repurchase Agreements Investments in variable interest entities Payments to Acquire Other Investments Other Comprehensive Income Other Comprehensive Income (Loss) [Member] Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Total past due and non-accrual loans Financing Receivable Recorded Investment Past Due and Non Accrual Loans Financing receivable recorded investment past due and non accrual loans. Assets Assets [Abstract] Gross realized losses Available-for-sale Securities, Gross Realized Losses Preferred shares, par value Preferred Stock, Par or Stated Value Per Share Allowance for Loan and Lease Losses and Loans Receivable Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] Number of Operating Segments Number of Operating Segments Accumulated Other Comprehensive Income [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accrued income and other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets Amount of other assets acquired at the acquisition date. Operating Lease, Weighted Average Remaining Lease Term Operating Lease, Weighted Average Remaining Lease Term Total lease expense Lease, Cost Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Activity within Accumulated Other Comprehensive Income, Net of Tax Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] TDRs that Occurred During the Period, Post-modification recorded balance Financing Receivable, Troubled Debt Restructuring, Postmodification Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Maturities of Lease Liabilities Lessee Lease Liability Maturity [Table Text Block] Tabular disclosure of undiscounted cash flows of lessee's operating and finance lease liabilities. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating and finance lease liabilities recognized in statement of financial position. Debt Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Cash consideration Cash Consideration for Outstanding Shares Cash Consideration for Outstanding Shares Amortization expense and tax credits and other tax benefits recognized for qualified affordable housing project investments Equity Method Investments [Table Text Block] Total non-interest expense Noninterest Expense Due after five years through ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Amortized Cost Collateral Dependent Loans Financing Receivable Repayment Through Operation Or Sale Of Collateral [Table Text Block] Tabular Disclosure of Financing Receivable Repayment Through Operation Or Sale Of Collateral. Credit Quality Indicators By Origination Financing Receivable, Credit Quality Indicator [Line Items] Operating Lease, Difference between lease payments and present value of lease payments Lessee, Operating Lease, Liability, Undiscounted Excess Amount Sale and refinancing of other real estate owned Real Estate Owned, Transfer from Real Estate Owned Measurement Basis [Axis] Measurement Basis [Axis] Other real estate owned Other Real Estate Owned Fair Value Disclosure Other real estate owned fair value disclosure. Due within one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost Loans and Leases Receivable Disclosure Loans and Leases Receivable Disclosure [Abstract] Core deposit intangible, net Finite-Lived Intangible Assets, Net Gain or loss on sale of investments Gain (Loss) on Investments [Abstract] CDE Certified Development Entities [Member] Certified development entities. Finance Lease, Total Lease Payments Finance Lease, Liability, Payment, Due Derivative Instrument [Axis] Derivative Instrument [Axis] Tax credit compliance period Tax Credit Compliance Period The period in which a tax credit project must stay in compliance for the investor to keep the tax credits. Non-marketable equity securities Nonmarketable Securities Equity Securities Non marketable securities, equity securities. Income Statement Location [Domain] Income Statement Location [Domain] Assets and Liabilities Assets and Liabilities, Lessee [Abstract] Other real estate owned Other Real Estate Owned, Measurement Input Range [Axis] Statistical Measurement [Axis] Supplemental Disclosure of Cash Flow Information Supplemental Cash Flow Information [Abstract] Fair value of consideration transferred Business Combination, Consideration Transferred [Abstract] Sales Comparison Approach Valuation, Market Approach [Member] Fair Value Total Debt Securities, Held-to-maturity, Fair Value Legal fees Legal Fees Operating Lease, Weighted Average Discount Rate Operating Lease, Weighted Average Discount Rate, Percent Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income (Loss) [Line Items] Revenue from Contracts with Customers Revenue from Contract with Customer, Including Assessed Tax Reclassification adjustment for losses included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax Total liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Accumulated Other Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Consolidated VIEs Variable Interest Entity [Line Items] Due after one year through five years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost Total financial assets Financial Assets Fair Value Disclosure Financial assets fair value disclosure. Home Equity Home Equity Home Equity Line of Credit [Member] Loan based on the equity of the borrower's residential property. Includes close-ended loans in which the borrower receives the loan amount upfront and revolving, open-ended loans under a line of credit. Finance Lease, Maturing one year through two years Finance Lease, Liability, Payments, Due in Rolling Year Two Loan portfolio aging analysis Financing Receivable, Past Due [Table Text Block] Gross Unrealized Losses Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss Unaudited Pro Forma Summary of the Company as if the Acquisitions had Occurred at the Beginning of the Period Business Acquisition, Pro Forma Information [Table Text Block] Transfers and Servicing [Abstract] Transfers and Servicing [Abstract] Total before mortgage-backed securities Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Amortized Cost Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Principal collected on loans Proceeds from Loan and Lease Originations and Principal Collections Held-to-Maturity Debt Securities, Held-to-maturity, Maturity [Abstract] Sublease income Sublease Income Held-to-maturity debt securities past due Debt Securities, Held-to-maturity, Past Due Non-Interest Expense Noninterest Expense [Abstract] Maturities, prepayments and calls of held-to-maturity debt securities Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities Loans with a specific valuation allowance, Average balance Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Moody's: A1, A2, A3 Moody's, A1, A2 or A3 Ratings [Member] A1, A2 or A3 credit ratings as defined by the external credit rating agency, Moody's. Finance Lease, Weighted Average Discount Rate Finance Lease, Weighted Average Discount Rate, Percent Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Past Due [Line Items] General Business Description and Basis of Presentation [Text Block] Collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Variable lease cost Variable Lease, Cost Business Assets Business Assets [Member] Business Assets Net income Business Acquisition, Pro Forma Net Income (Loss) Common stock, shares authorized Common Stock, Shares Authorized Home Equity Home Equity Portfolio Segment [Member] Portfolio segment of the company's total financing receivables related to home equity loans. Derivative, Term of Contracts Derivative, Term of Contract Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Loans and Leases Receivable Disclosure [Line Items] Loans and Leases Receivable Disclosure [Line Items] Special Mention Special Mention [Member] Entity Central Index Key Entity Central Index Key Term loans originated in 2015 and prior Financing Receivable, Originated Five or More Years before Latest Fiscal Year Fair value measurement of assets measured at fair value on a non-recurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Unfunded contingent commitments expected to be fulfilled in 2024 Qualified Affordable Housing Project Investments, Commitment To Be Paid Year Five Qualified Affordable Housing Project Investments, Commitment To Be Paid Year Five Entity Emerging Growth Company Entity Emerging Growth Company Residential Real Estate Residential Real Estate [Member] Financial liabilities Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Mergers and acquisition expenses Business Combination, Integration Related Costs Gross Unrealized Losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Operating Lease, Present Value of Lease Payments, Short-term Operating Lease, Liability, Current Stock-based compensation, net of tax benefits Share-based Payment Arrangement, Noncash Expense Basic and diluted earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Other borrowed funds Other Borrowings Derivatives and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Securities Sold Under Agreements to Repurchase Transfers and Servicing of Financial Assets [Text Block] Interest receivable, available-for-sale debt securities Interest receivable, available-for-sale debt securities Carrying amount as of the balance sheet date of interest earned but not received on available-for-sale debt securities. Derivative [Table] Derivative [Table] Proceeds from long-term Federal Home Loan Bank advances Proceeds from FHLBank Borrowings, Financing Activities Data processing Information Technology and Data Processing Financial Assets Assets, Fair Value Disclosure [Abstract] Gross realized gains Available-for-sale Securities, Gross Realized Gains Period Past Due to Consider Loan as Delinquent Period Past Due to Consider Loans as Delinquent Period Past Due to Consider Loans as Delinquent External Credit Rating, Standard & Poor's [Domain] External Credit Rating, Standard & Poor's [Domain] Summary of TDRs Financing Receivable, Troubled Debt Restructuring [Table Text Block] Number of Shares Issued for Acquisition Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Level 2 Fair Value, Inputs, Level 2 [Member] Finance Lease, Maturing two years through three years Finance Lease, Liability, Payments, Due in Rolling Year Three Financing Receivables, Period Past Due [Domain] Financial Asset, Period Past Due [Domain] Consumer and other loans Interest and Fee Income, Loans, Other Consumer Non-Recurring Measurements Non-Recurring Measurements Fair Value, Nonrecurring [Member] Doubtful/Loss Doubtful [Member] Subordinated debentures Subordinated Debt Obligations, Fair Value Disclosure Non-Accrual and 90 Days or More Past Due Nonperforming Financial Instruments Non-Accrual and 90 Days or More Past Due [Member] Category status of financial instruments in which payments are 90 days or more past due or on non-accrual in accordance with the terms of the contract. Financial instruments include, but are not limited to, financing receivables, loans, debt, and investments. Preferred shares, issued Preferred Stock, Shares Issued Held-to-Maturity, Amortized Cost Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Rolling Maturity [Abstract] U.S. government and federal agency US Government Agencies Debt Securities [Member] Measurement Input Type [Axis] Measurement Input Type [Axis] Origination of loans held for sale Payments for Origination and Purchases of Loans Held-for-sale Accruing loans 30 to 59 days past due Financial Asset, 30 to 59 Days Past Due [Member] Severity rate on available-for-sale debt securities in an unrealized loss position Available-for-sale, Securities in Unrealized Loss Positions, Severity Rate Available-for-sale, Securities in Unrealized Loss Positions, Severity Rate Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Total other comprehensive income, net of tax Other comprehensive income Other Comprehensive Income (Loss), Net of Tax Type of Adoption [Domain] Type of Adoption [Domain] Derivative, Name [Domain] Derivative Contract [Domain] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Loans Receivable Acquired, Gross Principal and Contractual Interest Due Business Combination, Acquired Receivables, Gross Contractual Amount ATM expenses ATM Expenses ATM Expenses Unpaid principal balance Impaired Financing Receivable, Unpaid Principal Balance Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Net income Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual 12 Months or More, Unrealized Loss Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Gross Unrealized Gains Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain Unfunded contingent commitments expected to be fulfilled in 2020 Qualified Affordable Housing Project Investments, Commitment To Be Paid Year One Qualified Affordable Housing Project Investments, Commitment To Be Paid Year One Amortization expense Amortization Method Qualified Affordable Housing Project Investments, Amortization Federal Home Loan Bank advances Interest Expense Federal Home Loan Bank Advance Interest expense federal home loan bank advance. Due after ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost Accrued interest receivable on loans Interest Receivable, Financing Receivable Carrying amount as of the balance sheet date of interest earned but not received on financing receivable. Accrued interest receivable Interest Receivable Unfunded contingent commitments expected to be fulfilled in 2021 Qualified Affordable Housing Project Investments, Commitment To Be Paid Year Two Qualified Affordable Housing Project Investments, Commitment To Be Paid Year Two Accruing loans past due Financing Receivable, Past Due Net of tax amount Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Specific valuation allowance Impaired Financing Receivable, Related Allowance Fair value of Company shares issued Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Investment Securities Schedule of Marketable Securities [Line Items] [Line Items] for Schedule of Marketable Securities [Table] [Table] Other Consumer Consumer Loan [Member] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Mortgage-backed securities Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Derivative Asset Derivative Asset Debt securities, held-to-maturity Held-to-Maturity Investments, Fair Value Disclosure Fair value portion of held-to-maturity investment securities. Paid-in Capital Additional Paid-in Capital [Member] Investments in Qualified Affordable Housing Projects Investments in Affordable Housing Projects [Abstract] Other Commercial Commercial Commercial Portfolio Segment [Member] Unfunded contingent commitments expected to be fulfilled thereafter Qualified Affordable Housing Project Investments, Commitment To Be Paid Thereafter Qualified Affordable Housing Project Investments, Commitment To Be Paid Thereafter Discount (premium) on PCD loans Financing Receivable, Purchased with Credit Deterioration, Discount (Premium) Individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Finance Lease, Weighted Average Remaining Lease Term Finance Lease, Weighted Average Remaining Lease Term Carrying value of equity investments in LIHTCs Amortization Method Qualified Affordable Housing Project Investments Carrying Value of Repurchase Agreements Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Table Text Block] Leases Leases Disclosure [Text Block] The entire disclosure for lessee and lessor leases. Borrowings Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Borrowings Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Borrowings. Less than 12 Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Stock issued in connection with acquisitions, shares Stock Issued During Period, Shares, Acquisitions Deferred tax liability Deferred Income Tax Liabilities, Net Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Commercial Real Estate Commercial Real Estate Portfolio Segment [Member] Net cash received from acquisitions Payments to Acquire Businesses, Net of Cash Acquired Stock-based compensation and related taxes APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition Loans receivable Total loans receivable Loans and Leases Receivable, Net of Deferred Income Gain on sale of debt securities Gain (Loss) on Sale of Investments Stock issuances under stock incentive plans, value Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Business development Business Development Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] VIE amortization and other expenses VIE Write-downs, Losses and Other Expenses Write-downs, Losses and Other Expenses related to Variable Interest Entities. Operating Lease, Maturing one year through two years Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Two Due after ten years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost Entity Address, Address Line One Entity Address, Address Line One Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Business Combinations [Abstract] Business Combinations [Abstract] Collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment Loans receivable Financing Receivable, before Allowance for Credit Loss Cash consideration Payments to Acquire Businesses, Gross Loans receivable, net of ACL Loans Receivable, Fair Value Disclosure Finance Lease, Maturing four years through five years Finance Lease, Liability, Payments, Due in Rolling Year Five Entity Address, State or Province Entity Address, State or Province Income Statement Location [Axis] Income Statement Location [Axis] Business Acquisition [Axis] Business Acquisition [Axis] Non-accrual loans with ACL Financing Receivable Nonaccrual With Allowance Amount of financing receivable on nonaccrual status with allowance for credit loss. Total before mortgage-backed securities Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost Other Expenses Other Income and Expenses [Abstract] Non-accrual loans with no ACL Financing Receivable, Nonaccrual, No Allowance Amortized cost and fair value of securities by contractual maturity Investments Classified by Contractual Maturity Date [Table Text Block] Current loans receivable Financing Receivable, Not Past Due Weighted Average Range Weighted Average [Member] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Financing Receivable, Repayment through Operation or Sale of Collateral [Table] Financing Receivable, Repayment through Operation or Sale of Collateral [Table] Disclosure of information about Financing Receivable, Repayment through Operation or Sale of Collateral. Deposits Interest Expense, Deposits Total fair value of consideration transferred Fair value of consideration transferred Business Combination, Consideration Transferred Held-to-Maturity, Fair Value Debt Securities, Held-to-maturity, Maturity, Fair Value, Rolling Maturity [Abstract] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Business Acquisition Business Acquisition [Line Items] Pro Forma Information Business Acquisition, Pro Forma Information [Abstract] Other comprehensive income (loss) before reclassification Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Finance Lease, Net ROU assets Finance Lease, Right-of-Use Asset Total, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Net increase in other borrowed funds Proceeds from (Repayments of) Other Debt Entity Interactive Data Current Entity Interactive Data Current Total, Unrealized Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Federal Home Loan Bank advances Advances from Federal Home Loan Banks Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Gain on sale of debt securities Debt Securities, Realized Gain (Loss) Common stock, par value Common Stock, Par or Stated Value Per Share Variable Interest Entities Schedule of Equity Method Investments [Line Items] Other Expenses Other Operating Income and Expense [Text Block] Tax withholding payments for stock-based compensation Payment, Tax Withholding, Share-based Payment Arrangement Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Operating Lease, Maturing four years through five years Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Five TDRs that Subsequently Defaulted, Recorded Balance Financing Receivable, Troubled Debt Restructuring, Subsequent Default Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Financing Receivable, Troubled Debt Restructuring [Table] Cash on hand and in banks Cash and Due from Banks Debit card expenses Debit Card Expense Debit card expense. Bank-owned life insurance Bank Owned Life Insurance Fair Value by Measurement Frequency [Axis] Measurement Frequency [Axis] FHLB advances Federal Home Loan Bank Borrowings, Fair Value Disclosure Earnings Per Share Earnings Per Share [Text Block] Depreciation and amortization of premises and equipment Depreciation, Nonproduction Miscellaneous loan fees and charges Miscellaneous Loan Fees and Charges Miscellaneous loan fees and charges on residential real estate, commercial, agriculture, and consumer loans. Amortization of ROU assets Finance Lease, Right-of-Use Asset, Amortization Non-accrual loans Financing Receivable, Nonaccrual Accruing loans 60 to 89 days past due Financial Asset, 60 to 89 Days Past Due [Member] Gross Unrealized Gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Net increase in other assets Increase (Decrease) in Other Operating Assets Compensation and employee benefits Labor and Related Expense Finance Lease, Lease liabilities Finance Lease, Total present value of lease payments Finance Lease, Liability Pre-Tax Gains or Losses Derivative Instruments, Gain (Loss) [Line Items] Number of components used in methodology in determining ACL Financing Receivable, Allowance for Credit Losses, Number of Components Financing Receivable, Allowance for Credit Losses, Number of Components Used For Estimate Methodology Cash dividends paid Payments of Ordinary Dividends, Common Stock State and local governments US States and Political Subdivisions Debt Securities [Member] Nature of Operations and Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Consolidated Entities [Axis] Consolidated Entities [Axis] U.S. government sponsored enterprises US Government-sponsored Enterprises Debt Securities [Member] Credit Quality Indicators for RRE and Consumer Loans Financing Receivable Credit Quality Indicators 2 [Table Text Block] Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics. Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Total liabilities Total liabilities Liabilities Financing Receivable, Change in Method, Credit Loss Expense (Reversal) Financing Receivable, Change in Method, Credit Loss Expense (Reversal) Gain on sale of loans Gain (Loss) on Sale of Loans [Member] Primary financial statement caption encompassing gain (loss) on sale of loans. Maturities, prepayments and calls of available-for-sale debt securities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Other real estate owned Foreclosed Real Estate Expense Amortized cost, gross unrealized gains and losses and fair value of debt securities Marketable Securities [Table Text Block] Other Commitments [Axis] Other Commitments [Axis] Mergers and Acquisitions Mergers, Acquisitions and Dispositions Disclosures [Text Block] S&P: AA+, AA, AA- Standard & Poor's, AA+, AA or AA- Ratings [Member] AA+, AA or AA- credit ratings as defined by the external credit rating agency, Standard & Poor's. Sales of available-for-sale debt securities Proceeds from Sales and Calls of Debt Securities, Available-for-sale Proceeds from Sales and Calls of Debt Securities, Available-for-sale Future Unfunded Contingent Commitments Other Commitments [Table Text Block] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Financing Receivables, Period Past Due [Axis] Financial Asset, Period Past Due [Axis] ACL on available-for-sale debt securities Debt Securities, Available-for-sale, Allowance for Credit Loss Interest Rate Lock Commitments Interest Rate Lock Commitments [Member] Mortgage-backed securities Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value Forecasting period used to determine ACL Financing Receivable, Allowance for Credit Losses, Forecasting Period Financing Receivable, Allowance for Credit Losses, Forecasting Period Selling costs Measurement Input, Cost to Sell [Member] Collateral [Domain] Collateral [Domain] Residential Real Estate Residential Portfolio Segment [Member] Add: dilutive restricted stock units and stock options Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Non-Interest Income Noninterest Income [Abstract] LIHTC low Income Housing Tax Credit [Member] Low-income housing tax credit. Number of Bank Divisions Number of Bank Divisions Number of Bank Divisions Credit loss expense Credit loss expense Provision for Loan, Lease, and Other Losses Operating Lease, Thereafter Lessee, Operating Lease, Liability, Payments, Due after Rolling Year Five Average outstanding shares - basic Weighted Average Number of Shares Outstanding, Basic Summary of Loans Receivable Financing Receivable, after Allowance for Credit Loss [Abstract] Operating Lease, Net right-of-use assets Operating Lease, Right-of-Use Asset Summary of debt securities Gain (Loss) on Securities [Line Items] Statement, Equity Components [Axis] Equity Components [Axis] Average balance Impaired Financing Receivable, Average Recorded Investment Available-for-Sale Available-for-sale Securities, Debt Maturities [Abstract] Derivatives Used for Cash Flow Hedges Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Loans Receivable Financing Receivable [Policy Text Block] Third-party Acquisition Related Costs Business Combination, Acquisition Related Costs Total stockholders' equity Balance, beginning Balance, ending Stockholders' Equity Attributable to Parent Core deposit intangibles amortization Amortization of core deposit intangibles Amortization of Intangible Assets Net increase (decrease) in other liabilities Increase (Decrease) in Other Operating Liabilities Loan originations Payments for Loans Originated or Acquired Payments for loans originated or acquired. ACL on off-balance sheet credit exposures Off-Balance Sheet, Credit Loss, Liability Revolving loans Financing Receivable, Revolving Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase Interest Income Interest and Dividend Income, Operating [Abstract] Net amortization of debt securities Accretion (Amortization) of Discounts and Premiums, Investments Residential mortgage-backed securities Residential Mortgage Backed Securities [Member] Interest bearing deposits Interest-bearing Deposit Liabilities Fair Value of Assets and Liabilities Fair Value Disclosures [Text Block] Securities sold under agreements to repurchase Interest Expense, Securities Sold under Agreements to Repurchase Due after one year through five years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value Credit Quality Indictors for HTM Debt Securities Debt Securities, Held-to-maturity, Credit Quality Indicator [Table Text Block] Fair Value of Assets Acquired Noncash or Part Noncash Acquisition, Value of Assets Acquired Total identifiable net assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Components of Lease Expense Lease, Cost [Table Text Block] Consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process Mortgage Loans in Process of Foreclosure, Amount Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Period of Finance Receivable Modifications Due to COVID-19 Period of Finance Receivable Modifications Due to COVID-19 Period of Finance Receivable Modifications Due to COVID-19 Cash paid during the period for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Fair value of common stock shares issued Stock Issued Total interest income Interest and Dividend Income, Operating Adjustments to comparables Measurement Input, Comparability Adjustment [Member] Preferred shares, $0.01 par value per share, 1,000,000 shares authorized, none issued or outstanding Preferred Stock, Value, Issued Unfunded contingent commitments Qualified Affordable Housing Project Investments, Commitment Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Security Exchange Name Security Exchange Name Collateral-dependent impaired loans, net of ALLL Impaired Loans, Measurement Input Value of input used to measure impaired loans. Restricted stock units and stock options excluded from the diluted average outstanding share calculation Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Finance Lease, ROU assets Finance Lease Right Of Use Asset, Gross Amount before accumulated amortization. Collateral Dependent Loans Collateral Dependent Loans Amortized Cost Basis of Financing Receivable, Repayment through Operation or Sale of Collateral Accruing loans 90 days or more past due Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Term deposits Deposits, Fair Value Disclosure Paid-in capital Additional Paid in Capital, Common Stock Moody's: Aa1, Aa2, Aa3 Moody's, Aa1, Aa2 or Aa3 Ratings [Member] Aa1, Aa2 or Aa3 credit rating as defined by the external credit rating agency, Moody's. Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Loans held for sale, at fair value Loans Held-for-sale, Fair Value Disclosure Equity Component [Domain] Equity Component [Domain] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Document Transition Report Document Transition Report Net Interest Income Interest Income (Expense), Net Common stock, $0.01 par value per share, 117,187,500 shares authorized Common Stock, Value, Outstanding Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Finance Lease, Financing cash flows Finance Lease, Principal Payments Loans receivable, net Loans receivable, net Loans and Leases Receivable, Net Amount Consolidated Entities [Domain] Consolidated Entities [Domain] Accumulated impairment charge Goodwill, Impaired, Accumulated Impairment Loss Finance Lease Liabilities, Rolling Maturity Finance Lease, Liability, Payment, Due, Rolling Maturity [Abstract] Tax credit period Tax Credit Period The period in which an investor receives tax credits from a tax credit project. Investment securities Interest and Dividend Income, Securities, Operating Purchases of non-marketable equity securities Payments to Acquire Federal Home Loan Bank Stock Net decrease in short-term Federal Home Loan Bank advances Proceeds from (Repayments of) Short-term Debt, Maturing in Three Months or Less Unfunded contingent commitments expected to be fulfilled in 2022 Qualified Affordable Housing Project Investments, Commitment To Be Paid Year Three Qualified Affordable Housing Project Investments, Commitment To Be Paid Year Three Loans without a specific valuation allowance, Average balance Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Core Deposit Intangible, Weighted Average Useful Life Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Operating Lease Liabilities, Rolling Maturity Lessee, Operating Lease, Liability, Payment, Due, Rolling Maturity [Abstract] Troubled Debt Restructurings Financing Receivable, Troubled Debt Restructuring [Line Items] Financial assets Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Net interest income and non-interest income Business Acquisition, Pro Forma Revenue Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Credit Rating, Standard & Poor's [Axis] Credit Rating, Standard & Poor's [Axis] Income Statement [Abstract] Income Statement [Abstract] Variable Interest Entities Variable Interest Entity Disclosure [Text Block] Fair value of derivative Derivative Asset, Fair Value, Gross Asset Balance Sheet Location [Axis] Balance Sheet Location [Axis] Interest Rate Contracts Interest Rate Contract [Member] Finance Lease, Accumulated depreciation Finance Lease Right of Use Asset, Accumulated Amortization Accumulated amortization of finance lease right-of-use asset.