Derivatives Deferred Tax Assets, Derivative Instruments Business Acquisition [Axis] Business Acquisition [Axis] Restricted Stock Units Restricted Stock Units [Abstract] Restricted Stock Units Net deferred tax asset Deferred Income Tax Assets, Net 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. Long-term debt, gross Long-Term Debt, Gross Schedule of AFS debt securities in an unrealized loss position Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Mortgage banking - loan commitment Mortgage Banking Loan Commitment [Member] Represents information of mortgage banking - loan commitment. Fair Value, 12 Months or More Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value 2023 Time Deposit Maturities, Year One Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Preferred stock outstanding (in shares) Preferred Stock, Shares Outstanding Total capital Banking Regulation, Total Capital, Actual Debt Instrument [Axis] Debt Instrument [Axis] Premises and equipment, gross Property, Plant and Equipment, Gross Cash dividends on common stock Payments of Ordinary Dividends, Common Stock Schedule of changes in obligations and plan assets Schedule of Defined Benefit Plans Disclosures [Table Text Block] Effect of hedging relationships on interest expense: Summary of Derivative Instruments Impact on Results of Operations [Abstract] Up to 30 Days Maturity Less than 30 Days [Member] 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 Capital surplus Additional Paid in Capital Total loans sold Financing Receivable, Sale and Reclassification to Held-for-Sale Fair Value Measurement [Domain] Fair Value Measurement [Domain] Financial Instruments [Domain] Financial Instruments [Domain] Basis spread on variable rate (percent) Debt Instrument, Basis Spread on Variable Rate 2026 Time Deposit Maturities, Year Four Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Vested / Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Goodwill and other intangible assets Intangible Assets, Net (Including Goodwill) [Abstract] Net DTA Net DTA Deferred Tax Assets, Net Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Operating lease, weighted average discount rate (percent) Operating Lease, Weighted Average Discount Rate, Percent Interest Rate (percent) Debt Instrument, Interest Rate, Stated Percentage Stock-Based Compensation Compensation Related Costs, Policy [Policy Text Block] Fair value hedge of brokered CDs Brokered Certificate Of Deposit [Member] Represents the brokered certificate of deposits. Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Common stock issued for acquisitions (in shares) Stock Issued During Period, Shares, Acquisitions AFS, Fair Value, Within 1 year Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Preferred stock dividends Dividends, Preferred Stock Measurement Input Type [Domain] Measurement Input Type [Domain] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Schedule of condensed statements of income Condensed Income Statement [Table Text Block] Antidilutive securities excluded from computation (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Realized (gains) losses included in net income, Net of Tax Amount Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Future minimum lease payments Lessee, Operating Lease, Liability, to be Paid [Abstract] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Equity Component [Domain] Equity Component [Domain] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Nonrecurring Fair Value, Nonrecurring [Member] Net income per common share: Earnings Per Share Reconciliation [Abstract] Discount rate Measurement Input, Discount Rate [Member] Interest expense Interest Expense [Member] Not designated as hedging instrument, economic hedge Not Designated as Hedging Instrument, Economic Hedge [Member] Investment, Name [Domain] Investment, Name [Domain] Additions based on tax positions related to the current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Fair Value of Financial Instruments Fair Value Measurement, Policy [Policy Text Block] 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] Total capital, Minimum Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum Hedging Designation [Domain] Hedging Designation [Domain] Originated five or more years prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] Beginning plan assets Plan assets - end of year Defined Benefit Plan, Plan Assets, Amount Supplemental disclosures of cash flow information: Supplemental Cash Flow Information [Abstract] Cancelled (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Schedule of nonaccrual loans by loan class Financing Receivable, Nonaccrual [Table Text Block] Liabilities assumed Noncash or Part Noncash Acquisition, Value of Liabilities Assumed Four Oaks Statutory Trust I Four Oaks Statutory Trust I [Member] Represents information about Four Oaks Statutory Trust I. Entity Address, State or Province Entity Address, State or Province Transfers into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Pledged Status [Axis] Pledged Status [Axis] FHLB bank, interest rate Federal Home Loan Bank, Advances, Interest Rate Other comprehensive (loss) income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Outstanding, Weighted Average Remaining Term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term AFS, Amortized Cost, Within 1 year Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost Beginning of period End of period Fair value of retained servicing assets Servicing rights for SBA/USDA loans Servicing Asset at Fair Value, Amount Award Type [Axis] Award Type [Axis] Actuarial gains Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) 2027 Defined Benefit Plan, Expected Future Benefit Payment, Year Five 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 Mortgage loans held for sale Fair value Mortgages Held-for-sale, Fair Value Disclosure Expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Entity Listings [Line Items] Entity Listings [Line Items] Operating lease income and expense Lease, Cost [Abstract] 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 2025 Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Three Schedule of the contract amount of off-balance sheet instruments Schedule of Fair Value, off-Balance-Sheet Risks [Table Text Block] Other Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount Less allowance for credit losses - loans and leases Less ACL - loans ACL - loans, Beginning Balance ACL - loans, Ending Balance Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest Loans Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Premises and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Discount rate Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate Originated three years prior Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year Commitments to extend credit Commitments to Extend Credit [Member] Unrealized losses on AFS securities Deferred Tax Asset, Debt Securities, Available-for-Sale, Unrealized Loss Mortgage banking - forward sales commitment Mortgage Banking Forward Sales Commitment [Member] Represents mortgage banking - forward sales commitment. Assets acquired Noncash or Part Noncash Acquisition, Value of Assets Acquired Total liabilities Liabilities Operating lease, weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Schedule of estimated future benefit payments expected to be paid Schedule of Expected Benefit Payments [Table Text Block] Schedule of details regarding amounts reclassified out of AOCI Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Vested / Exercised, Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] 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 Total deposits Deposits Deposits Revenue from Contracts with Customers Revenue from Contract with Customer [Policy Text Block] Realized gains (losses) on AFS securities: AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Accounting Standards Update and Change in Accounting Principle [Abstract] Document Type Document Type Options, Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] SOFR Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Estimated useful life (in years) Property, Plant and Equipment, Useful Life Long-term Debt Long-Term Debt [Text Block] Securities (losses) gains, net Net gains (losses) on sales of securities Securities gains (losses), net Debt Securities, Available-for-Sale, Realized Gain (Loss) Components of net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Gross Unrealized Losses Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Assets: Assets, Fair Value Disclosure [Abstract] 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] Loans Held for Sale Financing Receivable, Held-for-sale [Policy Text Block] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Net (decrease) increase in deposits Increase (Decrease) in Deposits 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 Deferred income tax expense Deferred Income Tax Expense (Benefit) Estimated loss rate Measurement Input, Estimated Loss Rate [Member] Measurement Input, Estimated Loss Rate Loans Past Due, over 90 Days Financial Asset, Equal to or Greater than 90 Days Past Due [Member] 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). Tax-exempt interest revenue Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount HTM, Amortized Cost, Within 1 year Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Acquisitions: Noncash or Part Noncash Acquisitions [Abstract] Noncash or Part Noncash Acquisitions Unrealized holding gains (losses) on derivatives, Before-tax Amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Fair value adjustments included in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Retirement Plan Name [Domain] Retirement Plan Name [Domain] 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 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 Credit Loss Status [Axis] Credit Loss Status [Axis] Total identifiable net assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Income Statement Location [Axis] Income Statement Location [Axis] Employer contribution Defined Benefit Plan, Plan Assets, Contributions by Employer Defined benefit pension plan activity: Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent [Abstract] Unrealized holding (losses) gains, Before-tax Amount OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax Total other comprehensive (loss) income, Tax (Expense) Benefit Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Merger-related costs Acquisition-related Costs [Member] Intangible asset acquired Finite-Lived Intangible Assets Acquired Net cash (used in) provided by financing activities Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Accounting Policies [Abstract] Accounting Policies [Abstract] Minimum future lease payments expected to be received Sales-Type and Direct Financing Leases, Lease Receivable, Payments to be Received, Fiscal Year Maturity [Abstract] Variable lease cost Variable Lease, Cost Schedule of balance and activity in the ACL by portfolio segment Financing Receivable, Allowance for Credit Loss [Table Text Block] Less: Cash collateral received/pledged Derivative Liability, Fair Value of Collateral Shareholders' equity: Stockholders' Equity Attributable to Parent [Abstract] ACL - loans, Charge-Offs Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] 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. Thereafter Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, after Year Five Interest cost Defined Benefit Plan, Interest Cost Issue Date Debt Instrument Issue Year This element represents debt instrument issue year. Preferred stock dividend per preferred share (in dollars per share) Preferred Stock, Dividends Per Share, Declared Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract] Unrealized holding (losses) gains, Tax (Expense) Benefit OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax Schedule of income tax expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Residential MBS Residential Mortgage-Backed Securities [Member] Initial direct costs Sales Type And Direct Financing Leases, Initial Direct Costs Sales Type And Direct Financing Leases, Initial Direct Costs Weighted-average recognition period for unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Unrealized Loss, Total Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Vested / Exercised, Weighted Average Remaining Term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 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 Cash consideration Cash Payments to Acquire Businesses, Gross 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] Equity investments, outflows Payments to Acquire Other Investments Derivative Contract [Domain] Derivative Contract [Domain] Entity Registrant Name Entity Registrant Name Other financing outflows Payments For Other Financing Activities Payments For Other Financing Activities 2026 Defined Benefit Plan, Expected Future Benefit Payment, Year Four BOLI surrender Income Tax Reconciliation, Bank Owned Life Insurance Surrender Income Tax Reconciliation, Bank Owned Life Insurance Surrender Subsequent Events Subsequent Events [Text Block] HELOC Home Equity Line of Credit [Member] Loans and leases, net Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss Benefits paid Defined Benefit Plan, Benefit Obligation, Benefits Paid Fair value adjustments included in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Benefit Plans Retirement Benefits [Text Block] Long-term debt Long-term debt interest expense Interest Expense, Long-Term Debt AFS, Fair Value, Not due at single maturity Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value Leases [Abstract] Leases [Abstract] Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards Organization and Basis of Presentation Consolidation, Policy [Policy Text Block] Asset Class [Domain] Asset Class [Domain] Minimum Low Minimum [Member] Entity Emerging Growth Company Entity Emerging Growth Company Occupancy Occupancy, Net Purchase loans Financial Asset Acquired with Credit Deterioration [Member] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Unrealized holding gains (losses) on derivatives, Net of Tax Amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax 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 Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Investment, Name [Axis] Investment, Name [Axis] Number of HTM debt securities in unrealized loss position Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Fair Value Measurements Fair Value Disclosures [Text Block] Summary of AFS debt securities in an unrealized loss position Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Trading Symbol Trading Symbol Entity File Number Entity File Number Other liabilities Other Liabilities [Member] 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Four Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Title of Individual [Axis] Title of Individual [Axis] Entity Listings [Table] Entity Listings [Table] Derivative Instruments and Hedging Activities Derivatives, Policy [Policy Text Block] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Bifurcated embedded derivatives and dealer offsets Bifurcated Embedded Derivatives And Dealer Offsets [Member] Bifurcated embedded derivatives and dealer offsets. Derivatives not designated as hedging instruments Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value Use of Estimates Use of Estimates, Policy [Policy Text Block] Acquisitions Business Combination Disclosure [Text Block] Federal Home Loan Bank advances Advance from Federal Home Loan Bank ACL - loans, Provision Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) Balance at beginning of period Balance at end of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value 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 Prime Rate Prime Rate [Member] Concentration risk, percentage Concentration Risk, Percentage Advertising and public relations Marketing and Advertising Expense Payable due Business Combination, Consideration Transferred, Liabilities Incurred Cash flow hedge of trust preferred securities Trust Preferred Securities Hedge [Member] Trust Preferred Securities Hedge Revolvers converted to term loans Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan Supplemental consolidated pro forma net income Business Acquisition, Pro Forma Net Income (Loss) Derivative Liabilities Derivative Liability [Abstract] Income Taxes Income Tax Disclosure [Text Block] Outstanding, Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding 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. Debt Securities, Trading, and Equity Securities, FV-NI [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Basic (in dollars per share) Earnings Per Share, Basic Losses on derivative instruments realized in net income, Tax (Expense) Benefit Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Par value Financing Receivable, Purchased with Credit Deterioration, Amount at Par Value Net cash flow hedge activity, Before-tax Amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss Total capital, Well Capitalized Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum Deferred compensation plan liability Deferred Compensation Liability, Current and Noncurrent Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Performance-based restricted stock units Performance Based Restricted Stock Units [Member] Performance Based Restricted Stock Units [Member] Net actuarial gain (loss) on defined benefit pension plans, Before-tax Amount Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Condensed Income Statement [Table] Condensed Income Statement [Table] Derivative Instruments [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Entity Interactive Data Current Entity Interactive Data Current Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Comprehensive (loss) income, Tax (Expense) Benefit Comprehensive Income Loss Tax Represents amount of comprehensive income loss tax. Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Total other comprehensive (loss) income, Net of Tax Amount Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Receivable Type [Axis] Receivable Type [Axis] PCD loans: Financing Receivable, Purchased with Credit Deterioration, Amount at Purchase Price [Abstract] Impact of equity-based compensation awards Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Repurchase of common stock Payments for Repurchase of Common Stock Class of Stock [Axis] Class of Stock [Axis] Income Taxes Income Tax, Policy [Policy Text Block] Repayment of long-term debt Repayments of Other Long-Term Debt Reclassifications Out of AOCI Disclosure of Reclassification Amount [Text Block] Loan origination costs Deferred Tax Liabilities, Deferred Expense, Debt Issuance Costs Loan portfolio Loan Portfolio [Member] Loan Portfolio [Member] Net income (expense) recognized Gain (Loss) on Derivative Instruments, Net, Pretax Assets acquired Total assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Penalties and interest related to income taxes Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Credit Loss Status [Domain] Credit Loss Status [Domain] Retained earnings Retained Earnings (Accumulated Deficit) Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Scenario [Domain] Scenario [Domain] Progress Progress Bank & Trust [Member] Progress Bank & Trust Recurring Fair Value, Recurring [Member] Vested / Exercised (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Mortgage Loans Held for Sale Mortgage Loans Held For Sale [Abstract] Mortgage Loans Held For Sale TDRs Modified Within the Previous Twelve Months That Have Subsequently Defaulted, Number of Contracts Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts Fair Value, Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Realized (gains) losses included in net income, Tax (Expense) Benefit Income tax expense (benefit) attributable to sales Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Document Fiscal Year Focus Document Fiscal Year Focus Schedule of estimated aggregate amortization expense for future periods Finite-Lived Intangible Assets Amortization Expense [Table Text Block] Operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Risk-based ratios: Banking Regulation, Risk-Based Information [Abstract] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Proceeds from issuance of long-term debt, net of issuance costs Proceeds from Issuance of Other Long-Term Debt Derivative liabilities Derivative Liability Derivative Financial Instruments, Liabilities [Member] BOLI surrender Deferred Tax Liabilities, Bank Owned Life Insurance Surrender Deferred Tax Liabilities, Bank Owned Life Insurance Surrender Derivative instruments designated as cash flow hedges: Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax [Abstract] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Schedule of condensed balance sheets Condensed Balance Sheet [Table Text Block] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Accounting Standards Updates and Recently Adopted Standards Accounting Standards Update and Change in Accounting Principle [Text Block] Equity investments, inflows Proceeds From Other Investments Proceeds From Other Investments 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 AFS, Amortized Cost, More than 10 years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost Schedule of risk category of term loans by vintage year Financing Receivable Credit Quality Indicators [Table Text Block] Security deposits Sales Type And Direct Financing Leases, Security Deposits Sales Type And Direct Financing Leases, Security Deposits Originated in prior year Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Discretionary contributions to deferred compensation plan Deferred Compensation Arrangement With Individual, Discretionary Contributions by Employer Deferred Compensation Arrangement With Individual, Discretionary Contributions by Employer Comprehensive (loss) income, 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 HTM, Amortized Cost, More than 10 years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 10 Schedule of restricted stock units and options outstanding and activity Share-Based Payment Arrangement, Activity [Table Text Block] 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 Nonqualified share based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost Common stock outstanding (in shares) Common Stock, Shares, Outstanding Investment in other subsidiaries Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Goodwill Goodwill Goodwill, beginning balance Goodwill, ending balance Goodwill Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Tier 1 capital, Minimum Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum Actual return Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) 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 Equipment financing Equipment financing loans Equipment Financing [Member] Represents information related to equipment financing. Income tax expense Net income, Tax (Expense) Benefit Income tax (expense) benefit Total income tax expense Income tax benefit Income Tax Expense (Benefit) Less valuation allowance Valuation allowance Deferred Tax Assets, Valuation Allowance 2029 subordinated debentures Two Thousand Twenty Nine Subordinated Debentures [Member] Two Thousand Twenty Nine Subordinated Debentures Hedging Relationship [Axis] Hedging Relationship [Axis] Entity Public Float Entity Public Float Balance Sheet Location [Domain] Balance Sheet Location [Domain] Lease liability Deferred Tax Assets, Lease Liability Deferred Tax Assets, Lease Liability With no allowance Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance HTM, Amortized Cost, Not due at single maturity Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, without Single Maturity Date Less accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Derivative financial instruments Derivative financial instruments Derivative Liability Total gross derivative instruments Derivative Liability, Subject to Master Netting Arrangement, before Offset AFS, Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Rolling Maturity [Abstract] 2023 Defined Benefit Plan, Expected Future Benefit Payment, Year One Total expenses Condensed Income Statement, Total Expense Condensed Income Statement, Total Expense Corporate bonds, measurement input Debt Securities, Available-for-Sale, Measurement Input Interest per one share of preferred stock Interest Per One Share Of Preferred Stock Interest Per One Share Of Preferred Stock Common stock, $1 par value; 200,000,000 shares authorized, respectively; 106,222,758 and 89,349,826 shares issued and outstanding, respectively Common Stock, Value, Issued 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 Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Post-Modification Outstanding Recorded Investment by Type of Modification Financing Receivable, Troubled Debt Restructuring, Postmodification Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Preferred Stock Preferred Stock [Member] Senior debentures Senior Notes [Member] Amount of future funding commitments Other Commitment Loss Contingencies Commitments and Contingencies, Policy [Policy Text Block] 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 Other Other Income 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 Dividends from other subsidiaries Dividend Income, Received From Consolidated Subsidiaries, Other Dividend Income, Received From Consolidated Subsidiaries, Other Deferred Deferred Other Tax Expense (Benefit) Schedule of components of net investment in leases Schedule of Components of Leveraged Lease Investments [Table Text Block] Debt securities held-to-maturity: Debt Securities Held To Maturity [Abstract] Debt Securities Held To Maturity [Abstract] Investment in Bank Investments In Bank Represents amount related to Investments In Bank. Options converted Business Combination, Consideration Transferred, Converted Stock Options Business Combination, Consideration Transferred, Converted Stock Options Decrease (increase) in loans held for sale Increase (Decrease) in Loans Held-for-sale Gross contractual amounts receivable Business Combination, Acquired Receivables, Gross Contractual Amount Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances CET1 capital Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual Employer matching contribution maximum percent of employee's eligible compensation (percent) Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Reclassifications Out of AOCI Reclassification out of Accumulated Other Comprehensive Income [Member] Income Statement Location [Domain] Income Statement Location [Domain] Derivative Assets Derivative Asset [Abstract] Loans held for sale at fair value Loans Held-for-sale, Fair Value Disclosure Number of AFS debt securities in unrealized loss position Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions Fair Value, Total Debt Securities, Available-for-Sale, Unrealized Loss Position Amendment Flag Amendment Flag Investments in LIHTC: Carrying amount Amortization Method Qualified Affordable Housing Project Investments Operating lease cost Operating Lease, Cost Fair value hedging of interest rate risk Fair value hedging Fair Value Hedging [Member] Net amount Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election Unrealized gains (losses) on available-for-sale securities: OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract] Acquisitions Goodwill, Acquired During Period Supplemental consolidated pro forma revenue Business Acquisition, Pro Forma Revenue Liabilities assumed Total liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities 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 Customer derivatives and dealer offsets Customer Derivatives And Dealer Offsets [Member] Information of Customer Derivatives And Dealer Offsets. Construction in progress Construction in Progress [Member] Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Originated four years prior Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year HTM, Fair Value, Within 1 year Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value DTAs: Components of Deferred Tax Assets [Abstract] Dividends on preferred stock Preferred Stock Dividends, Income Statement Impact Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Net cash flow hedge activity, Tax (Expense) Benefit Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax, Parent Goodwill and Other Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Proceeds from maturities and calls Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities 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. Vested / Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Schedule of AFS securities sales activity Schedule of Realized Gain (Loss) [Table Text Block] Unrealized gains on cash flow hedges Deferred Tax Liabilities, Unrealized Gain On Cash Flow Hedge Deferred Tax Liabilities, Unrealized Gain On Cash Flow Hedge Debt securities available-for-sale Fair Value Fair Value Debt Securities, Available-for-Sale, Excluding Accrued Interest Thereafter Finite-Lived Intangible Asset, Expected Amortization, after Year Five BOLI earnings Income Tax Reconciliation, Bank Owned Life Insurance Earnings Income Tax Reconciliation, Bank Owned Life Insurance Earnings Estimate of contractual cash flows not expected to be collected Business Combination, Acquired Receivables, Estimated Uncollectible 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 Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Intangible assets acquired Core deposit intangible Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Goodwill and other intangible assets, net Total goodwill and other intangible assets, net Intangible Assets, Net (Including Goodwill) Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Supplemental Cash Flow Information Cash Flow, Supplemental Disclosures [Text Block] Transfers of Financial Assets Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Sales, Policy [Policy Text Block] Cash payments for lease liability Operating Lease, Payments Salaries and employee benefits Salaries and employee benefits expense Labor and Related Expense Repayment of long-term debt Repayments of Long-Term Debt Options Stock options Share-Based Payment Arrangement, Option [Member] 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 Derivatives designated as hedging instruments Derivative Instruments in Hedges, Assets, at Fair Value 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 Net unrealized (losses) gains, Net of Tax Amount OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Nonaccrual loans Nonaccrual Status [Abstract] Common Stock, Shares Authorized Common stock authorized (in shares) Common Stock, Shares Authorized 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 Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Commercial Commercial Portfolio Segment [Member] Maximum High Maximum [Member] ACL- loans, Initial ACL - PCD loans Financing Receivable, Excluding Accrued Interest, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date TDRs Modified Within the Year That Have Subsequently Defaulted, Recorded Investment Financing Receivable, Troubled Debt Restructuring, Subsequent Default Condensed Financial Statements of United Community Banks, Inc. (Holding Company Only) Condensed Financial Information of Parent Company Only Disclosure [Text Block] Loans and Leases Financing Receivable [Policy Text Block] Residential mortgage Residential mortgage servicing rights Residential Mortgage [Member] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Schedule of gains and losses recognized in income on derivatives not designated as hedging instruments Derivatives Not Designated as Hedging Instruments [Table Text Block] Purchases of common stock Stock Repurchased and Retired During Period, Value Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Designated as hedging instrument Designated as Hedging Instrument [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] ROU asset, balance sheet line item Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Cash and cash equivalents Cash, Cash Equivalents, and Federal Funds Sold Cash flow hedge Interest Rate Cash Flow Hedge Liability at Fair Value Net cash flow hedge activity, Net of Tax Amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Measurement Frequency [Domain] Measurement Frequency [Domain] Common and Preferred Stock Stockholders' Equity Note Disclosure [Text Block] Schedule of components of net periodic benefit cost and other amounts recognized in other comprehensive income Schedule of Net Benefit Costs [Table Text Block] 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] Purchases Payments to Acquire Debt Securities, Available-for-Sale Taxable Interest Income, Securities, Operating, Taxable 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 Unrealized Loss, Total Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss Schedule of supplemental cash flow information Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] AFS, Amortized Cost, Not due at single maturity Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost Deferred income tax benefit related to compensation expense for awards Share-Based Payment Arrangement, Expense, Tax Benefit VIEs Consolidation, Variable Interest Entity, Policy [Policy 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. Purchases of common stock (in shares) Shares repurchased (in shares) Stock Repurchased and Retired During Period, Shares Short-term borrowings Total Short-Term Debt Title of 12(b) Security Title of 12(b) Security Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] HTM, Amortized Cost, 1 to 5 years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year One through Five Community First Capital Trust III Community First Capital Trust Three [Member] Community First Capital Trust Three 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 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] Subsequent Event [Line Items] Subsequent Event [Line Items] Schedule of weighted-average assumptions used to determine pension benefit obligations Defined Benefit Plan, Assumptions [Table Text Block] Unrealized Loss, Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Other lending and loan servicing fees Other Lending And Loan Servicing Fees Other Lending And Loan Servicing Fees Tier 1 capital Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual Allowance for credit losses, AFS portfolio Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Schedule of carrying amount of goodwill and other intangible assets Schedule of Intangible Assets and Goodwill [Table Text Block] Equity compensation Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Amount Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Unrealized Loss, 12 Months or More Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Deposits [Abstract] Deposits [Abstract] Allowance for Credit Loss Financing Receivable, Allowance for Credit Loss [Roll Forward] LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Fair Value Estimate of Fair Value Measurement [Member] U.S. Treasuries U.S. Treasuries US Treasury Securities [Member] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Loans serviced for others not included in balance sheet Continuing Involvement with Derecognized Transferred Financial Assets, Amount Outstanding Weighted average common shares outstanding: Weighted average common shares: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Servicing Assets at Fair Value [Line Items] Servicing Assets at Fair Value [Line Items] AFS, Fair Value Debt Securities, Available-for-Sale, Maturity, Fair Value, Rolling Maturity [Abstract] Income Tax Authority [Axis] Income Tax Authority [Axis] Less net discount Debt Instrument, Unamortized Discount Loans, net Loans Receivable, Fair Value Disclosure 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] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Substandard Substandard [Member] Debt securities held-to-maturity (fair value $2,191,073 and $1,148,804, respectively) Amortized Cost Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss Mortgage loan gains and related fees Mortgage Banking [Member] TDRs Financing Receivable, Troubled Debt Restructuring Commercial & industrial Commercial And Industrial Classification [Member] Commercial And Industrial Classification[Member] Change in plan assets, at fair value: Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Net amount Derivative Liability, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Retirement Plan Funding Status [Axis] Defined Benefit Plan, Funding Status [Axis] Preferred stock issued Preferred Stock, Value, Issued Notional Amount Derivative, Notional Amount 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 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 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. Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Less: Amounts subject to master netting agreements Derivative Asset, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Dividend payable date Dividends Payable, Date to be Paid Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Fair value adjustments included in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Employer match of employee contributions (percent) Defined Contribution Plan, Employer Matching Contribution, Percent of Match 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] Tier 1 leverage ratio, Minimum Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Operating Leases Lessee, Leases [Policy Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Operating lease liability, balance sheet line item Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Depreciation expense Depreciation, Nonproduction Equity Compensation Plans Share-Based Payment Arrangement [Text Block] HTM debt securities Fair Value Fair value Debt Securities, Held-to-Maturity, Fair Value Preferred stock redemption price (in dollars per share) Preferred Stock, Redemption Price Per Share Net interest revenue Interest Income (Expense), Net Loan Commitments and Related Financial Instruments Loan Commitments, Policy [Policy Text Block] 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 Postage, printing and supplies Supplies and Postage Expense Schedule of summarizes the sources and expected tax consequences of future taxable deductions (revenue) Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Noninterest income: Noninterest Income [Abstract] Changes in carrying amount of goodwill Goodwill [Roll Forward] Accrued interest receivable Interest Receivable Time Deposits Deposit Liabilities Disclosures [Text Block] Dilutive securities (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Proceeds from sales and maturities of debt securities available-for-sale and equity securities with readily determinable fair values Proceeds from Sale and Maturity of Debt and Equity Securities, FV-NI, Held-for-investment Guaranteed portion of SBA/USDA loans SBA USDA Guaranteed Loans [Member] SBA USDA Guaranteed Loans [Member] Net cash received in acquisitions Net cash (paid) received for acquisition Payments to Acquire Businesses, Net of Cash Acquired Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances Level 2 Fair Value, Inputs, Level 2 [Member] Goodwill expected to be tax deductible Business Acquisition, Goodwill, Expected Tax Deductible Amount Schedule of repurchase agreements Schedule of Repurchase Agreements [Table Text Block] Current Fiscal Year End Date Current Fiscal Year End Date Tier 1 capital, Well Capitalized Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum FHLB Stock Federal Home Loan Bank Stock Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Servicing assets Deferred Tax Liabilities, Mortgage Servicing Rights Shared service fees from subsidiaries Shared Service Fees From Subsidiaries Shared Service Fees From Subsidiaries Assets: Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Derivatives Deferred Tax Liabilities, Derivatives Concentration Risk Type [Axis] Concentration Risk Type [Axis] Investment securities: Interest and Dividend Income, Securities, by Taxable Status [Abstract] Residential Residential Portfolio Segment [Member] Schedule of major classifications of loan and lease portfolio Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Stated Maturity Date Debt Instruments Maturity Year This element represents debt instruments maturity year. Tax benefit related to uncertain tax positions that increases income from continuing operations Unrecognized Tax Benefits that Would Impact Effective Tax Rate HTM Debt Securities, Held-To-Maturity [Member] Debt Securities, Held-To-Maturity Exercisable period Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Schedule of fair value of derivative financial instruments on consolidated balance sheet Schedule of Derivative Instruments [Table Text Block] Audit Information [Abstract] Audit Information Uncertain tax positions Deferred Tax Liability Uncertain Tax Positions This element represents amount of deferred tax liability uncertain tax position. Schedule of Servicing Assets at Fair Value [Table] Schedule of Servicing Assets at Fair Value [Table] Income Tax Authority [Domain] Income Tax Authority [Domain] Servicing Asset at Amortized Cost [Table] Servicing Asset at Amortized Cost [Table] 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 Assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Provision for credit losses Provision for credit losses Total ACL, (Release) Provision Provision for Loan, Lease, and Other Losses Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Loans receivable Loans Receivable [Member] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Owner occupied commercial real estate Owner Occupied Commercial Real Estate [Member] Represents information of owner occupied commercial real estate. Unrealized holding (losses) gains, Net of Tax Amount OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Equity [Abstract] Equity [Abstract] Subsequent Event [Table] Subsequent Event [Table] Vested / Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period 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. Entity Tax Identification Number Entity Tax Identification Number Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] 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 Schedule of Short-Term Debt [Table] Schedule of Short-Term Debt [Table] Servicing liabilities Servicing Liability Deferred compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits 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. Consolidated Entities [Domain] Consolidated Entities [Domain] Pass Pass [Member] Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] 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] Net change in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect State taxes, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Entity Central Index Key Entity Central Index Key ACL at acquisition Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date Estimated aggregate amortization expense for future periods Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] 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. Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]  Number of Contracts Financing Receivable, Modifications, Number of Contracts Total consideration Total fair value of consideration transferred Total fair value of consideration transferred Business Combination, Consideration Transferred Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Measurement Input Type [Axis] Measurement Input Type [Axis] Entity [Domain] Entity [Domain] RWAs Banking Regulation, Risk-Weighted Assets, Actual City Area Code City Area Code ASSETS Assets [Abstract] Expired (in dollars per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Expired, Weighted Average Grant Date Fair Value Represents the weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. Greater than 90 days Maturity Greater than 90 Days [Member] Classifications of loans Financing Receivable, after Allowance for Credit Loss [Abstract] Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] Net assets acquired Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed) Noninterest-bearing demand Noninterest-Bearing Deposit Liabilities Interest expense: Interest Expense [Abstract] Schedule of changes in SBA/USDA servicing rights Schedule of Servicing Assets at Fair Value [Table Text Block] Operating lease liabilities recognized Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease Liabilities Asset Class [Axis] Asset Class [Axis] Earnings Per Common Share Earnings Per Share, Policy [Policy Text Block] 2028 subordinated debentures Two Thousand Twenty Eight Subordinated Debentures [Member] Represents information of 2028 subordinated debentures. Significant non-cash investing and financing transactions: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Stock-based compensation Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Average total assets Regulatory Asset Preferred stock liquidation preference (in dollars per share) Preferred Stock, Liquidation Preference, Value Variable Rate [Axis] Variable Rate [Axis] Total noninterest expenses Noninterest Expense ACL - unfunded commitments, Beginning Balance ACL - unfunded commitments, Ending Balance Off-Balance-Sheet, Credit Loss, Liability Other liabilities Increase (Decrease) in Other Operating Liabilities Trust preferred securities debt issuance Deferred Tax Liabilities, Preferred Securities, Debt Issuance Costs Deferred Tax Liabilities, Preferred Securities, Debt Issuance Costs Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Aquesta Aquesta Financial Holdings, Inc [Member] Aquesta Financial Holdings, Inc Weighted average Weighted Average Weighted Average [Member] 2023 Finite-Lived Intangible Asset, Expected Amortization, Year One Accumulated benefit obligation - beginning of year Accumulated benefit obligation - end of year Defined Benefit Plan, Benefit Obligation Consumer Consumer Portfolio Segment [Member] Schedule of computation of basic and diluted net income per common share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] ROU assets resulting in net increase in operating lease liability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Gross losses on sales Debt Securities, Available-for-Sale, Realized Loss Fintech funds and certain other equity method investments: Fintech Funds [Member] Fintech Funds 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. Net Investment in Leases Net Investment in Lease, before Allowance for Credit Loss [Abstract] Schedule of loans sold Schedule Of Financing Receivables Sold, Loans [Table Text Block] Schedule Of Financing Receivables Sold, Loans Differences between the provision for income taxes and statutory federal income tax rate Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Disposals Servicing Asset at Fair Value, Disposals Number of firms Number Of Firms Number Of Firms BOLI Bank Owned Life Insurance [Policy Text Block] Disclosure of accounting policy for information of Bank owned life insurance. 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 Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Total Lessee, Operating Lease, Liability, to be Paid FinTrust FinTrust [Member] FinTrust 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 Earn-out payment period Earn-Out Payment Period Earn-Out Payment Period Entity Address, Postal Zip Code Entity Address, Postal Zip Code Stock Options Stock Options [Abstract] Stock Options Proceeds from sale of other real estate owned and repossessed assets Proceeds from Sale of Other Real Estate Net actuarial gain (loss) on defined benefit pension plans, Tax (Expense) Benefit Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax Federal Home Loan Bank advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Short-Term Gross Unrealized Gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Reconciliation of the beginning and ending unrecognized tax benefit Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] 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 Acquisition Activities Business Combinations Policy [Policy Text Block] Begin to expire in 2022 Net Operating Loss Carry Forwards Begin To Expire In Two Zero Two Two [Member] Net Operating Loss Carry Forwards Begin To Expire In Two Zero Two Two Preferred stock dividend rate (percent) Preferred Stock, Dividend Rate, Percentage Fair Value, Total Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value Shares issued in connection with DRIP (in shares) Stock Issued During Period, Shares, Dividend Reinvestment Plan 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. Receivable [Domain] Receivable [Domain] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Net (increase) decrease in loans Payments for (Proceeds from) Loans and Leases Premises and equipment Deferred Tax Liabilities, Property, Plant and Equipment FDIC assessments and other regulatory charges Federal Deposit Insurance Corporation Premium Expense Deferred compensation plan assets Deferred Compensation Plan Assets Financial Asset, Aging [Domain] Financial Asset, Aging [Domain] 2024 Time Deposit Maturities, Year Two Short-term Borrowings and Federal Home Loan Bank Advances Short-Term Debt [Text Block] Fair value hedge Fair Value Hedge Liabilities Pledged securities Asset Pledged as Collateral [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] 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 Deposits Interest Expense, Deposits Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Decreases resulting from a lapse in the applicable statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations 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. 20% adverse change Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 20 Percent Adverse Change in Prepayment Speed Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Federal Domestic Tax Authority [Member] Bifurcated embedded derivatives Bifurcated Embedded Derivative [Member] Represents the bifurcated embedded derivatives. 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. Net income Net income, Net of Tax Amount Net income Net Income (Loss) Attributable to Parent Less: Cash collateral received/pledged Derivative Asset, Fair Value of Collateral Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Amortization of prior service cost Defined Benefit Plan, Amortization of Prior Service Cost (Credit) 2030 senior debentures Two Thousand Thirty Senior Debentures [Member] Two Thousand Thirty Senior Debentures Investments in LIHTC: Investments In LIHTC [Member] Investments In LIHTC Scenario [Axis] Scenario [Axis] Total assets Assets, Fair Value Disclosure Other operating expenses Other Operating Income (Expense) [Member] Customer derivative positions Customer Swap Position [Member] Represents the customer swap positions. Debt and Equity Securities, FV-NI [Line Items] Debt and Equity Securities, FV-NI [Line Items] Operating Leases Lessee, Operating Leases [Text Block] Number of derivative contracts Number of Interest Rate Derivatives Held Total income Condensed Income Statement, Income Condensed Income Statement, Income State and political subdivisions US States and Political Subdivisions Debt Securities [Member] 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. AFS 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 Effect of dilutive securities: Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] Supplemental Cash Flow Elements [Abstract] Supplemental Cash Flow Elements [Abstract] Other Noninterest Income, Other Operating Income Derivative Instrument [Axis] Derivative Instrument [Axis] Number of operating segments Number of Operating Segments Goodwill [Line Items] Goodwill [Line Items] Statement of Cash Flows [Abstract] Statement of Cash Flows Statement of Cash Flows [Abstract] Level 1 Fair Value, Inputs, Level 1 [Member] Originated two years prior Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year Fair value hedge Fair Value Hedge Assets Summary of Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Net cash provided by operating activities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Tier 1 capital Banking Regulation, Tier 1 Risk-Based Capital, Actual Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Derivative financial instruments Derivative financial instruments Derivative Asset Actual revenue included since acquisition date Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Schedule of amortized cost basis, unrealized gains and losses, and fair value of AFS debt securities Debt Securities, Available-for-Sale [Table Text Block] 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] Other liabilities Other Liabilities 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). 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 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 Purchases Payments to Acquire Held-to-Maturity Securities Thereafter Time Deposit Maturities, after Year Five Cancelled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Receivables [Abstract] Receivables [Abstract] Total noninterest income Noninterest Income Document Annual Report Document Annual Report Legal Entity [Axis] Legal Entity [Axis] Liability Class [Axis] Liability Class [Axis] Loans and Leases and Allowance for Credit Losses Loans, Notes, Trade and Other Receivables Disclosure [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 Originated servicing rights capitalized upon sale of loans Servicing Asset at Fair Value, Additions United Community Bank Subsidiaries [Member] Losses on derivative instruments realized in net income, Before-tax Amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Increase in net DTA Deferred Tax Assets, Net, Increase Due To Business Combination And Adoption Of Accounting Standards Deferred Tax Assets, Net, Increase Due To Business Combination And Adoption Of Accounting Standards Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Issuance of preferred stock Stock Issued During Period, Value, New Issues Increase (decrease) in other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Summary of HTM debt securities in an unrealized loss position Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract] Wealth management fees Investment Banking, Advisory, Brokerage, and Underwriting Fees and Commissions Schedule of premises and equipment Property, Plant and Equipment [Table Text Block] Bank owned life insurance Bank Owned Life Insurance Preferred stock issued (in shares) Preferred Stock, Shares Issued Residential mortgage servicing rights Residential Mortgage Servicing Asset At Fair Value, Amount Residential Mortgage Servicing Asset At Fair Value, Amount Financial Asset, Aging [Axis] Financial Asset, Aging [Axis] Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] 2027 Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Five Restricted Stock Units, Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] 2025 Defined Benefit Plan, Expected Future Benefit Payment, Year Three Premises and equipments Property, Plant and Equipment, Net, by Type [Abstract] Other Other Type Of Modification [Member] Represents type of modification other not defined elsewhere. Unrealized Loss, Less than 12 Months Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Fair value Business Combination, Acquired Receivable, Fair Value Dealer offsets to bifurcated embedded derivatives Dealer Offsets To Bifurcated Embedded Derivatives [Member] Represents the dealer offsets to bifurcated embedded derivatives. Product and Service [Domain] Product and Service [Domain] Entity Shell Company Entity Shell Company 2023 Lessee, Operating Lease, Liability, to be Paid, Year One Manufactured housing Manufactured Housing Loan [Member] Manufactured Housing Loan Shares issued in acquisition (in shares) Common stock issued (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Financial Instrument [Axis] Financial Instrument [Axis] DTLs: Components of Deferred Tax Liabilities [Abstract] Subsequent event Subsequent Event [Member] 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 Document Period End Date Document Period End Date Nonaccrual Loans Financing Receivable, Excluding Accrued Interest, Nonaccrual Total assets Assets Assets Overnight and Continuous Maturity Overnight [Member] Schedule of amortized cost basis, unrealized gains and losses and fair value of HTM debt securities Debt Securities, Held-to-Maturity [Table Text Block] Income per common share: Earnings Per Share [Abstract] Earnings Per Share [Abstract] Mortgage banking derivatives Mortgage Banking Derivatives [Member] Information of Mortgage banking derivatives. Net unrealized (losses) gains, Tax (Expense) Benefit OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax Equity securities with readily determinable fair values Equity Securities, FV-NI, Current Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-Maturity Securities [Line Items] Add (deduct): Add Deduct [Abstract] Interest rate swaps Interest Rate Swap [Member] Purchased assets and assumed liabilities recorded at their acquisition date fair values and consideration transferred Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] Credit concentration risk Credit Concentration Risk [Member] Vested / Exercised (in dollars per shares) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price 2027 Lessee, Operating Lease, Liability, to be Paid, Year Five Cash Flow [Table] Cash Flow [Table] Disclosure of information about cash flow. Long-term debt Long-Term Debt, Fair Value Repurchase program authorized amount Stock Repurchase Program, Authorized Amount 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 Asset-backed securities Asset-Backed Securities [Member] Income before income taxes Net income, Before-tax Amount Total before tax Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Schedule of Goodwill [Table] Schedule of Goodwill [Table] Cash dividends on preferred stock Payments of Ordinary Dividends, Preferred Stock and Preference Stock Earnings Per Share Earnings Per Share [Text Block] Other Deferred Tax Liabilities, Other Schedule of actual results and pro forma information Business Acquisition, Pro Forma Information, Nonrecurring Adjustments [Table Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Derivatives designated as hedging instruments Derivative Instruments in Hedges, Liabilities, at Fair Value Derivative assets Derivative Financial Instruments, Assets [Member] Award Type [Domain] Award Type [Domain] 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] Financing Receivable, Troubled Debt Restructuring [Line Items] Financing Receivable, Troubled Debt Restructuring [Line Items] ESPP, discount rate Employee Stock Purchase Program, Discount Rate Employee Stock Purchase Program, Discount Rate Derivative assets - customer derivative positions Derivative Assets Customer Derivative Positions [Member] Derivative Assets Customer Derivative Positions Estimated residual value of leased equipment Sales Type And Direct Financing Leases, Unguaranteed Residual Asset Sales Type And Direct Financing Leases, Unguaranteed Residual Asset Issuance of stock (in shares) Stock Issued During Period, Shares, New Issues HTM, Amortized Cost, 5 to 10 years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 5 through 10 Tax Credit Carryforward [Line Items] Tax Credit Carryforward [Line Items] Other financing inflows Proceeds From Other Financing Activities Proceeds From Other Financing Activities Mortgage loan gains and other related fees Fair Value, Option, Changes in Fair Value, Gain (Loss) Allowance for credit losses, HTM portfolio Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest Customer relationship intangible Customer Relationships [Member] Entity Address, City or Town Entity Address, City or Town 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. Pledging Purpose [Axis] Pledging Purpose [Axis] Earliest Call Date Debt Instrument Earliest Call Year This element represents debt instrument earliest call year. Interest revenue: Interest and Dividend Income, Operating [Abstract] Condensed Income Statements, Captions [Line Items] Condensed Income Statements, Captions [Line Items] Losses on derivative instruments accounted for as cash flow hedges: Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Financing Receivable, Troubled Debt Restructuring [Table] Financing Receivable, Troubled Debt Restructuring [Table] Noninterest expenses: Operating Expenses [Abstract] Debt securities available-for-sale: Debt Securities Available-For-Sale And Equity Securities [Abstract] Debt Securities Available-For-Sale And Equity Securities [Abstract] 2028-2032 Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years Statement of Financial Position [Abstract] Balance Sheet Statement of Financial Position [Abstract] Auditor Name Auditor Name Dividend Restrictions Dividend Restrictions [Policy Text Block] Represents disclosure of accounting policy for dividend restrictions. Net operating loss carryforwards Operating Loss Carryforwards Servicing Assets and Liabilities Transfers and Servicing of Financial Assets [Text Block] 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 Earnings allocated to participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Basic 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 Income producing commercial real estate Income Producing Commercial Real Estate [Member] Property that represents income producing commercial real estate. Restricted stock units Restricted Stock Units Restricted Stock Units (RSUs) [Member] Loans and leases held for investment Total loans Total loans Loans Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 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. Schedule of minimum amounts required for capital adequacy purposes Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Holding Company Parent Company [Member] LIBOR London Interbank Offered Rate (LIBOR) [Member] Hedge Accounting Basis Adjustment Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease) Subsequent Events [Abstract] Subsequent Events [Abstract] Total revenue Revenues Total time deposits Time Deposits Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Financial instruments whose contract amounts represent credit risk Unused Commitments to Extend Credit Fair Value, 12 Months or More Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Trust preferred securities Trust Preferred Securities [Member] Represents information of trust preferred securities. Dividend date of record Dividends Payable, Date of Record Investments in LIHTC: Amount of future funding commitments included in carrying amount Qualified Affordable Housing Project Investments, Commitment Amortization of intangibles Amortization of Intangible Assets Interest Interest Paid, Excluding Capitalized Interest, Operating Activities Schedule of changes in the carrying amounts of goodwill Schedule of Goodwill [Table Text Block] 2025 Lessee, Operating Lease, Liability, to be Paid, Year Three Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Other assets Other Assets [Member] Amortization of defined benefit pension plan net periodic pension cost components: Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Land improvements Land Improvements [Member] Land and land improvements Land and Land Improvements [Member] 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 Concentration Risk Type [Domain] Concentration Risk Type [Domain] Special Mention Special Mention [Member] Structure Extended Maturity [Member] Total shareholders’ equity Beginning balance Ending balance Shareholders’ equity Stockholders' Equity Attributable to Parent Derivatives and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] State tax credits Tax Credit Carryforward, Amount Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] 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 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. Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Other Deferred Tax Assets, Other 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 Commercial MBS Commercial Mortgage-Backed Securities [Member] Less: accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Reliant Reliant Bancorp, Inc [Member] Reliant Bancorp, Inc Option and warrant equity instruments converted Business Combination, Consideration Transferred, Option And Warrant Equity Interests Converted Business Combination, Consideration Transferred, Option And Warrant Equity Interests Converted U.S. Government agencies & GSEs US Government-sponsored Enterprises Debt Securities [Member] 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Three 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] Proceeds from sales Proceeds from Sale of Debt Securities, Available-for-Sale Derivative assets - mortgage Derivative Assets Mortgage [Member] Derivative Assets Mortgage HTM, Fair Value, Not due at single maturity Debt Securities, Held-to-Maturity, Maturity, without Single Maturity Date, Fair Value Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] Retained Earnings Retained Earnings [Member] Deposits Deposits, Fair Value Disclosure Common stock dividends Dividends, Common Stock, Cash Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Total lease cost Lease, Cost Cash flow hedge Interest Rate Cash Flow Hedge Asset at Fair Value Common stock, par value $1 per share Common Stock Common Stock [Member] Schedule of operating lease income and expense and other supplemental information Lease, Cost [Table Text Block] Additional awards remaining available under plan (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Contingent consideration Business Combination, Contingent Consideration, Liability First Miami First Miami Bancorp, Inc [Member] First Miami Bancorp, Inc Statement [Table] Statement [Table] 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 Common stock issued for acquisitions Value of common stock issued Stock Issued During Period, Value, Acquisitions Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] 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 Renewable energy investments: Renewable Energy Investments [Member] Renewable Energy Investments Letters of credit Letter of Credit [Member] Furniture and equipment Furniture and equipment Furniture and Fixtures [Member] ROU asset Deferred Tax Liabilities, Right Of Use Assets Deferred Tax Liabilities, Right Of Use Assets 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 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] Compensation expense related to 401(k) Plan Defined Contribution Plan, Cost Statistical Measurement [Axis] Statistical Measurement [Axis] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Acquired servicing rights Servicing Asset At Fair Value, Acquired Servicing Asset At Fair Value, Acquired Schedule of condensed statements of cash flows Condensed Cash Flow Statement [Table Text Block] Equity Components [Axis] Equity Components [Axis] HTM, Amortized Cost Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity [Abstract] Operating Segments Segment Reporting, Policy [Policy Text Block] Core deposit intangible Core deposit intangible Core Deposits [Member] Expired (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price ACL - Loans Financing Receivable, Allowance For Credit Losses [Policy Text Block] Financing Receivable, Allowance For Credit Losses Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis] Servicing Rights Transfers and Servicing of Financial Assets, Policy [Policy Text Block] Statement [Line Items] Statement [Line Items] 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 Federal funds and other short-term investments Federal Funds Sold And Other Short-Term Investments Federal Funds Sold And Other Short-Term Investments Unearned income Sales Type And Direct Financing Leases, Deferred Selling Profit Sales Type And Direct Financing Leases, Deferred Selling Profit Variable Rate [Domain] Variable Rate [Domain] Intangibles subject to amortization, gross Finite-Lived Intangible Assets, Gross 2027 senior debentures Two Thousand Twenty Seven Senior Debentures [Member] Represents information of 2027 senior debentures. ROU asset Operating Lease, Right-of-Use Asset Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Transfers into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 Dealer offsets to customer derivative positions Dealer Offset To Customer Swap Position [Member] Represents the dealer offset to customer swap position. Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Auditor Firm ID Auditor Firm ID 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 Realized (gains) losses included in net income, Before-tax Amount Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax 2024 Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Two Other non-cash consideration Other Non-Cash Consideration Other Non-Cash Consideration Document Transition Report Document Transition Report 2024 Defined Benefit Plan, Expected Future Benefit Payment, Year Two ACL - unfunded commitments, (Release) Provision Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) Total other comprehensive (loss) income, Before-tax Amount Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Local Phone Number Local Phone Number Series I perpetual non-cumulative preferred stock UCBI Series I Non-Cumulative Preferred Stock [Member] UCBI Series I Non-Cumulative Preferred Stock Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Recently Adopted Standards and Accounting Standards Updates Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] 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 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. State State and Local Jurisdiction [Member] Accrued expenses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Accrued expenses and other liabilities Accrued Liabilities and Other Liabilities Computation of basic and diluted earnings per share Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Total liabilities Liabilities, Fair Value Disclosure Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Prior service cost Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Premises and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share 2026 Lessee, Operating Lease, Liability, to be Paid, Year Four Income Statement [Abstract] Statement of Operations Income Statement [Abstract] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Begin to expire in 2031 Net Operating Loss Carry Forwards Begin To Expire In Two Zero Three One [Member] Net Operating Loss Carry Forwards Begin To Expire In Two Zero Three One [Member] Capital Surplus Additional Paid-in Capital [Member] Document Fiscal Period Focus Document Fiscal Period Focus Adjusted Balance Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Unrealized Loss, 12 Months or More Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Community First Capital Trust I Community First Capital Trust One [Member] Community First Capital Trust One Vested / Exercised during period, Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Diluted (in shares) Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted 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 Net unrealized (losses) gains, Before-tax Amount OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax Proceeds from exercise of options and warrants Proceeds From Exercise Of Options And Warrants Proceeds From Exercise Of Options And Warrants Equity in undistributed earnings of subsidiaries Equity in undistributed earnings of the subsidiaries Income (Loss) from Subsidiaries, Net of Tax Loans, including fees Interest and Fee Income, Loans and Leases Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Buildings and improvements Buildings and improvements Building and Building Improvements [Member] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag CET1 capital, Well Capitalized Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum 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. Carrying Amount Reported Value Measurement [Member] Common stock issuable; 607,128 and 595,705 shares, respectively Common Stocks Issuable Represents amount of carrying amount of common stock issuable. Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Short-Term Debt [Line Items] Short-Term Debt [Line Items] Matching contributions to deferred compensation plan Deferred Compensation Arrangement with Individual, Contributions by Employer Securities losses (gains), net Realized Investment Gains (Losses) Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] With an allowance Financing Receivable, Excluding Accrued Interest, Nonaccrual, With Allowance Amount of financing receivable on nonaccrual status with an allowance for credit loss. 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] Derivative Asset Derivative Asset [Member] Represents Derivative Asset. 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Carrying amount Securities Sold under Agreements to Repurchase Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax 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. Gains from other loan sales, net Gain (Loss) on Sale of Loans and Leases Derivative assets, measurement input Derivative Asset, Measurement Input Regulatory Matters Regulatory Capital Requirements under Banking Regulations [Text Block] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] 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] Income taxes Income Taxes Paid, Net FHLB advances Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Federal Home Loan Bank Advances And Long-Term Debt Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Federal Home Loan Bank Advances And Long-Term Debt Unrealized holding gains (losses) on derivatives, Tax (Expense) Benefit Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax Entity Small Business Entity Small Business Measurement Basis [Axis] Measurement Basis [Axis] 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 Right-of-use assets recognized Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Right-Of-Use Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Right-Of-Use Assets Other Commitments [Table] Other Commitments [Table] Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding Common stock dividends (in dollars per share) Cash dividend declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Lending and loan servicing expense Loan Portfolio Expense 2027 Time Deposit Maturities, Year Five Total intangibles subject to amortization, net Finite-Lived Intangible Assets, Net Unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Retirement Plan Funding Status [Domain] Defined Benefit Plan, Funding Status [Domain] Schedule of minimum future lease payments expected to be received from equipment financing lease contracts Sales-type and Direct Financing Leases, Lease Receivable, Maturity [Table Text Block] Options, Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Premises and Equipment Property, Plant and Equipment Disclosure [Text Block] Debt securities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities Nonrecurring Adjustment [Domain] Nonrecurring Adjustment [Domain] Outstanding, Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Subordinated debentures Subordinated Debt [Member] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Number of banking offices Number Of Branches Represents number of branches operated by entity. Total Sales-Type and Direct Financing Leases, Lease Receivable, Payments to be Received Preferred stock, $1 par value: 10,000,000 shares authorized; Series I, $25,000 per share liquidation preference; 4,000 shares issued and outstanding Preferred stock carrying amount Preferred Stock, Including Additional Paid in Capital, Net of Discount Consolidated Entities [Axis] Consolidated Entities [Axis] Proceeds from Federal Home Loan Bank advances Proceeds from FHLBank Borrowings, Financing Activities Debt Instrument [Line Items] Debt Instrument [Line Items] Business Combination and Asset Acquisition [Abstract] Schedule of Fair Value, Off-balance Sheet Risks [Table] Schedule of Fair Value, off-Balance-Sheet Risks [Table] Class of Stock [Line Items] Class of Stock [Line Items] Impact of equity-based compensation awards (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Operating lease liability Present value of lease liability Operating Lease, Liability Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Repayment of Federal Home Loan Bank advances Payments of FHLBank Borrowings, Financing Activities 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Two Total gains and losses Derivative, Gain (Loss) on Derivative, Net Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Non-credit discount Financing Receivable, Purchased with Credit Deterioration, Discount (Premium) Service charges and fees Deposit Account [Member] Contractual maturities of time deposits Time Deposits, Fiscal Year Maturity [Abstract] Granted (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Benefits paid Defined Benefit Plan, Plan Assets, Benefits Paid Tax exempt Interest Income, Securities, Operating, Tax Exempt ACL - loans, Recoveries Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Total loans Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing Other expense Other Expenses Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Schedule of loans by aging category and accrual status Financing Receivable, Past Due [Table Text Block] (Increase) decrease in other assets Other assets Increase (Decrease) in Other Operating Assets Debt Securities, Held-to-maturity [Table] Debt Securities, Held-to-Maturity [Table] Purchase price Financing Receivable, Purchased with Credit Deterioration, Amount at Purchase Price Expired (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Expired In Period Represents the number of equity-based payment instruments, excluding stock (or unit) options, that were expired during the reporting period. Consideration transferred Business Combination, Consideration Transferred [Abstract] Hedging Relationship [Domain] Hedging Relationship [Domain] Schedule of amortized cost and fair value of AFS and HTM securities by contractual maturity Investments Classified by Contractual Maturity Date [Table Text Block] Hedging Designation [Axis] Hedging Designation [Axis] Auditor Location Auditor Location Cash paid during the period for: Payments for Operating Activities [Abstract] Entity Filer Category Entity Filer Category Actual net income included since acquisition date Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual 2026 Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Four Liabilities: Liabilities, Fair Value Disclosure [Abstract] Compensation expense Share-Based Payment Arrangement, Expense Commitments and contingencies Commitments and Contingencies Security Exchange Name Security Exchange Name 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 Expected useful life of acquired intangible (in years) Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Losses on derivative instruments realized in net income, Net of Tax Amount Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Other liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Accrued interest receivable Interest Receivable and Other Assets [Abstract] Total capital Banking Regulation, Total Risk-Based Capital Ratio, Actual Common stock issued in acquisition Common stock issued Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Service cost Defined Benefit Plan, Service Cost Risk participations Risk Participations [Member] Represents information about risk participations. Loans Past Due, 60 - 89 Days Financial Asset, 60 to 89 Days Past Due [Member] Dividend date declared Dividends Payable, Date Declared Cover [Abstract] Cover [Abstract] Originated in current fiscal year Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Entity Voluntary Filers Entity Voluntary Filers 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 Gains from other loan sales, net Gain (Loss) on Sales of Loans, Net Other assets Other Assets Actuarial losses Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] Schedule of presentation of assets measured at fair value on nonrecurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Accumulated benefit obligation: Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Pledging Purpose [Domain] Pledging Purpose [Domain] Forecast Forecast [Member] Net investment in leases Net investment in leases Net Investment in Lease, before Allowance for Credit Loss Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Cash paid for shares withheld to cover payroll taxes related to equity instruments Payment, Tax Withholding, Share-Based Payment Arrangement Amortization of net actuarial losses Defined Benefit Plan, Amortization of Gain (Loss) Discount rate for disclosures (percent) Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Retirement Plan Name [Axis] Retirement Plan Name [Axis] Total liabilities and shareholders’ equity Liabilities and Equity Rate Reduction Contractual Interest Rate Reduction [Member] Tax credit investments Effective Income Tax Rate Reconciliation, Tax Credit, Amount Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Deposits Deposits [Member] Repurchase program remaining authorization Stock Repurchase Program, Remaining Authorized Repurchase Amount Unfunded plan Defined Benefit Plan, Unfunded Plan [Member] 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. Total DTAs Deferred Tax Assets, Gross Not designated as hedging instrument Not Designated as Hedging Instrument [Member] Short-term borrowings Interest Expense, Other Short-Term Borrowings Securities Debt Securities, Available-for-Sale and Held-to-Maturity, after Allowance for Credit Loss Three Shores Three Shores Bancorporation, Inc. [Member] Three Shores Bancorporation, Inc. Accrued penalties and interest Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Gross gains on sales Debt Securities, Available-for-Sale, Realized Gain Less discount Lessee, Operating Lease, Liability, Undiscounted Excess Amount Diluted (in dollars per share) Earnings Per Share, Diluted Net income available to common shareholders, diluted Net income available to common shareholders, diluted Net Income (Loss) Available to Common Stockholders, Diluted Proceeds from sales of premises and equipment Proceeds from Sale of Property, Plant, and Equipment Vesting period under plan Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period CET1 capital Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Actual Less: Amounts subject to master netting agreements Derivative Liability, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Schedule of accrued interest receivable Schedule Of Debt Securities Accrued Interest Receivable [Table Text Block] Schedule Of Debt Securities Accrued Interest Receivable 2024 Lessee, Operating Lease, Liability, to be Paid, Year Two 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. Net interest revenue after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Overdrawn deposit accounts Deposit Liabilities Reclassified as Loans Receivable Schedule of Available-for-sale Securities [Table] Schedule of Available-for-Sale Securities [Table] Balance at beginning of year Balance at end of year Unrecognized Tax Benefits Foreclosed Properties (OREO) Financing Receivable, Held-for-investment, Foreclosed Asset [Policy Text Block] Acquired intangible assets Deferred Tax Liabilities, Intangible Assets Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Corporate bonds Corporate Bonds Corporate Debt Securities [Member] HTM debt securities: Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Adoption of new accounting standard Cumulative Effect, Period of Adoption, Adjustment [Member] Discount rate for net periodic benefit cost (percent) Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Deposits Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Deposits Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Deposits Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Proceeds from issuance of Series I preferred stock, net of issuance costs Net proceeds from issuance of preferred stock Proceeds from issuance of preferred stock, net of issuance costs Proceeds from Issuance of Preferred Stock and Preference Stock Total gross derivative instruments Derivative Asset, Subject to Master Netting Arrangement, before Offset Schedule of future minimum lease payments under operating leases Lessee, Operating Lease, Liability, Maturity [Table Text Block] Revolvers Financing Receivable, Excluding Accrued Interest, Revolving Entity Address, Address Line One Entity Address, Address Line One Schedule of contractual maturities of time deposits, including brokered time deposits Time Deposit Maturities [Table Text Block] Outside services - electronic banking Noninterest Expense, Outside Services Electronic Banking Noninterest Expense, Outside Services Electronic Banking Product and Service [Axis] Product and Service [Axis] Net increase in short-term borrowings Proceeds from (Repayments of) Short-Term Debt Class of Stock [Domain] Class of Stock [Domain] Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Total interest expense Total interest expense presented in the consolidated statements of income Interest expense Interest Expense AFS debt securities: Debt Securities, Available-for-Sale [Abstract] Tax Credit Carryforward [Table] Tax Credit Carryforward [Table] Pull through rate Measurement Input, Pull Through Rate [Member] Measurement Input, Pull Through Rate [Member] 2023 Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year One Schedule of long-term debt Schedule of Long-Term Debt Instruments [Table Text Block] True tax leases Deferred Tax Liabilities, Leasing Arrangements Construction Construction Construction Loans [Member] Funded status - end of year (plan assets less benefit obligations) Defined Benefit Plan, Funded (Unfunded) Status of Plan FinTrust and Aquesta FinTrust And Aquesta [Member] FinTrust And Aquesta Interest-bearing deposits in banks Interest-Bearing Deposits in Banks and Other Financial Institutions 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 Carrying amount of Assets (Liabilities) Hedged Liability, Fair Value Hedge Total DTLs Deferred Tax Liabilities, Gross Regulatory Capital Requirements Under Banking Regulations [Abstract] Regulatory Capital Requirements Under Banking Regulations 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. Premium amortization expense excluded from assessment of hedge effectiveness Loss from Components Excluded from Assessment of Cash Flow Hedge Effectiveness Current Loans Financial Asset, Not Past Due [Member] Liabilities: Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Schedule Of Servicing Asset [Table] Schedule Of Servicing Asset [Table] Represents the tabular information of servicing asset. 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 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Five Schedule of loans held for sale at fair value under the fair value option Fair Value Option, Disclosures [Table Text Block] Schedule of changes in residential mortgage servicing rights Servicing Asset at Amortized Cost [Table Text Block] Measurement Frequency [Axis] Measurement Frequency [Axis] 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] Other investing outflows Payments For Other Investing Activities Payments For Other Investing Activities Interest-bearing deposits Interest-Bearing Deposit Liabilities CET1 capital, Minimum Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum ACL - Held-to-Maturity Securities, Available-For-Sale Securities, and Off-Balance Sheet Credit Exposures Credit Loss, Financial Instrument [Policy Text Block] Tier 1 leverage ratio Banking Regulation, Tier 1 Leverage Capital Ratio, Actual 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 Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Retirement Benefits [Abstract] Retirement Benefits [Abstract] Supranational entities Other Debt Obligations [Member] Other Commitments [Line Items] Other Commitments [Line Items] Deposits Deposit Balance Sheet Account [Member] Deposit Balance Sheet Account [Member] 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. Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] HTM, Fair Value Debt Securities, Held-to-Maturity, Fair Value, Rolling Maturity [Abstract] Balance at beginning of period Balance at end of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Income tax expense on pretax income at statutory rates Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Proceeds from maturities and calls Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Financing activities: Financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Prepayment rate assumption Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed Other Other expense Other Noninterest Expense Unamortized pension actuarial losses and prior service cost Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions Derivatives not designated as hedging instruments Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value Time deposits (excluding brokered time deposits) that met or exceeded FDIC insurance limit Time Deposits, at or Above FDIC Insurance Limit Unrealized 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 2025 Time Deposit Maturities, Year Three 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]