Originated three years prior Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year With no allowance Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Restricted Stock Units Restricted Stock Units [Abstract] Restricted Stock Units Revolvers Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff Proceeds from sales Proceeds from Sale of Debt Securities, Available-for-Sale Allowance for Credit Loss Financing Receivable, Allowance for Credit Loss [Roll Forward] % of Total Class of Receivable Financing Receivable, Excluding Accrued Interest, Modified in Period, to Total Financing Receivables, Percentage Pledging Purpose [Domain] Pledging Purpose [Domain] Vested / Exercised (in dollars per share) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other than Options Exercisable Weighted Average Grant Date Fair Value This element represents share based compensation arrangement by share based payment award equity instruments other than options exercisable weighted average grant date fair value. Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Exercisable period Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances Mortgage banking - loan commitment Mortgage Banking Loan Commitment [Member] Represents information of mortgage banking - loan commitment. Award Type [Domain] Award Type [Domain] Noninterest-bearing demand Noninterest-Bearing Deposit Liabilities Fair Value as of Grant Date Award Grant Date Fair Value Investment, Name [Domain] Investment, Name [Domain] Debt and Equity Securities, FV-NI [Line Items] Debt and Equity Securities, FV-NI [Line Items] HTM, Fair Value, More than 10 years Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value Cash Payments to Acquire Businesses, Gross Schedule of purchased assets and assumed liabilities Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Current period gross charge-offs, in current fiscal year Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff Net actuarial (loss) gain on defined benefit pension plans, Tax (Expense) Benefit Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax Weighted average payment delay term (in months) Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification Taxable Interest Income, Securities, Operating, Taxable Federal Home Loan Bank advances Advance from Federal Home Loan Bank Effect of hedging relationships on interest expense: Summary of Derivative Instruments Impact on Results of Operations [Abstract] Balance at beginning of period Balance at end of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Community First Capital Trust II Community First Capital Trust Two [Member] Community First Capital Trust Two AFS, Fair Value, More than 10 years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Insider Trading Policies and Procedures [Line Items] Vested / Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Fair Value Recorded by United Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] 2028 Lessee, Operating Lease, Liability, to be Paid, Year Five Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Common and Preferred Stock Equity [Text Block] Current Loans Financial Asset, Not Past Due [Member] 200 bps adverse change Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 20 Percent Adverse Change in Discount Rate Subordinated debentures Subordinated Debt [Member] 2027 Sales-Type and Direct Financing Leases, Payment to be Received, Year Four Amortization of unrealized losses, , Net of Tax Amount OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), after Tax Schedule of weighted-average assumptions used to determine pension benefit obligations Defined Benefit Plan, Assumptions [Table Text Block] Accumulated impairment losses Goodwill, Impaired, Accumulated Impairment Loss Subsequent Event Type [Domain] Subsequent Event Type [Domain] Cash dividends on common stock Payments of Ordinary Dividends, Common Stock Derivative Instruments [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Diluted (in dollars per share) Earnings Per Share, Diluted Allowance for credit losses, HTM portfolio Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest (Gains) losses on derivative instruments realized in net income, Net of Tax Amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Receivable [Domain] Receivable [Domain] Supplemental Cash Flow Elements [Abstract] Supplemental Cash Flow Elements [Abstract] Foreclosed Properties (OREO) and Repossessed Assets Financing Receivable, Held-for-Investment, Foreclosed Asset [Policy Text Block] Net cash flow hedge activity, Net of Tax Amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Land and land improvements Land and Land Improvements [Member] Communications and equipment Communications and Information Technology Schedule of components of net periodic benefit cost and other amounts recognized in other comprehensive income Schedule of Net Benefit Costs [Table Text Block] Trading Symbol Trading Symbol Granted/Assumed (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Debt Securities AFS Debt Securities AFS Debt Securities [Member] Net unrealized gains (losses), Tax (Expense) Benefit OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax 30-90 Days Maturity 30 to 90 Days [Member] Thereafter Finite-Lived Intangible Asset, Expected Amortization, after Year Five HTM, Fair Value, Within 1 year Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Benefits paid Defined Benefit Plan, Plan Assets, Benefits Paid Four Oaks Statutory Trust I Four Oaks Statutory Trust I [Member] Represents information about Four Oaks Statutory Trust I. Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Shareholders' equity: Equity, Attributable to Parent [Abstract] Schedule of reconciliation of the beginning and ending unrecognized tax benefit related to uncertain tax positions Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] 2026 Sales-Type and Direct Financing Leases, Payment to be Received, Year Three Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Schedule of computation of basic and diluted net income per common share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Service cost Defined Benefit Plan, Service Cost Gains from other loan sales Gain (Loss) on Sales of Loans, Net Executive Category: Executive Category [Axis] Schedule of assets measured at fair value on a recurring basis using significant unobservable inputs Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] FDIC assessments and other regulatory charges Federal Deposit Insurance Corporation Premium Expense Net activity, Net of Tax Amount Other​ Comprehensive​ Income​ (Loss), ​Unrealized Gain (Loss), Transfers To Held To Maturity, After Adjustment, After Tax Other​ Comprehensive​ Income​ (Loss), ​Unrealized Gain (Loss), Transfers To Held To Maturity, After Adjustment, After Tax Restricted Stock Units, Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Vested / Exercised (in dollars per shares) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Level 1 Fair Value, Inputs, Level 1 [Member] Net defined benefit pension plan activity, Net of Tax Amount Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent Interest expense: Interest Expense [Abstract] CET1 capital Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Actual Carrying Amount Reported Value Measurement [Member] Revolvers converted to term loans Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan LIBOR London Interbank Offered Rate (LIBOR) 1 [Member] London Interbank Offered Rate (LIBOR) 1 Schedule of premises and equipment Property, Plant and Equipment [Table Text Block] Equity Components [Axis] Equity Components [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] ACL - Held-to-Maturity Securities, Available-For-Sale Securities, and Off-Balance Sheet Credit Exposures Credit Loss, Financial Instrument [Policy Text Block] Hedging Relationship [Domain] Hedging Relationship [Domain] Additional awards remaining available under plan (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Less allowance for credit losses - loans and leases Less ACL - loans ACL loans ACL - loans, Beginning Balance ACL - loans, Ending Balance Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest Granted/Assumed (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Greater than 90 days Maturity Greater than 90 Days [Member] Entity Small Business Entity Small Business 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Four Risk-based ratios: Banking Regulation, Risk-Based Information [Abstract] Local Phone Number Local Phone Number Mortgage banking - forward sales commitment Mortgage Banking Forward Sales Commitment [Member] Represents mortgage banking - forward sales commitment. Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Letters of credit Letter of Credit [Member] Notional Amount Derivative, Notional Amount Schedule of minimum amounts required for capital adequacy purposes Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Measurement Frequency [Axis] Measurement Frequency [Axis] Extension Extended Maturity [Member] Restricted stock units Restricted Stock Units Restricted Stock Units (RSUs) [Member] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Retirement Benefits [Abstract] Retirement Benefits [Abstract] FDMs defaulted within 12 months of modification Financing Receivable, Excluding Accrued Interest, Modified, Increase (Decrease) from Modification Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Schedule of long-term debt Schedule of Long-Term Debt Instruments [Table Text Block] Debt Securities, Available For Sale And Held To Maturity [Line Items] Debt Securities, Available For Sale And Held To Maturity [Line Items] Debt Securities, Available For Sale And Held To Maturity [Line Items] Servicing Rights Transfers and Servicing of Financial Assets, Policy [Policy Text Block] Goodwill and other intangible assets, net Total goodwill and other intangible assets, net Intangible Assets, Net (Including Goodwill) Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] Schedule of equity method investments Equity Method Investments [Table Text Block] Unrealized Loss, Less than 12 Months Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss VIEs Consolidation, Variable Interest Entity, Policy [Policy Text Block] Total revenue Revenues Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Residential MBS, Agency & GSE Residential Mortgage-Backed Securities, Issued By US Government Sponsored Enterprises [Member] Debt securities collateralized by residential real estate mortgage loans (mortgages), issued by US Government Sponsored Enterprises, such as Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac). Acquisitions: Noncash or Part Noncash Acquisitions [Abstract] Noncash or Part Noncash Acquisitions Short-Term Debt [Line Items] Short-Term Debt [Line Items] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Other expense Other Expenses Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Merger-related and other charges Merger-related and other charges Business Combination, Acquisition Related Costs Antidilutive securities excluded from computation (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Special Mention Special Mention [Member] Award Type [Axis] Award Type [Axis] Reclassification of unrealized losses, Tax (Expense) Benefit Other​ Comprehensive​ Income​ (Loss), ​Unrealized Gain (Loss), Transfers To Held To Maturity, Tax Other​ Comprehensive​ Income​ (Loss), ​Unrealized Gain (Loss), Transfers To Held To Maturity, Tax Granted/Assumed (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Sales and settlements Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales And Settlements Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales And Settlements Originated five or more years prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year Reconciliation of the beginning and ending unrecognized tax benefit Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Shares issued in connection with DRIP (in shares) Stock Issued During Period, Shares, Dividend Reinvestment Plan Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Hedging Designation [Axis] Hedging Designation [Axis] Goodwill [Line Items] Goodwill [Line Items] Premises and equipment, gross Property, Plant and Equipment, Gross ROU assets resulting in net increase in operating lease liability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Less discount Lessee, Operating Lease, Liability, Undiscounted Excess Amount ACL - unfunded commitments, (Release) Provision Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) Repayment of Federal Home Loan Bank advances Payments of FHLBank Borrowings, Financing Activities Employer contribution Defined Benefit Plan, Plan Assets, Contributions by Employer PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Schedule of income tax expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Shares issued through ESPP (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans 2026 Lessee, Operating Lease, Liability, to be Paid, Year Three Schedule of HTM debt securities in an unrealized loss position Unrealized Gain Loss On Held To Maturity Securities [Table Text Block] Unrealized gain loss on held to maturity securities. Total intangibles subject to amortization, net Finite-Lived Intangible Assets, Net Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Recently Adopted Standards and Accounting Standards Updates Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Deferred compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Less: accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Initial direct costs Sales Type And Direct Financing Leases, Initial Direct Costs Sales Type And Direct Financing Leases, Initial Direct Costs 2025 Lessee, Operating Lease, Liability, to be Paid, Year Two Net activity, Tax (Expense) Benefit Other​ Comprehensive​ Income​ (Loss), ​Unrealized Gain (Loss), Transfers To Held To Maturity, After Adjustment, Tax Other​ Comprehensive​ Income​ (Loss), ​Unrealized Gain (Loss), Transfers To Held To Maturity, After Adjustment, Tax U.S. Government agencies & GSEs US Government-sponsored Enterprises Debt Securities [Member] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Nonaccrual loans Nonaccrual Status [Abstract] Estimate of contractual cash flows not expected to be collected Business Combination, Acquired Receivables, Estimated Uncollectible Other financing outflows Payments For Other Financing Activities Payments For Other Financing Activities Total fair value of consideration transferred Business Combination, Consideration Transferred BOLI surrender Income Tax Reconciliation, Bank Owned Life Insurance Surrender Income Tax Reconciliation, Bank Owned Life Insurance Surrender HTM, Amortized Cost, Not due at single maturity Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, without Single Maturity Date Security Exchange Name Security Exchange Name Transfers and Servicing [Abstract] Transfers and Servicing [Abstract] Servicing liabilities Servicing Liability Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Options Stock options Employee Stock Option [Member] Derivatives and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Investments and Equity investments Investment, Policy [Policy Text Block] Total capital, Well Capitalized Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum Less: Amounts subject to master netting agreements Derivative Liability, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Net amount Derivative Liability, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election Maximum High Maximum [Member] Unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Depreciation, amortization and accretion, net Depreciation, Amortization and Accretion, Net Document Type Document Type Acquisitions Goodwill, Acquired During Period Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Tabular List, Table Tabular List [Table Text Block] Actuarial losses Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] Tax exempt Interest Income, Securities, Operating, Tax Exempt Schedule Of Servicing Asset [Line Items] Schedule Of Servicing Asset [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Total ACL, Charge-Offs Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, Writeoff Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, Writeoff Gross Unrealized Gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Less: Cash collateral received/pledged Derivative Liability, Fair Value of Collateral Equity Compensation Plans Share-Based Payment Arrangement [Text Block] Fintech funds and certain other equity method investments: Fintech And Other Funds [Member] Fintech And Other Funds Basis of Accounting Basis of Accounting, Policy [Policy Text Block] Consideration transferred Business Combination, Consideration Transferred [Abstract] Purchases Payments to Acquire Debt Securities, Available-for-Sale Cash dividends on preferred stock Payments of Ordinary Dividends, Preferred Stock and Preference Stock Business Acquisition [Axis] Business Acquisition [Axis] Schedule of loans modified under the terms of a TDR, including TDR loans that defaulted Financing Receivable, Modified [Table Text Block] Derivative [Table] Derivative [Table] Federal Home Loan Bank advances Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Federal Home Loan Bank Advances Represents amount of Federal Home Loan Bank advances recognized as of the acquisition date. Variable Rate [Axis] Variable Rate [Axis] Nonrecurring Adjustment [Domain] Nonrecurring Adjustment [Domain] Bifurcated embedded derivatives and dealer offsets Bifurcated Embedded Derivatives And Dealer Offsets [Member] Bifurcated embedded derivatives and dealer offsets. Cancelled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Title of 12(b) Security Title of 12(b) Security Other liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Fair value hedge of equipment financing loans Equipment Financing Loans [Member] Equipment Financing Loans Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss 2025 Time Deposit Maturities, Year Two Actuarial losses (gains) Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) Acquisitions Business Combination Disclosure [Text Block] Tier 1 capital, Well Capitalized Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum Income before equity in undistributed earnings of subsidiaries Income (Loss) Before Equity In Undistributed Earnings Of Subsidiaries Income (Loss) Before Equity In Undistributed Earnings Of Subsidiaries Commercial Commercial Portfolio Segment [Member] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Cash flow hedge of trust preferred securities Trust Preferred Securities Hedge [Member] Trust Preferred Securities Hedge Mortgage loans held for sale Fair value Loan, Mortgage, Held-for-Sale, Fair Value Disclosure Beginning balance, outstanding (in dollars per share) Ending balance, outstanding (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 Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Real estate valuation changes Real Estate Valuation [Member] Real Estate Valuation Outstanding principal balance Mortgage Loans Held For Sale Outstanding Principal Balance Represents mortgage loans held for sale quantified by principal amount, the principle balance held at close of period. Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Schedule of major classifications of loan and lease portfolio Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Unrealized holding gains (losses), Tax (Expense) Benefit OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Entity Tax Identification Number Entity Tax Identification Number Preferred stock dividends Dividends, Preferred Stock Total lease cost Lease, Cost Fair value hedge Fair Value Hedge Liabilities Statistical Measurement [Axis] Statistical Measurement [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Entity Interactive Data Current Entity Interactive Data Current Schedule of AFS securities sales activity Schedule of Realized Gain (Loss) [Table Text Block] Long-term Debt Long-Term Debt [Text Block] Residential Residential Portfolio Segment [Member] Performance-based restricted stock units Performance Based Restricted Stock Units [Member] Performance Based Restricted Stock Units [Member] Debt Securities, Available-for-Sale [Table] Debt Securities, Available-for-Sale [Table] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] AFS, Amortized Cost, 1 to 5 years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost Goodwill and Other Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Transfers into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3 AFS, Fair Value, Within 1 year Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Other assets Other Assets [Member] Discount on preferred shares repurchased Discount On Preferred Shares Repurchased Discount On Preferred Shares Repurchased Hedged Portfolio Layer Hedged Asset, Fair Value Hedge, Portfolio Layer Method, Hedged Layer, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Comprehensive income (loss), Tax (Expense) Benefit Comprehensive Income Loss Tax Represents amount of comprehensive income loss tax. Lending and loan servicing expense Loan Portfolio Expense Wealth management fees Investment Banking, Advisory, Brokerage, and Underwriting Fees and Commissions Measure: Measure [Axis] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Name Outstanding Recovery, Individual Name Summary of HTM debt securities in an unrealized loss position Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract] Revenue from Contracts with Customers Revenue from Contract with Customer [Policy Text Block] Intangibles write-down Intangibles Write-Down Intangibles Write-Down Supranational entities Other Debt Obligations [Member] Less: Amounts subject to master netting agreements Derivative Asset, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Current period gross charge-offs, two years prior Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff Nonrecurring Adjustment [Axis] Nonrecurring Adjustment [Axis] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Listings [Line Items] Entity Listings [Line Items] Total noninterest income Noninterest Income Schedule of summarizes the sources and expected tax consequences of future taxable deductions (revenue) Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Derivative Instruments and Hedging Activities Derivatives, Policy [Policy Text Block] 2024 Finite-Lived Intangible Asset, Expected Amortization, Year One Cash payments for lease liability Operating Lease, Payments Loan portfolio Loan Portfolio [Member] Loan Portfolio [Member] Depositary Shares, 1/1000th Of Preferred Share Depositary Shares, 1/1000th Of Preferred Share [Member] Depositary Shares, 1/1000th Of Preferred Share Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Net unrealized gains (losses), Net of Tax Amount OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Common stock outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Transfers from Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 Interest cost Defined Benefit Plan, Interest Cost Thereafter Time Deposit Maturities, after Year Five Net income recognized on AFS fair value hedges Gain (Loss) on Derivative Instruments, Net, Pretax PEO PEO [Member] HTM debt securities: Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Auditor Location Auditor Location Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Benefit Plans Retirement Benefits [Text Block] Change in plan assets, at fair value: Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Long-term debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-Term Debt Derivatives Deferred Tax Assets, Derivative Instruments Conversion of Stock, Name [Domain] Conversion of Stock, Name [Domain] Progress Progress Bank & Trust [Member] Progress Bank & Trust State taxes, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Mortgage Loans Held for Sale Mortgage Loans Held For Sale [Abstract] Mortgage Loans Held For Sale Net cash used in investing activities Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Derivatives Deferred Tax Liabilities, Derivatives Equity securities with readily determinable fair values Equity Securities, FV-NI, Current AFS, Fair Value, 1 to 5 years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value (Gains) losses on derivative instruments realized in net income, Before-tax Amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Interest rate swaps Interest Rate Swap [Member] Professional fees Professional Fees Debt Instrument [Axis] Debt Instrument [Axis] Number of AFS debt securities in unrealized loss position Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions 2028 Sales-Type and Direct Financing Leases, Payment to be Received, Year Five Actual revenue included since acquisition date Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Tier 1 leverage ratio, Well Capitalized Banking Regulation, Tier 1 Leverage Capital Ratio, Well Capitalized, Minimum Measurement Input Type [Domain] Measurement Input Type [Domain] Schedule of actual results and pro forma information Business Acquisition, Pro Forma Information, Nonrecurring Adjustments [Table Text Block] Servicing Asset at Amortized Cost [Table] Servicing Asset at Amortized Cost [Table] Total liabilities Total liabilities Liabilities Current Current Income Tax Expense (Benefit) Schedule of ROU asset and operating lease liability Schedule Of Right-Of-Use Assets And Lease Liabilities, Operating [Table Text Block] Schedule Of Right-Of-Use Assets And Lease Liabilities, Operating Fair Value, Total Debt Securities, Available-for-Sale, Unrealized Loss Position Measurement Frequency [Domain] Measurement Frequency [Domain] Premises and Equipment Property, Plant and Equipment Disclosure [Text Block] Security deposits Sales Type And Direct Financing Leases, Security Deposits Sales Type And Direct Financing Leases, Security Deposits Title of Individual [Axis] Title of Individual [Axis] Preferred stock dividend per preferred share (in dollars per share) Preferred Stock, Dividends Per Share, Declared Loans serviced for others not included in balance sheet Continuing Involvement with Derecognized Transferred Financial Assets, Amount Outstanding Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Discretionary contributions to deferred compensation plan Deferred Compensation Arrangement With Individual, Discretionary Contributions by Employer Deferred Compensation Arrangement With Individual, Discretionary Contributions by Employer Schedule of Servicing Assets at Fair Value [Table] Schedule of Servicing Assets at Fair Value [Table] Comprehensive income (loss), Before-tax Amount Comprehensive Income Loss Before Tax Represents amount of comprehensive income (loss) before tax. Cash flow hedge of subordinated debt Interest Rate Contract. Subordinated Debt [Member] Interest Rate Contract. Subordinated Debt Impact of other equity plans (in shares) Stock Issued During Period, Shares, Dividend Reinvestment Plan, Employee Benefit Plans, And Deferred Compensation Stock Issued During Period, Shares, Dividend Reinvestment Plan, Employee Benefit Plans, And Deferred Compensation Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Thereafter Sales-Type and Direct Financing Leases, Payment to be Received, after Year Five Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Subsequent Event [Line Items] Subsequent Event [Line Items] 2025 Defined Benefit Plan, Expected Future Benefit Payment, Year Two Fair Value, Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Total other comprehensive income (loss), Tax (Expense) Benefit Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Loans, including fees Interest and Fee Income, Loans and Leases 10% adverse change Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Adverse Change in Prepayment Speed Begin to expire in 2025 Net Operating Loss Carry Forwards Begin To Expire In Two Zero Two Five [Member] Net Operating Loss Carry Forwards Begin To Expire In Two Zero Two Five Consumer Consumer Portfolio Segment [Member] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equipment financing Equipment financing receivables Equipment financing loans Equipment Financing [Member] Represents information related to equipment financing. Operating Segments Segment Reporting, Policy [Policy Text Block] Service charges and fees Deposit Account [Member] Investment in other subsidiaries Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures SBA/USDA loans Loans Insured or Guaranteed by US Government Authorities [Member] Preferred Stock Preferred Stock [Member] ACL - loans, Recoveries Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery 2029 subordinated debentures Two Thousand Twenty Nine Subordinated Debentures [Member] Two Thousand Twenty Nine Subordinated Debentures Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Rate Reduction & Extension Extended Maturity and Interest Rate Reduction [Member] Supplemental disclosures of cash flow information: Supplemental Cash Flow Information [Abstract] Lease liability Deferred Tax Assets, Lease Liability Deferred Tax Assets, Lease Liability Schedule of risk category of term loans by vintage year Financing Receivable Credit Quality Indicators [Table Text Block] Current period gross charge-offs, Total ACL - loans, Charge-Offs Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Retirement Plan Name [Domain] Retirement Plan Name [Domain] Other liabilities Other Liabilities Contractually specified servicing fees earned by United on servicing rights Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset Earnings Per Common Share Earnings Per Share, Policy [Policy Text Block] Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Accounting Standards Updates and Recently Adopted Standards Accounting Standards Update and Change in Accounting Principle [Text Block] Purchases of stock (in shares) Shares repurchased (in shares) Stock Repurchased During Period, Shares Total expenses Condensed Income Statement, Total Expense Condensed Income Statement, Total Expense Equity compensation Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Amount Interest per one share of preferred stock Interest Per One Share Of Preferred Stock Interest Per One Share Of Preferred Stock Concentration risk, percentage Concentration Risk, Percentage Balance at beginning of period Balance at end of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value HTM, Fair Value, 1 to 5 years Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value Cash flow hedge Interest Rate Cash Flow Hedge Asset at Fair Value Granted/Assumed (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 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Five Asset-backed securities Asset-Backed Securities [Member] Net cash provided by operating activities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Vested / Exercised, Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Class of Stock [Axis] Class of Stock [Axis] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Purchases of debt securities available-for-sale and equity securities with readily determinable fair values Payments To Acquire Available For Sale Securities Debt And Equity Securities Payments To Acquire Available For Sale Securities Debt And Equity Securities ACL at acquisition ACL- loans, Initial ACL - PCD loans Financing Receivable, Excluding Accrued Interest, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date Amortization of prior service cost Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Dividends from other subsidiaries Dividend Income, Received From Consolidated Subsidiaries, Other Dividend Income, Received From Consolidated Subsidiaries, Other Furniture and equipment Furniture and equipment Furniture and Fixtures [Member] Debt securities held-to-maturity: Debt Securities Held To Maturity [Abstract] Debt Securities Held To Maturity [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] AFS, Amortized Cost, Within 1 year Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost Investment in Bank Investments In Bank Represents amount related to Investments In Bank. Financing Receivable, Troubled Debt Restructuring [Table] Financing Receivable, Modified [Table] Options converted Business Combination, Consideration Transferred, Converted Stock Options Business Combination, Consideration Transferred, Converted Stock Options Business Combination and Asset Acquisition [Abstract] Gross gains on sales Debt Securities, Available-for-Sale, Realized Gain Supplemental consolidated pro forma revenue Business Acquisition, Pro Forma Revenue Investment in partnerships Deferred Tax Assets, Investments Less valuation allowance Valuation allowance Deferred Tax Assets, Valuation Allowance Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Residential Mortgage And Manufactured Housing Residential Mortgage And Manufactured Housing [Member] Residential Mortgage And Manufactured Housing Advertising and public relations Marketing and Advertising Expense Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Gains (losses) on derivative instruments accounted for as cash flow hedges: Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Schedule of condensed statements of cash flows Condensed Cash Flow Statement [Table Text Block] Beginning of period End of period Fair value of retained servicing assets Servicing rights for SBA/USDA loans Servicing Asset at Fair Value, Amount Net income per common share: Earnings Per Share Reconciliation [Abstract] Retirement Plan Name [Axis] Retirement Plan Name [Axis] Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Reclassification of unrealized losses, Before-tax Amount Other​ Comprehensive​ Income​ (Loss), ​Unrealized Gain (Loss), Transfers To Held To Maturity, Before Tax Other​ Comprehensive​ Income​ (Loss), ​Unrealized Gain (Loss), Transfers To Held To Maturity, Before Tax Preferred stock issued (in shares) Preferred Stock, Shares Issued Customer derivatives and dealer offsets Customer Derivatives And Dealer Offsets [Member] Information of Customer Derivatives And Dealer Offsets. Total liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Accounting Standards Update and Change in Accounting Principle [Abstract] Investments in LIHTC: Amount of future funding commitments included in carrying amount Qualified Affordable Housing Project Investments, Commitment Entity Emerging Growth Company Entity Emerging Growth Company Amortization of unrealized losses on HTM securities transferred from AFS: Accumulated Amortization Of Gains Included In Net Income On Available For Sale Securities Transferred To Held To Maturity [Member] Represents accumulated amortization of gains included in net income on available for sale securities transferred to held to maturity. Unrealized gains on cash flow hedges Deferred Tax Liabilities, Unrealized Gain On Cash Flow Hedge Deferred Tax Liabilities, Unrealized Gain On Cash Flow Hedge Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Total DTAs Deferred Tax Assets, Gross Holding Company Parent Company [Member] BOLI earnings Income Tax Reconciliation, Bank Owned Life Insurance Earnings Income Tax Reconciliation, Bank Owned Life Insurance Earnings Reclassification of securities from available-for-sale to held-to-maturity, Net of Tax Amount Other​ Comprehensive​ Income​ (Loss), ​Reclassification ​Adjustment, ​Available For Sale To Held To Maturity, After Tax Other​ Comprehensive​ Income​ (Loss), ​Reclassification ​Adjustment, ​Available For Sale To Held To Maturity, After Tax Loans held for sale Loan, Held-for-Sale, Fair Value Disclosure Core deposit intangible Intangible assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Time Deposits Deposit Liabilities Disclosures [Text Block] 2024 Lessee, Operating Lease, Liability, to be Paid, Year One Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Title Trading Arrangement, Individual Title Net interest revenue after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Schedule of carrying amount and cumulative fair value hedging adjustments on hedged liability Schedule Of Fair Value Hedging Instruments, Carrying Value And Basis Adjustments [Table Text Block] Schedule Of Fair Value Hedging Instruments, Carrying Value And Basis Adjustments [Table Text Block] Common stock, par value $1 per share Common Stock Common Stock [Member] Par value Financing Receivable, Purchased with Credit Deterioration, Amount at Par Value Individual: Individual [Axis] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Deferred Deferred Other Tax Expense (Benefit) Decreases resulting from a lapse in the applicable statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Income Statement Location [Domain] Income Statement Location [Domain] HTM, Amortized Cost, Within 1 year Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Increase in net DTA Deferred Tax Assets, Net, Increase Due To Business Combination Deferred Tax Assets, Net, Increase Due To Business Combination Service period to receive matching contribution Defined Contribution Plan, Service Period To Qualify For Matching Contributions Defined Contribution Plan, Service Period To Qualify For Matching Contributions Schedule of tax credit and certain equity method investments Schedule Of Tax Credit and Certain Equity Method Investments [Table Text Block] Schedule Of Tax Credit and Certain Equity Method Investments Schedule of liabilities measured at fair value on a recurring basis using significant unobservable inputs Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Tax-exempt interest revenue Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount Total ACL, Beginning Balance Total ACL, Ending Balance Financing Receivable, Allowance For Credit Loss, Excluding Accrued Interest And Off-Balance Sheet Credit Loss Liability Financing Receivable, Allowance For Credit Loss, Excluding Accrued Interest And Off-Balance Sheet Credit Loss Liability Total Sales-Type and Direct Financing Leases, Payment to be Received Penalties and interest related to income taxes Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Minimum Low Minimum [Member] Weighted average common shares outstanding: Weighted average common shares: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Other Noninterest Income, Other Operating Income Premises and equipment, net Premises and equipment, net Property, Plant and Equipment, Net Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Loans held for sale Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Loans Held For Sale Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Loans Held For Sale Statement of Cash Flows [Abstract] Statement of Cash Flows Statement of Cash Flows [Abstract] Accumulated benefit obligation - beginning of year Accumulated benefit obligation - end of year Defined Benefit Plan, Benefit Obligation ASSETS Assets [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] 2026 Defined Benefit Plan, Expected Future Benefit Payment, Year Three Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] Cash paid for shares withheld to cover payroll taxes related to equity instruments Payment, Tax Withholding, Share-Based Payment Arrangement Other Deferred Tax Assets, Other Liabilities: Liabilities [Abstract] U.S. Treasuries U.S. Treasuries US Treasury Securities [Member] Net cash provided by (used in) financing activities Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Net deferred tax asset Deferred Income Tax Assets, Net Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Earnings allocated to participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Retained Earnings Retained Earnings [Member] Executive officers, certain key employees, and board of directors Executive Officers, Certain Key Employees, Board Of Directors [Member] Executive Officers, Certain Key Employees, Board Of Directors [Member] Goodwill expected to be tax deductible Business Acquisition, Goodwill, Expected Tax Deductible Amount Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Net activity, Before-tax Amount Other​ Comprehensive​ Income​ (Loss), ​Unrealized Gain (Loss), Transfers To Held To Maturity, After Adjustment, Before Tax Other​ Comprehensive​ Income​ (Loss), ​Unrealized Gain (Loss), Transfers To Held To Maturity, After Adjustment, Before Tax Basic (in dollars per share) Earnings Per Share, Basic Accounting Policies [Abstract] Accounting Policies [Abstract] Loans in bankruptcy status modified during period Financing Receivable, Excluding Accrued Interest, Loans In Bankruptcy Status Modified During Period Financing Receivable, Excluding Accrued Interest, Loans In Bankruptcy Status Modified During Period Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Cash Flow [Line Items] Cash Flow [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Beginning plan assets Plan assets - end of year Defined Benefit Plan, Plan Assets, Amount Net DTA Net DTA Deferred Tax Assets, Net Vested / Exercised during period, Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Provision for credit losses Provision for credit losses Total ACL, (Release) Provision Provision for Loan, Lease, and Other Losses Schedule of AFS debt securities in an unrealized loss position Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Community First Capital Trust III Community First Capital Trust Three [Member] Community First Capital Trust Three Total capital Banking Regulation, Total Risk-Based Capital Ratio, Actual Total ACL, Recoveries Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, Recovery Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, Recovery Benefits paid Defined Benefit Plan, Benefit Obligation, Benefits Paid Organization and Basis of Presentation Consolidation, Policy [Policy Text Block] Non-PCD loans: Business Combination, Acquired Receivables [Abstract] Other lending and loan servicing fees Other Lending And Loan Servicing Fees Other Lending And Loan Servicing Fees Document Transition Report Document Transition Report Award Timing Predetermined Award Timing Predetermined [Flag] Debt securities held-to-maturity (fair value $2,095,620 and $2,191,073, respectively) Amortized Cost Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss Interest expense Interest Expense [Member] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] (Gains) losses on derivative instruments realized in net income, Tax (Expense) Benefit Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Originated four years prior Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year Entity Public Float Entity Public Float 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] Unrealized Loss, Total Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss Proceeds from Federal Home Loan Bank advances Proceeds from FHLBank Borrowings, Financing Activities Residential mortgage Residential mortgage servicing rights Residential Mortgage [Member] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Derivative Instrument [Axis] Derivative Instrument [Axis] Long-term debt, gross Long-Term Debt, Gross Net cash flow hedge activity, Before-tax Amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax Liability Class [Axis] Liability Class [Axis] All Trading Arrangements All Trading Arrangements [Member] Substandard Substandard [Member] Schedule of the contract amount of off-balance sheet instruments Schedule of Fair Value, off-Balance-Sheet Risks [Table Text Block] All Adjustments to Compensation All Adjustments to Compensation [Member] Dividend date declared Dividends Payable, Date Declared Compensation Amount Outstanding Recovery Compensation Amount Commercial & industrial Commercial And Industrial Classification [Member] Commercial And Industrial Classification[Member] Short-term Borrowings and Federal Home Loan Bank Advances Short-Term Debt [Text Block] Derivative financial instruments Derivative financial instruments Derivative Asset Cancelled (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 True tax leases Deferred Tax Liabilities, Leasing Arrangements Deferred income tax expense Deferred Income Tax Expense (Benefit) Subsequent Event Type [Axis] Subsequent Event Type [Axis] Short-term borrowings Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Short Term Borrowings Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Short Term Borrowings Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Sales and settlements Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales And Settlements Amount of sale and settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Classifications of loans Financing Receivable, after Allowance for Credit Loss [Abstract] Schedule of effect of derivatives in hedging relationships consolidated statements of income Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block] Cancelled (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] Outstanding, Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding Cancelled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Shares issued in acquisition (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Deposits: Deposits [Abstract] Deposits [Abstract] Employer matching contribution maximum percent of employee's eligible compensation (percent) Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Schedule of carrying amount of goodwill and other intangible assets Schedule of Intangible Assets and Goodwill [Table Text Block] Operating lease liability, balance sheet line item Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Cash and cash equivalents Cash, Cash Equivalents, and Federal Funds Sold Other assets Other Assets Dilutive securities (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Current period gross charge-offs, five or more years prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff Common stock issued for acquisitions (in shares) Stock Issued During Period, Shares, Acquisitions Proceeds from sales of premises and equipment Proceeds from Sale of Property, Plant, and Equipment Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Document Period End Date Document Period End Date Originated servicing rights capitalized upon sale of loans Servicing Asset at Fair Value, Additions Schedule of nonaccrual loans by loan class Financing Receivable, Nonaccrual [Table Text Block] Adoption Date Trading Arrangement Adoption Date Accrued interest receivable Interest Receivable and Other Assets [Abstract] Reclassifications Out of AOCI Reclassification out of Accumulated Other Comprehensive Income [Member] Guaranteed portion of SBA/USDA loans SBA USDA Guaranteed Loans [Member] SBA USDA Guaranteed Loans [Member] Summary of Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Effect of dilutive securities: Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] Income tax expense Net income, Tax (Expense) Benefit Income tax expense Total income tax expense Income tax benefit Income Tax Expense (Benefit) Deferred compensation plan liability Deferred Compensation Liability, Current and Noncurrent First Miami and Progress First Miami And Progress [Member] First Miami And Progress Designated as hedging instrument Designated as Hedging Instrument [Member] Fair Value Measurements Fair Value Disclosures [Text Block] Servicing Rights Roll Forward Servicing Asset at Fair Value, Amount [Roll Forward] Number of operating segments Number of Operating Segments Shared service fees from subsidiaries Shared Service Fees From Subsidiaries Shared Service Fees From Subsidiaries Unrealized Loss, 12 Months or More Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Equity [Abstract] Equity [Abstract] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Realized losses (gains) included in net income, Net of Tax Amount Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Operating lease, weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Loans Past Due, 60 - 89 Days Financial Asset, 60 to 89 Days Past Due [Member] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Dividends on preferred stock Preferred Stock Dividends, Income Statement Impact Preferred stock redemption price (in dollars per share) Preferred Stock, Redemption Price Per Share Deposits Interest Expense, Deposits Schedule of components of net investment in leases Schedule of Components of Leveraged Lease Investments [Table Text Block] Differences between the provision for income taxes and statutory federal income tax rate Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Amortization of net actuarial losses Defined Benefit Plan, Amortization of Gain (Loss) Stated Maturity Date Debt Instruments Maturity Year This element represents debt instruments maturity year. HTM Debt Securities, Held-To-Maturity [Member] Debt Securities, Held-To-Maturity State tax credits Tax Credit Carryforward, Amount Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Unrealized Loss, Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Net cash received in acquisitions Net cash received (paid) for acquisition Payments to Acquire Businesses, Net of Cash Acquired Audit Information [Abstract] Audit Information Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] Schedule of loans by aging category and accrual status Financing Receivable, Past Due [Table Text Block] Uncertain tax positions Deferred Tax Liability Uncertain Tax Positions This element represents amount of deferred tax liability uncertain tax position. Schedule of amortized cost basis, unrealized gains and losses and fair value of HTM debt securities Debt Securities, Held-to-Maturity [Table Text Block] HTM, Amortized Cost, 5 to 10 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 Cash dividend from Bank paid to Holding Company Dividends from Bank Dividend Income, Received From Consolidated Subsidiaries, Bank Dividend Income, Received From Consolidated Subsidiaries, Bank Schedule of repurchase agreements Schedule of Repurchase Agreements [Table Text Block] Basis spread on variable rate (percent) Debt Instrument, Basis Spread on Variable Rate Nonaccrual Loans Financing Receivable, Excluding Accrued Interest, Nonaccrual Estimated useful life (in years) Property, Plant and Equipment, Useful Life Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Discount rate for net periodic benefit cost (percent) Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Deposits Deposits, Fair Value Disclosure Owner occupied commercial real estate Owner Occupied Commercial Real Estate [Member] Represents information of owner occupied commercial real estate. Amount of future funding commitments Other Commitment Total interest revenue Investment securities interest revenue Interest and Dividend Income, Operating Originated two years prior Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year Other investing inflows Proceeds From Other Investing Activities Proceeds From Other Investing Activities Common stock issuable (in shares) Common Stock Issuable, Shares Represents number of shares of common stock issuable. Interest revenue Interest Income [Member] Capital Surplus Additional Paid-in Capital [Member] Unrealized holding gains on derivatives, Net of Tax Amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Document Annual Report Document Annual Report Loans Past Due, 30 - 59 Days Financial Asset, 30 to 59 Days Past Due [Member] Impact of other equity plans Stock Issued During Period, Value, Dividend Reinvestment Plan, Employee Benefit Plans, And Deferred Compensation Stock Issued During Period, Value, Dividend Reinvestment Plan, Employee Benefit Plans, And Deferred Compensation Balance Sheet Location [Axis] Balance Sheet Location [Axis] Other liabilities Other Liabilities [Member] Cover [Abstract] Cover [Abstract] Credit concentration risk Credit Concentration Risk [Member] Subsequent Events Subsequent Events [Text Block] Loans and Leases and Allowance for Credit Losses Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Adjustment to reserve for uncertain tax positions Income Tax Reconciliation Change in Reserves for Uncertain Tax Positions This element represents amount of income tax reconciliation change in reserves for uncertain tax positions. Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] Recurring Fair Value, Recurring [Member] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Total Lessee, Operating Lease, Liability, to be Paid Schedule of supplemental cash flow information Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Current period gross charge-offs, four years prior Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff Credit Loss Status [Axis] Credit Loss Status [Axis] Merger-related costs Acquisition-related Costs [Member] Cash flow hedging Cash Flow Hedging [Member] Net change in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Risk Category [Domain] Risk Category [Domain] Risk Category [Domain] Tidelands Statutory Trust I Tidelands Statutory Trust One [Member] Represents information of Tidelands statutory trust one. Servicing Assets at Fair Value [Line Items] Servicing Assets at Fair Value [Line Items] Equity Component [Domain] Equity Component [Domain] Service charges and other related fees Noninterest Income, Other State State and Local Jurisdiction [Member] AFS, Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Rolling Maturity [Abstract] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Other Deferred Tax Liabilities, Other Net actuarial (loss) gain on defined benefit pension plans, Net of Tax Amount Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Entity Current Reporting Status Entity Current Reporting Status Concentration Risk Type [Domain] Concentration Risk Type [Domain] Preferred stock, $1 par value: 10,000,000 shares authorized; 3,662 and 4,000 shares Series I issued and outstanding, respectively; $25,000 per share liquidation preference Preferred stock carrying amount Preferred Stock, Including Additional Paid in Capital, Net of Discount Securities losses (gains), net Realized Investment Gains (Losses) Changes in fair value due to change in inputs or assumptions used in the valuation Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions Goodwill and other intangible assets Intangible Assets, Net (Including Goodwill) [Abstract] Up to 30 Days Maturity Less than 30 Days [Member] Consolidated Entities [Domain] Consolidated Entities [Domain] Total DTLs Deferred Tax Liabilities, Gross 2028 subordinated debentures Two Thousand Twenty Eight Subordinated Debentures [Member] Represents information of 2028 subordinated debentures. ACL - loans, Provision Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) 2028 Time Deposit Maturities, Year Five Trust preferred securities debt issuance Deferred Tax Liabilities, Preferred Securities, Debt Issuance Costs Deferred Tax Liabilities, Preferred Securities, Debt Issuance Costs Fair Value Estimate of Fair Value Measurement [Member] Aquesta Aquesta Financial Holdings, Inc [Member] Aquesta Financial Holdings, Inc Premises and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Scenario [Domain] Scenario [Domain] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Customer relationship intangible Customer Relationships [Member] Total loans excluding fair value hedge basis adjustment Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process Maximum remaining maturity of financial instruments having no defined maturity Maximum Remaining Maturity Of Financial Instruments Having No Defined Maturity Maximum remaining maturity of financial instruments having no defined maturity. Schedule of loans sold Schedule Of Financing Receivables Sold, Loans [Table Text Block] Schedule Of Financing Receivables Sold, Loans BOLI Bank Owned Life Insurance [Policy Text Block] Disclosure of accounting policy for information of Bank owned life insurance. Revolvers Financing Receivable, Excluding Accrued Interest, Revolving Consolidated Entities [Axis] Consolidated Entities [Axis] Fair value adjustments included in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Variable Rate [Domain] Variable Rate [Domain] Pay vs Performance Disclosure [Line Items] Entity Voluntary Filers Entity Voluntary Filers FinTrust FinTrust [Member] FinTrust Total Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing Statistical Measurement [Domain] Statistical Measurement [Domain] Total ACL, Initial ACL - PCD loans Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, Purchased With Credit Deterioration, Increase Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, Purchased With Credit Deterioration, Increase Underlying Security Market Price Change Underlying Security Market Price Change, Percent Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Stock Options Stock Options [Abstract] Stock Options Units outstanding (in shares) Beginning balance, outstanding (in shares) Ending balance, outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Amounts related to interest settlements on derivatives Increase (Decrease) in Fair Value of Interest Rate Fair Value Hedging Instruments Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] 100 bps adverse change Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Adverse Change in Discount Rate Reclassification of securities from available-for-sale to held-to-maturity, Tax (Expense) Benefit Other​ Comprehensive​ Income​ (Loss), ​Reclassification ​Adjustment, ​Available For Sale To Held To Maturity, Tax Other​ Comprehensive​ Income​ (Loss), ​Reclassification ​Adjustment, ​Available For Sale To Held To Maturity, Tax Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Fair Value, Total Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value Residential MBS, Non-agency Residential Mortgage-Backed Securities, Issued By Private Enterprises [Member] Debt securities collateralized by residential real estate mortgage loans (mortgages), issued by non-governmental sponsored enterprises. Credit Loss Status [Domain] Credit Loss Status [Domain] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Vested / Exercised, Weighted Average Remaining Term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Transfers from Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 AFS, Fair Value, Not due at single maturity Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value Actual net income included since acquisition date Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Restatement Determination Date: Restatement Determination Date [Axis] Investment, Name [Axis] Investment, Name [Axis] Schedule of gains and losses recognized in income on derivatives not designated as hedging instruments Derivatives Not Designated as Hedging Instruments [Table Text Block] Carrying amount Securities Sold under Agreements to Repurchase Corporate bonds Corporate Bonds Corporate Debt Securities [Member] Commitments and contingencies Commitments and Contingencies Future minimum lease payments Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Schedule of key characteristics, inputs, and economic assumptions used to estimate the fair value of SBA/USDA loans servicing asset and sensitivity Schedule of Fair Value Assumption, Date of Securitization or Asset-Backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Table Text Block] Tax Credit Carryforward [Table] Tax Credit Carryforward [Table] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Depositary shares, each representing 1/1000th interest in a share of Series I Non-Cumulative Preferred Stock Depositary share on Series I perpetual non-cumulative preferred stock Depositary Share On UCBI Series I Non-Cumulative Preferred Stock [Member] Depositary Share On UCBI Series I Non-Cumulative Preferred Stock Premium amortization expense excluded from assessment of hedge effectiveness Loss from Components Excluded from Assessment of Cash Flow Hedge Effectiveness Income Taxes Income Tax Disclosure [Text Block] Transfers of Financial Assets Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Sales, Policy [Policy Text Block] 2028 Defined Benefit Plan, Expected Future Benefit Payment, Year Five Deposits in banks and short-term investments Federal Funds Sold Commercial Paper and Deposits In Banks Represents amount of federal funds sold, commercial paper and deposits in banks. Operating Leases Lessee, Leases [Policy Text Block] Number of derivative contracts Number of Interest Rate Derivatives Held Premises and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Fair value adjustments included in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Bifurcated embedded derivatives Bifurcated Embedded Derivative [Member] Represents the bifurcated embedded derivatives. Repurchase of preferred stock Payments for Repurchase of Preferred Stock and Preference Stock Transaction costs Income Tax Reconciliation Tax Transaction Costs Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to transaction costs. Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Business Acquisition [Line Items] Business Acquisition [Line Items] Restricted Stock Units, 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] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Loans and leases, net Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss Total gross derivative instruments Derivative Liability, Subject to Master Netting Arrangement, before Offset BOLI Deferred Tax Liabilities, Bank Owned Life Insurance Deferred Tax Liabilities, Bank Owned Life Insurance 2030 senior debentures Two Thousand Thirty Senior Debentures [Member] Two Thousand Thirty Senior Debentures PEO Total Compensation Amount PEO Total Compensation Amount Investments in LIHTC: Investments In LIHTC [Member] Investments In LIHTC Schedule of loans held for sale at fair value under the fair value option Fair Value Option, Disclosures [Table Text Block] Interest revenue - investment securities Securities Investment [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] 2025 Sales-Type and Direct Financing Leases, Payment to be Received, Year Two Changes in carrying amount of goodwill Goodwill [Roll Forward] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Level 3 Fair Value, Inputs, Level 3 [Member] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] 2024 Defined Benefit Plan, Expected Future Benefit Payment, Year One Carrying Amount Financial Asset, Closed Portfolio, Portfolio Layer Method, Amortized Cost Beginning balance, outstanding (in shares) Ending balance, outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number FHLB Stock Federal Home Loan Bank Stock Customer derivative positions Customer Swap Position [Member] Represents the customer swap positions. Buildings and improvements Buildings and improvements Building and Building Improvements [Member] Debt securities available-for-sale Fair Value Debt securities available-for-sale Debt Securities, Available-for-Sale, Excluding Accrued Interest Interest revenue: Interest and Dividend Income, Operating [Abstract] Total income Condensed Income Statement, Income Condensed Income Statement, Income Amortization of defined benefit pension plan net periodic pension cost components, Before-tax Amount Other Comprehensive Income Loss Amortization Of Prior Service Cost And Actuarial Losses Included In Net Periodic Pension Cost For Defined Benefit Pension Plan Before Tax Amount Represents amount of other comprehensive income (loss) amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, before tax amount. Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Schedule of balance and activity in the ACL by portfolio segment Financing Receivable, Allowance for Credit Loss [Table Text Block] Long-term debt Long-Term Debt, Fair Value AFS Fair value hedge of AFS debt securities Debt Securities, Available-For-Sale [Member] Debt Securities, Available-For-Sale Reclassification of unrealized losses, Net of Tax Amount Other​ Comprehensive​ Income​ (Loss), ​Unrealized Gain (Loss), Transfers To Held To Maturity, After Tax Other​ Comprehensive​ Income​ (Loss), ​Unrealized Gain (Loss), Transfers To Held To Maturity, After Tax Net income Net income, Net of Tax Amount Net income Net Income (Loss) Derivative Contract [Domain] Derivative Contract [Domain] Loans Past Due, over 90 Days Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Company Selected Measure Name Company Selected Measure Name Operating Leases Lessee, Operating Leases [Text Block] Postage, printing and supplies Supplies and Postage Expense LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Purchases of stock Stock Repurchased During Period, Value Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Condensed Financial Statements of United Community Banks, Inc. (Holding Company Only) Condensed Financial Information of Parent Company Only Disclosure [Text Block] Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Vested / Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Unrealized holding gains on derivatives, Before-tax Amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Vesting period under plan Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Expected useful life of acquired intangible (in years) Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Extension from modification Financing Receivable, Modified, Extension From Modification Financing Receivable, Modified, Extension From Modification Other Commitments [Table] Other Commitments [Table] AFS, Fair Value Debt Securities, Available-for-Sale, Maturity, Fair Value, Rolling Maturity [Abstract] Name Measure Name Name Forgone Recovery, Individual Name Home equity Home Equity Line of Credit [Member] Goodwill Goodwill Goodwill, beginning balance Goodwill, ending balance Goodwill Commercial MBS, Agency & GSE Commercial Mortgage-Backed Securities, Issued By US Government Sponsored Enterprises [Member] Debt securities collateralized by commercial real estate mortgage loans (mortgages), issued by US Government Sponsored Enterprises, such as Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac). Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Measurement Basis [Axis] Measurement Basis [Axis] Underlying Securities Award Underlying Securities Amount CET1 capital Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual Fair Value Measurement [Domain] Fair Value Measurement [Domain] Fair Value, Less than 12 Months Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value Forecast Forecast [Member] United Community Bank Subsidiaries [Member] Common stock dividends (in dollars per share) Cash dividend declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Unrealized holding gains (losses), Net of Tax Amount OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Schedule of amortized cost and fair value of AFS and HTM securities by contractual maturity Investments Classified by Contractual Maturity Date [Table Text Block] CET1 capital, Well Capitalized Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Loan origination costs Deferred Tax Liabilities, Deferred Expense, Debt Issuance Costs Residential mortgage servicing rights Residential Mortgage Servicing Asset At Fair Value, Amount Residential Mortgage Servicing Asset At Fair Value, Amount Begin to expire in 2026 Net Operating Loss Carry Forwards Begin To Expire In Two Zero Two Six [Member] Net Operating Loss Carry Forwards Begin To Expire In Two Zero Two Six Purchase price Financing Receivable, Purchased with Credit Deterioration, Amount at Purchase Price Liabilities: Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Income Statement Location [Axis] Income Statement Location [Axis] 20% adverse change Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 20 Percent Adverse Change in Prepayment Speed Loss Contingencies Commitments and Contingencies, Policy [Policy Text Block] Derivative assets, measurement input Derivative Asset, Measurement Input Dealer offsets to bifurcated embedded derivatives Dealer Offsets To Bifurcated Embedded Derivatives [Member] Represents the dealer offsets to bifurcated embedded derivatives. Pledged securities Asset Pledged as Collateral [Member] Schedule of future minimum lease payments under operating leases Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Accumulated benefit obligation: Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Manufactured housing Manufactured Housing Loan [Member] Manufactured Housing Loan Pledged Status [Axis] Pledged Status [Axis] Schedule of carrying amount and fair values for other financial instruments that are not measured at fair value on a recurring basis Fair Value, by Balance Sheet Grouping [Table Text Block] Commercial MBS Commercial MBS Commercial Mortgage-Backed Securities [Member] Repayment of long-term debt Repayments of Other Long-Term Debt Product and Service [Domain] Product and Service [Domain] Other Performance Measure, Amount Other Performance Measure, Amount Discount rate Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate Schedule of operating lease income and expense and other supplemental information Lease, Cost [Table Text Block] Fair value hedge basis adjustment Hedge Accounting Basis Adjustment Hedged Asset, Fair Value Hedge, Portfolio Layer Method, Hedged Layer, Fair Value, Cumulative Increase (Decrease), Excluded from Amortized Cost Transfers of AFS securities to HTM securities Debt Securities, Held-To-Maturity, Excluding Accrued Interest, Transferred From Available-For-Sale, Fair Value Debt Securities, Held-To-Maturity, Excluding Accrued Interest, Transferred From Available-For-Sale, Fair Value Mortgage loan gains and other related fees Fair Value, Option, Changes in Fair Value, Gain (Loss) Investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Regulatory Matters Regulatory Capital Requirements under Banking Regulations [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Net cash flow hedge activity, Tax (Expense) Benefit Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax, Parent Total interest expense Interest expense Interest Expense Net cash paid for branch disposal Payments For Branch Disposal, Investing Activities Payments For Branch Disposal, Investing Activities Outstanding, Weighted Average Remaining Term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Loans and Leases Financing Receivable [Policy Text Block] Prepayment rate assumption Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed Trading Arrangement: Trading Arrangement [Axis] Mortgage banking derivatives Mortgage Banking Derivatives [Member] Information of Mortgage banking derivatives. Use of Estimates Use of Estimates, Policy [Policy Text Block] Add (deduct): Add Deduct [Abstract] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] AFS debt securities: Debt Securities, Available-for-Sale [Abstract] Entity File Number Entity File Number Revolvers converted to term loans Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff Cash Flow [Table] Cash Flow [Table] Disclosure of information about cash flow. Less net discount Debt Instrument, Unamortized Discount Discount rate Measurement Input, Discount Rate [Member] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Accrued interest receivable Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Assets, Accrued Interest Receivables Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Assets, Accrued Interest Receivables Cash flow hedge Interest Rate Cash Flow Hedge Liability at Fair Value Liabilities assumed Noncash or Part Noncash Acquisition, Value of Liabilities Assumed Realized (losses) gains on AFS securities: AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] 2024 Time Deposit Maturities, Year One Auditor Firm ID Auditor Firm ID Amortization of intangibles Amortization of Intangible Assets Entity Shell Company Entity Shell Company Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Restatement Determination Date Restatement Determination Date Other operating expenses Other Operating Income (Expense) [Member] Additions based on tax positions related to the current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Other liabilities Increase (Decrease) in Other Operating Liabilities Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Proceeds from sales and maturities of debt securities available-for-sale and equity securities with readily determinable fair values Proceeds from Sale and Maturity, Debt Security, Trading, and Equity Security, FV-NI, Held-for-Investment Cash and cash equivalents at beginning of year Cash and cash equivalents at end of year Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Asset Class [Axis] Asset Class [Axis] ESPP, discount rate Employee Stock Purchase Program, Discount Rate Employee Stock Purchase Program, Discount Rate Estimated residual value of leased equipment Sales Type And Direct Financing Leases, Unguaranteed Residual Asset Sales Type And Direct Financing Leases, Unguaranteed Residual Asset Variable lease cost Variable Lease, Cost Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] Computation of basic and diluted earnings per share Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Operating lease cost Operating Lease, Cost Fair Value, 12 Months or More Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Common stock issued (in shares) Common Stock, Shares, Issued Vested / Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Schedule of key characteristics, inputs, and economic assumptions used to estimate the fair value of residential mortgage loans servicing asset and sensitivity Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets [Table Text Block] Gross Unrealized Losses Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Total assets Assets, Fair Value Disclosure Unrealized Loss, Total Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Loans Held for Sale Financing Receivable, Held-for-Sale [Policy Text Block] Long-term debt Total long-term debt Long-Term Debt Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Other financing inflows Proceeds From Other Financing Activities Proceeds From Other Financing Activities Reliant Acquisition Reliant Acquisition [Member] Reliant Acquisition Schedule of estimated aggregate amortization expense for future periods Finite-Lived Intangible Assets Amortization Expense [Table Text Block] Net unrealized gains (losses), Before-tax Amount OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax Employer match of employee contributions (percent) Defined Contribution Plan, Employer Matching Contribution, Percent of Match Loan purchase accounting adjustments Deferred Tax Assets Loan Purchase Accounting Adjustment Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from loan purchase accounting adjustment. Earliest Call Date Debt Instrument Earliest Call Year This element represents debt instrument earliest call year. Weighted-average recognition period for unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Stock Conversion Description [Axis] Stock Conversion Description [Axis] Comprehensive income (loss), Net of Tax Amount Comprehensive Income (Loss), Net of Tax, Attributable to Parent Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Debt securities available-for-sale: Debt Securities Available-For-Sale And Equity Securities [Abstract] Debt Securities Available-For-Sale And Equity Securities [Abstract] CET1 capital, Minimum Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum Schedule of estimated future benefit payments expected to be paid Schedule of Expected Benefit Payments [Table Text Block] Funded status - end of year (plan assets less benefit obligations) Defined Benefit Plan, Funded (Unfunded) Status of Plan Federal Domestic Tax Authority [Member] Vested / Exercised, Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Short-term lease cost Short-Term Lease, Cost Common stock issued for acquisitions Value of common stock issued Stock Issued During Period, Value, Acquisitions Entity Address, Address Line One Entity Address, Address Line One Accrued expenses and other liabilities Accrued Liabilities and Other Liabilities Receivable Type [Axis] Receivable Type [Axis] Liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Subsequent Event [Table] Subsequent Event [Table] Dividend Restrictions Dividend Restrictions [Policy Text Block] Represents disclosure of accounting policy for dividend restrictions. Summary of sources and expected tax consequences of future taxable deductions (revenue) Components of Deferred Tax Assets and Liabilities [Abstract] Interest revenue - loans, including fees Loans Loans [Member] Options, Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Reclassification of securities from available-for-sale to held-to-maturity, Before-tax Amount Other​ Comprehensive​ Income​ (Loss), ​Reclassification ​Adjustment, ​Available For Sale To Held To Maturity, Before Tax Other​ Comprehensive​ Income​ (Loss), ​Reclassification ​Adjustment, ​Available For Sale To Held To Maturity, Before Tax Total capital Banking Regulation, Total Capital, Actual Income producing commercial real estate Income producing commercial real estate Income Producing Commercial Real Estate [Member] Property that represents income producing commercial real estate. Average total assets Regulatory Asset Subsequent event Subsequent Event [Member] Accrued penalties and interest Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Net operating loss carryforwards Operating Loss Carryforwards Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] PCD loans: Financing Receivable, Purchased with Credit Deterioration, Amount at Purchase Price [Abstract] Schedule of minimum future lease payments expected to be received from equipment financing lease contracts Sales-Type and Direct Financing Leases, Payment to be Received, Maturity [Table Text Block] Fair Value, 12 Months or More Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value Income Statement [Abstract] Statement of Operations Income Statement [Abstract] Accounting Policies [Line Items] Accounting Policies [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Components of net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] Derivative financial instruments Derivative financial instruments Derivative Liability Accrued expenses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Supplemental consolidated pro forma net income Business Acquisition, Pro Forma Net Income (Loss) HTM, Fair Value, Not due at single maturity Debt Securities, Held-to-Maturity, Maturity, without Single Maturity Date, Fair Value Tax Credit Carryforward [Line Items] Tax Credit Carryforward [Line Items] Impact of equity-based compensation awards Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Class of Stock [Line Items] Class of Stock [Line Items] Income tax expense on pretax income at statutory rates Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Trust preferred securities Trust Preferred Securities [Member] Represents information of trust preferred securities. Derivative instruments designated as cash flow hedges: Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax [Abstract] Carrying amount Equity Method Investments Purchase loans Financial Asset Acquired with Credit Deterioration [Member] Tier 1 leverage ratio, Minimum Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum RWAs Banking Regulation, Risk-Weighted Assets, Actual Minimum future lease payments expected to be received Sales-Type and Direct Financing Leases, Payment to be Received, Fiscal Year Maturity [Abstract] Financial Instrument [Axis] Financial Instrument [Axis] Defined benefit pension plan activity: Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent [Abstract] Accrued interest receivable Interest Receivable Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Vested / Exercised (in shares) Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Options Exercisable Number This element represents share based compensation arrangement by share based payment award equity instruments other than option exercisable number. Total Shareholder Return Amount Total Shareholder Return Amount Repurchase of common stock Payments for Repurchase of Common Stock Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Sublease income and rental income from owned properties under operating leases Sublease Income And Rental Income From Owned Properties Under Operating Leases Sublease Income And Rental Income From Owned Properties Under Operating Leases Significant non-cash investing and financing transactions: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Schedule of condensed balance sheets Condensed Balance Sheet [Table Text Block] Financing Receivable, Troubled Debt Restructuring [Line Items] Financing Receivable, Modified [Line Items] Net defined benefit pension plan activity, Tax (Expense) Benefit Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax Reliant Reliant Bancorp, Inc [Member] Reliant Bancorp, Inc Deferred compensation plan assets Deferred Compensation Plan Assets Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Depreciation expense Depreciation, Nonproduction 2027 Time Deposit Maturities, Year Four Proceeds from maturities and calls Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Retained earnings Retained Earnings (Accumulated Deficit) Derivative assets - mortgage Derivative Assets Mortgage [Member] Derivative Assets Mortgage Transfers into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Leases [Abstract] Leases [Abstract] Other Commitments [Line Items] Other Commitments [Line Items] DTAs: Components of Deferred Tax Assets [Abstract] Entity Address, State or Province Entity Address, State or Province Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] First Miami First Miami Bancorp, Inc [Member] First Miami Bancorp, Inc Operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Residential MBS Residential MBS Residential Mortgage-Backed Securities [Member] Renewable energy investments: Renewable Energy Investments [Member] Renewable Energy Investments Matching contributions to deferred compensation plan Deferred Compensation Arrangement with Individual, Contributions by Employer Proceeds from maturities and calls Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale ROU asset Deferred Tax Liabilities, Right Of Use Assets Deferred Tax Liabilities, Right Of Use Assets Noninterest income: Noninterest Income [Abstract] Acquired servicing rights Servicing Asset At Fair Value, Acquired Servicing Asset At Fair Value, Acquired Schedule of condensed statements of income Condensed Income Statement [Table Text Block] Securities Debt Securities, Available-for-Sale and Held-to-Maturity, after Allowance for Credit Loss Investment securities: Interest and Dividend Income, Securities, by Taxable Status [Abstract] Asset Class [Domain] Asset Class [Domain] Total gross derivative instruments Derivative Asset, Subject to Master Netting Arrangement, before Offset Tier 1 capital Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual Realized losses (gains) included in net income, Tax (Expense) Benefit Income tax benefit attributable to sales Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-Maturity Securities [Line Items] Class of Stock [Domain] Class of Stock [Domain] Assets acquired Noncash or Part Noncash Acquisition, Value of Assets Acquired Schedule of Fair Value, Off-balance Sheet Risks [Table] Schedule of Fair Value, off-Balance-Sheet Risks [Table] ACL - Loans Financing Receivable, Allowance For Credit Losses [Policy Text Block] Financing Receivable, Allowance For Credit Losses Schedule of details regarding amounts reclassified out of AOCI Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Net income available to common shareholders, basic Net income available to common shareholders, basic Net Income (Loss) Available to Common Stockholders, Basic Other Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount Options, Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Payment Delay & Extension Payment Delay And Extension [Member] Payment Delay And Extension Federal funds and other short-term investments Federal Funds Sold And Other Short-Term Investments Federal Funds Sold And Other Short-Term Investments Operating lease liability Present value of lease liability Operating Lease, Liability Unearned income Sales Type And Direct Financing Leases, Deferred Selling Profit Sales Type And Direct Financing Leases, Deferred Selling Profit Investments in LIHTC: Carrying amount Amortization Method Qualified Affordable Housing Project Investments Unrealized holding gains (losses), Before-tax Amount OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax 2027 senior debentures Two Thousand Twenty Seven Senior Debentures [Member] Represents information of 2027 senior debentures. Schedule of restricted stock units and options outstanding and activity Share-Based Payment Arrangement, Activity [Table Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Compensation expense related to 401(k) Plan Defined Contribution Plan, Cost Dealer offsets to customer derivative positions Dealer Offset To Customer Swap Position [Member] Represents the dealer offset to customer swap position. AFS, Amortized Cost, 5 to 10 years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Amortized Cost All Executive Categories All Executive Categories [Member] Deferred gains on SBA/USDA loan sales Deferred Tax Assets, Deferred Gain On SBA USDA Loan Sales Deferred Tax Assets, Deferred Gain On SBA USDA Loan Sales Other non-cash consideration Other Non-Cash Consideration Other Non-Cash Consideration Total noninterest expenses Noninterest Expense Total time deposits Time Deposits Amortization of defined benefit pension plan net periodic pension cost components: Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Series I perpetual non-cumulative preferred stock UCBI Series I Non-Cumulative Preferred Stock [Member] UCBI Series I Non-Cumulative Preferred Stock Debt Disclosure [Abstract] Debt Disclosure [Abstract] Unrealized losses on held-to-maturity securities transferred from available-for-sale: Other​ Comprehensive​ Income​ (Loss), ​Unrealized Gain (Loss), Transfers To Held To Maturity [Abstract] Other​ Comprehensive​ Income​ (Loss), ​Unrealized Gain (Loss), Transfers To Held To Maturity Deferred income tax benefit related to compensation expense for awards Share-Based Payment Arrangement, Expense, Tax Benefit Income per common share: Earnings Per Share [Abstract] Earnings Per Share [Abstract] Proceeds from issuance of common stock for dividend reinvestment and employee benefit plans Proceeds From Issuance Of Common Stock For Dividend Reinvestment and Employee Benefit Plans Represents amount of cash inflow from the amount received from the stock plan and capital contributions to an entity associated with a dividend reinvestment plan during the period. Total capital, Minimum Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum Gain (loss) recognized on hedged items Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge Common stock, $1 par value; 200,000,000 shares authorized, 119,010,319 and 106,222,758 shares issued and outstanding, respectively Common Stock, Value, Issued Allowance for credit losses, AFS portfolio Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Schedule of presentation of assets measured at fair value on nonrecurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Net defined benefit pension plan activity, Before-tax Amount Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent Senior debentures Senior Notes [Member] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] All Individuals All Individuals [Member] Pledging Purpose [Axis] Pledging Purpose [Axis] Community First Capital Trust I Community First Capital Trust One [Member] Community First Capital Trust One Entity Filer Category Entity Filer Category Unrealized Loss, 12 Months or More Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Purchases Payments to Acquire Held-to-Maturity Securities Mortgage loans held for sale Mortgages Held-For-Sale, After Nonrecurring Fair Value Adjustment, Carrying Value Mortgages Held-For-Sale, After Nonrecurring Fair Value Adjustment, Carrying Value Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Proceeds from exercise of stock options and warrants Proceeds From Exercise Of Options And Warrants Proceeds From Exercise Of Options And Warrants Statement [Table] Statement [Table] Current Fiscal Year End Date Current Fiscal Year End Date Repurchase program authorized amount Stock Repurchase Program, Authorized Amount Schedule of differences between the provision for income taxes and statutory federal income tax rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Long-term debt Long-term debt interest expense Interest Expense, Long-Term Debt Gain (loss) recognized on derivatives Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments HTM debt securities Fair Value Fair Value Debt Securities, Held-to-Maturity, Fair Value Balance at beginning of year Balance at end of year Unrecognized Tax Benefits Income Tax Authority [Axis] Income Tax Authority [Axis] Net Investment in Leases Net Investment in Lease, before Allowance for Credit Loss [Abstract] PEO Name PEO Name Originated in current fiscal year Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Pass Pass [Member] Debt securities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities Condensed Financial Information Disclosure [Abstract] Condensed Financial Information Disclosure [Abstract] Gains from other loan sales Gain (Loss) on Sale of Loans and Leases Common stock issuable under the deferred compensation plan (in shares) Common Stock Issuable Shares Under Deferred Compensation Plan This element represents common stock issuable shares under deferred compensation plan. Preferred stock authorized (in shares) Preferred Stock, Shares Authorized Schedule of changes in SBA/USDA servicing rights Schedule of Servicing Assets at Fair Value [Table Text Block] 2029-2033 Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years Schedule of changes in the carrying amounts of goodwill Schedule of Goodwill [Table Text Block] Preferred stock outstanding (in shares) Preferred Stock, Shares Outstanding Derivatives not designated as hedging instruments Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value Entity Listings [Table] Entity Listings [Table] Common stock issuable; 620,108 and 607,128 shares, respectively Common Stocks Issuable Represents amount of carrying amount of common stock issuable. Equity in undistributed earnings of subsidiaries Equity in undistributed earnings of the subsidiaries Income (Loss) from Subsidiaries, Net of Tax Nonqualified share based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost Prior service cost Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Tier 1 capital, Minimum Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum With an allowance Financing Receivable, Excluding Accrued Interest, Nonaccrual, With Allowance Amount of financing receivable on nonaccrual status with an allowance for credit loss. Nonrecurring Fair Value, Nonrecurring [Member] Derivative Asset Derivative Asset [Member] Represents Derivative Asset. Fair value adjustments included in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Net actuarial (loss) gain on defined benefit pension plans, Before-tax Amount Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax Other Other Income Payments for other investments Payments to Acquire Other Investments Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Amortization of unrealized losses, Tax (Expense) Benefit OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), Tax Interest rate Debt Instrument, Interest Rate, Stated Percentage Statement of Financial Position [Abstract] Balance Sheet Statement of Financial Position [Abstract] Corporate bonds, measurement input Debt Securities, Available-for-Sale, Measurement Input Net deferred tax asset Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Total shareholders’ equity Beginning balance Ending balance Shareholders’ equity Equity, Attributable to Parent Tax benefit related to uncertain tax positions that increases income from continuing operations Unrecognized Tax Benefits that Would Impact Effective Tax Rate Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Fair value Business Combination, Acquired Receivable, Fair Value Schedule of quantitative information about Level 3 fair value measurements for fair value on a recurring basis Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] AFS, Amortized Cost, More than 10 years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost Concentration Risk Type [Axis] Concentration Risk Type [Axis] Schedule of changes in obligations and plan assets Schedule of Defined Benefit Plans Disclosures [Table Text Block] Subsequent Events [Abstract] Subsequent Events [Abstract] Unrealized gains (losses) on available-for-sale securities: OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract] Income before income taxes Net income, Before-tax Amount Total before tax Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Weighted average payment delay term (in months) Financing Receivable, Modified, Weighted Average Payment Delay Term Increase from Modification Financing Receivable, Modified, Weighted Average Payment Delay Term Increase from Modification Current period gross charge-offs, in prior year Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff Fair Value of Financial Instruments Fair Value Measurement, Policy [Policy Text Block] Net (increase) decrease in loans Payments for (Proceeds from) Loans and Leases Not designated as hedging instrument Not Designated as Hedging Instrument [Member] Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] State and political subdivisions US States and Political Subdivisions Debt Securities [Member] Total loans sold Financing Receivable, Sale Hedging Designation [Domain] Hedging Designation [Domain] Level 2 Fair Value, Inputs, Level 2 [Member] Originated in prior year Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Preferred stock liquidation preference (in dollars per share) Preferred Stock, Liquidation Preference, Value ACL Deferred Tax Asset, Tax Deferred Expense, Reserve and Accrual, Financing Receivable, Allowance for Credit Loss Condensed Income Statement [Table] Condensed Income Statement [Table] Interest Rate (percent) Debt Instrument, Interest Rate, Effective Percentage Total identifiable net assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Loans receivable Loans Receivable [Member] Derivatives not designated as hedging instruments Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value (Decrease) increase in other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities 2027 Lessee, Operating Lease, Liability, to be Paid, Year Four Beginning balance, outstanding (in dollars per share) Ending balance, outstanding (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Stock-based compensation Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Weighted average Weighted Average Weighted Average [Member] Reclassifications Out of AOCI Disclosure of Reclassification Amount [Text Block] ACL - unfunded commitments, Beginning Balance ACL - unfunded commitments, Ending Balance Off-Balance-Sheet, Credit Loss, Liability Accounting Policies [Table] Accounting Policies [Table] Represents information of accounting policies of the organization. Begin to expire in 2023 Net Operating Loss Carry Forwards Begin To Expire In Two Zero Two Three [Member] Net Operating Loss Carry Forwards Begin To Expire In Two Zero Two Three City Area Code City Area Code Financial Asset, Aging [Domain] Financial Asset, Aging [Domain] Earnings Per Share Earnings Per Share [Text Block] Product and Service [Axis] Product and Service [Axis] Condensed Income Statements, Captions [Line Items] Condensed Income Statements, Captions [Line Items] Commitments to extend credit Commitments to Extend Credit [Member] Other Other expense Other Noninterest Expense Document Fiscal Year Focus Document Fiscal Year Focus Total deposits Deposits Stock-Based Compensation Compensation Related Costs, Policy [Policy Text Block] Unrealized holding gains on derivatives, Tax (Expense) Benefit Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax Interest-bearing deposits Interest-Bearing Deposit Liabilities AFS, Fair Value, 5 to 10 years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Fair Value Receivables [Abstract] Receivables [Abstract] Modified Retirement Plan Modified Retirement Plan [Member] Represents information about Modified Retirement Plan. Land improvements Land Improvements [Member] Exercise Price Award Exercise Price Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] HTM, Fair Value Debt Securities, Held-to-Maturity, Fair Value, Rolling Maturity [Abstract] Common stock dividends Dividends, Common Stock, Cash Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Begin to expire in 2027 Net Operating Loss Carry Forwards Begin To Expire In Two Zero Two Seven [Member] Represents information of net operating loss carryforwards begin to expire in 2027. Total liabilities Liabilities, Fair Value Disclosure Derivative assets Derivative Financial Instruments, Assets [Member] Derivative Liabilities Derivative Liability [Abstract] ROU asset, balance sheet line item Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Income taxes Income Taxes Paid, Net Overdrawn deposit accounts Deposit Liabilities Reclassified as Loans Receivable Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract] Loans held for investment Loans Held For Investment, After Nonrecurring Fair Value Adjustment, Carrying Value Loans Held For Investment, After Nonrecurring Fair Value Adjustment, Carrying Value Extended weighted average maturity Financing Receivable, Modified, Weighted Average Term Increase from Modification Servicing Assets and Liabilities Transfers and Servicing of Financial Assets [Text Block] Occupancy Occupancy, Net Total liabilities and shareholders’ equity Liabilities and Equity Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Amortization of unrealized losses, Before-tax amount OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), before Tax ROU asset Operating Lease, Right-of-Use Asset Cash and due from banks Cash and Due from Banks Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Discount rate for disclosures (percent) Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Loan Commitments and Related Financial Instruments Loan Commitments, Policy [Policy Text Block] Net income available to common shareholders, diluted Net income available to common shareholders, diluted Net Income (Loss) Available to Common Stockholders, Diluted Arrangement Duration Trading Arrangement Duration Number of banking branches Number Of Branches Represents number of branches operated by entity. Entity Address, City or Town Entity Address, City or Town Award Timing MNPI Considered Award Timing MNPI Considered [Flag] AFS, Amortized Cost, Not due at single maturity Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost Contractual maturities of time deposits Time Deposits, Fiscal Year Maturity [Abstract] Tax credit investments Effective Income Tax Rate Reconciliation, Tax Credit, Amount HTM, Amortized Cost, More than 10 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 Premises and equipments Property, Plant and Equipment, Net, by Type [Abstract] Repurchase program remaining authorization Stock Repurchase Program, Remaining Authorized Repurchase Amount Termination Date Trading Arrangement Termination Date Derivatives designated as hedging instruments Derivative Instruments in Hedges, Assets, at Fair Value Net increase (decrease) in deposits Increase (Decrease) in Deposits Fair value hedge Fair Value Hedge Assets Common stock authorized (in shares) Common Stock, Shares Authorized Construction Commercial construction Construction Loans [Member] Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] Financial Asset, Aging [Axis] Financial Asset, Aging [Axis] Short-term borrowings Total Short-Term Debt Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Summary of AFS debt securities in an unrealized loss position Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Measurement Input Type [Axis] Measurement Input Type [Axis] HTM, Amortized Cost Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity [Abstract] Gains to be reclassified from accumulated other comprehensive income into earnings over the next twelve months Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Derivative [Line Items] Derivative [Line Items] Award Timing Disclosures [Line Items] Tier 1 leverage ratio Banking Regulation, Tier 1 Leverage Capital Ratio, Actual Title of Individual [Domain] Title of Individual [Domain] Total assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Time deposits (excluding brokered time deposits) that met or exceeded FDIC insurance limit Time Deposits, at or Above FDIC Insurance Limit Capital surplus Additional Paid in Capital Loans, net Loans Receivable, Fair Value Disclosure Loans and leases held for investment Total loans Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss Minimum future lease payments receivable Sales-type and Direct Financing Leases, Lease Receivable Derivative liabilities Derivative Liability Derivative Financial Instruments, Liabilities [Member] Pledged Status [Domain] Pledged Status [Domain] Supplemental Cash Flow Information Cash Flow, Supplemental Disclosures [Text Block] Income Taxes Income Tax, Policy [Policy Text Block] 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Three Risk participations Risk Participations [Member] Represents information about risk participations. Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Insider Trading Arrangements [Line Items] HTM, Amortized Cost, 1 to 5 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 Outstanding, Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Impact of equity-based compensation awards (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Interest-bearing deposits in banks Interest-Bearing Deposits in Banks and Other Financial Institutions Entity Registrant Name Entity Registrant Name Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Award Timing Method Award Timing Method [Text Block] (Increase) decrease in other assets Other assets Increase (Decrease) in Other Operating Assets 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Two Cash paid during the period for: Payments for Operating Activities [Abstract] Adjustment to Compensation, Amount Adjustment to Compensation Amount DTLs: Components of Deferred Tax Liabilities [Abstract] Net (decrease) increase in short-term borrowings Proceeds from (Repayments of) Short-Term Debt Auditor Name Auditor Name Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Preferred stock dividend rate (percent) Preferred Stock, Dividend Rate, Percentage Less accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Schedule of assets and liabilities measured at fair value on a recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Vested / Exercised (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Dividend date of record Dividends Payable, Date of Record Repayment of long-term debt Repayments of Long-Term Debt Commercial MBS, Non-agency Commercial Mortgage-Backed Securities, Issued By Private Enterprises [Member] Debt securities collateralized by commercial real estate mortgage loans (mortgages), issued by non-governmental sponsored enterprises. Entity Central Index Key Entity Central Index Key Liabilities: Liabilities, Fair Value Disclosure [Abstract] Dividend payable date Dividends Payable, Date to be Paid Total gains and losses Derivative, Gain (Loss) on Derivative, Net Fair value adjustments included in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Compensation expense Share-Based Payment Arrangement, Expense Interest expense - long term debt Long-Term Debt [Member] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Intangibles subject to amortization, gross Finite-Lived Intangible Assets, Gross Disposals Servicing Asset at Fair Value, Disposals Loans held for investment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Income Tax Authority [Domain] Income Tax Authority [Domain] Name Trading Arrangement, Individual Name Total other comprehensive income (loss), Net of Tax Amount Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Net investment in leases Net investment in leases Net Investment in Lease, before Allowance for Credit Loss Supplementary Information on Acquired Loans Business Combination, Separately recognized Transactions, Additional Disclosures [Abstract] Schedule of accrued interest receivable Schedule Of Debt Securities Accrued Interest Receivable [Table Text Block] Schedule Of Debt Securities Accrued Interest Receivable Amortization of defined benefit pension plan net periodic pension cost components, Net of Tax Amount Other Comprehensive Income Loss Amortization Of Prior Service Cost And Actuarial Losses Include Net Periodic Pension Cost For Defined Benefit Pension Plan Net Of Tax Other comprehensive income amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, net of tax. Common Stock Issuable Common Stock Issuable [Member] Common stock issuable. Unrealized losses on AFS securities Deferred Tax Asset, Debt Securities, Available-for-Sale, Unrealized Loss Schedule of contractual maturities of time deposits, including brokered time deposits Time Deposit Maturities [Table Text Block] Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Payment Delay Payment Deferral [Member] Amendment Flag Amendment Flag Fair value hedging Fair value hedging of interest rate risk Fair Value Hedging [Member] Realized losses (gains) included in net income, Before-tax Amount Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Operating lease, weighted average discount rate (percent) Operating Lease, Weighted Average Discount Rate, Percent Less: Cash collateral received/pledged Derivative Asset, Fair Value of Collateral Deposits Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Deposits Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Deposits Interest Interest Paid, Excluding Capitalized Interest, Operating Activities Net interest revenue Interest Income (Expense), Net Assets: Assets, Fair Value Disclosure [Abstract] HTM, Fair Value, 5 to 10 years Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Fair Value Amortized Cost by Type of Modification Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount Core deposit intangible Core Deposits [Member] Outside services - electronic banking Noninterest Expense, Outside Services Electronic Banking Noninterest Expense, Outside Services Electronic Banking Financial instruments whose contract amounts represent credit risk Unused Commitments to Extend Credit Acquisition Activities Business Combinations Policy [Policy Text Block] Proceeds from other investments Proceeds from Sale of Other Investments Non-credit discount Financing Receivable, Purchased with Credit Deterioration, Discount (Premium) Current period gross charge-offs, three years prior Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff Diluted (in shares) Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Not designated as hedging instrument, economic hedge Not Designated as Hedging Instrument, Economic Hedge [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] FHLB bank, interest rate Federal Home Loan Bank, Advances, Interest Rate Derivative Assets Derivative Asset [Abstract] Interest expense- deposits Deposits [Member] Securities (losses) gains, net Net gains (losses) on sales of securities Securities (losses) gains, net Debt Securities, Available-for-Sale, Realized Gain (Loss) Pull through rate Measurement Input, Pull Through Rate [Member] Measurement Input, Pull Through Rate [Member] 2024 Sales-Type and Direct Financing Leases, Payment to be Received, Year One Noninterest expenses: Operating Expenses [Abstract] Gross losses on sales Debt Securities, Available-for-Sale, Realized Loss Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Company Selected Measure Amount Company Selected Measure Amount FinTrust and Aquesta FinTrust And Aquesta [Member] FinTrust And Aquesta Net amount Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election Federal Home Loan Bank advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Short-Term Debt Securities, Held-to-maturity [Table] Debt Securities, Held-to-Maturity [Table] Hedge Accounting Basis Adjustment Hedged Asset, Fair Value Hedge, Portfolio Layer Method, Hedged Layer, Fair Value, Cumulative Increase (Decrease) 2027 Defined Benefit Plan, Expected Future Benefit Payment, Year Four Servicing assets Deferred Tax Liabilities, Mortgage Servicing Rights Operating lease income and expense Lease, Cost [Abstract] (Increase) decrease in loans held for sale Increase (Decrease) in Loan, Held-for-Sale Total assets Assets Name Awards Close in Time to MNPI Disclosures, Individual Name Net assets acquired Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed) Regulatory Capital Requirements Under Banking Regulations [Abstract] Regulatory Capital Requirements Under Banking Regulations Salaries and employee benefits Salaries and employee benefits expense Labor and Related Expense Amortization of defined benefit pension plan net periodic pension cost components, Tax (Expense) Benefit Other Comprehensive Income Loss Amortization Of Prior Service Cost And Actuarial Losses Included In Net Periodic Pension Cost For Defined Benefit Pension Plan Tax Expense Benefit1 Represents amount of other comprehensive income (loss) amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, tax expense benefit. Overnight and Continuous Maturity Overnight [Member] Vested / Exercised (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 Non-NEOs Non-NEOs [Member] Number of HTM debt securities in unrealized loss position Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Construction in progress Construction in Progress [Member] Number of extensions Financing Receivable, Modified, Number Of Extensions Financing Receivable, Modified, Number Of Extensions Total other comprehensive income (loss), Before-tax Amount Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Schedule Of Servicing Asset [Table] Schedule Of Servicing Asset [Table] Represents the tabular information of servicing asset. Schedule of changes in residential mortgage servicing rights Servicing Asset at Amortized Cost [Table Text Block] Assets: Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Financing activities: Financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Other investing outflows Payments For Other Investing Activities Payments For Other Investing Activities Non-PEO NEO Non-PEO NEO [Member] Derivatives designated as hedging instruments Derivative Instruments in Hedges, Liabilities, at Fair Value Adjustment to Compensation: Adjustment to Compensation [Axis] Bank owned life insurance Bank Owned Life Insurance Common stock issued Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Risk Category [Axis] Risk Category [Axis] Risk Category Securities purchase accounting adjustments Deferred Tax Liabilities, Securities Purchase Accounting Adjustments Deferred Tax Liabilities, Securities Purchase Accounting Adjustments Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards Debt Instrument [Line Items] Debt Instrument [Line Items] Scenario [Axis] Scenario [Axis] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Gross contractual amounts receivable Business Combination, Acquired Receivables, Gross Contractual Amount BOLI Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Bank Owned Life Insurance Represents amount of Bank owned life insurance recognized as of the acquisition date. Schedule of Short-Term Debt [Table] Schedule of Short-Term Debt [Table] Premises and equipment Deferred Tax Liabilities, Property, Plant and Equipment Tier 1 capital Banking Regulation, Tier 1 Risk-Based Capital, Actual Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] FDIC premium expense Income Tax Reconciliation, Federal Deposit Insurance Corporation Premium Expense Income Tax Reconciliation, Federal Deposit Insurance Corporation Premium Expense Vested / Exercised, Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested Estimated aggregate amortization expense for future periods Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] 2026 Time Deposit Maturities, Year Three Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Statement [Line Items] Statement [Line Items] Mortgage loan gains and related fees Mortgage Banking [Member] Acquired intangible assets Deferred Tax Liabilities, Intangible Assets Schedule of fair value of derivative financial instruments on consolidated balance sheet Schedule of Derivative Instruments [Table Text Block] Unrealized gains (losses) associated with AFS debt securities transferred to HTM Debt Securities, Held-To-Maturity, Excluding Accrued Interest, Transferred From Available-For-Sale, Unrealized Gain (Loss) At Transfer Debt Securities, Held-To-Maturity, Excluding Accrued Interest, Transferred From Available-For-Sale, Unrealized Gain (Loss) At Transfer Short-term borrowings Interest Expense, Other Short-Term Borrowings Schedule of amortized cost basis, unrealized gains and losses, and fair value of AFS debt securities Debt Securities, Available-for-Sale [Table Text Block] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Debt Securities, Available For Sale And Held To Maturity [Table] Debt Securities, Available For Sale And Held To Maturity [Table] Debt Securities, Available For Sale And Held To Maturity [Table] Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis]