Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Investment Securities [Line Items] Investment Securities [Line Items] Investment Securities [Line Items] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Title of 12(b) Security Title of 12(b) Security Subsequent event Subsequent Event [Member] Carrying Amount Reported Value Measurement [Member] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-Sale [Table] Beginning balance Ending balance Credit Loss, Allowance For Credit Loss Credit Loss, Allowance For Credit Loss Summary of Assets and Liabilities Measured at Fair Value on Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Adjustment to Compensation, Amount Adjustment to Compensation Amount Total capital ratio (to risk weighted assets) Banking Regulation, Total Risk-Based Capital Ratio, Actual Non accrual with no allowance for credit losses Financing Receivable, Nonaccrual, No Allowance Financial Instrument [Axis] Financial Instrument [Axis] Segment Reporting [Abstract] Proceeds from the sale of investment securities Proceeds from Sale, Maturity and Collection of Investments Debt Securities Available for Sale Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Summary of Weighted Average Operating Lease Term And Discount Rate Schedule Of Weighted Average Lease Term And Discount Rate Related To Operating Lease [Table Text Block] Tabular disclosure of weighted average lease term and discount rate related to operating lease. Reportable segment Reportable Segment [Member] Reportable Segment Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] Mortgage servicing rights Mortgages servicing rights, fair value Servicing Asset at Fair Value, Amount Measurement Frequency [Axis] Measurement Frequency [Axis] Percentage of aggregate depreciation in unrealized losses Percentage Of Aggregate Depreciation In Unrealized Losses Percentage of aggregate depreciation in unrealized losses. Consolidated Entities [Axis] Consolidated Entities [Axis] Operational losses Operational Losses Operational losses. Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances Asset backed securities Asset-Backed Securities [Member] Total capital ratio (to risk weighted assets), minimum capital requirement Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum Doubtful/Loss Doubtful [Member] Deposits Deposit Liabilities Disclosures [Text Block] Loans Insured or Guaranteed by US Government Authorities Loans Insured or Guaranteed by US Government Authorities [Member] Leases [Abstract] Leases [Abstract] Other comprehensive income, net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Summary of Actual and Required Capital Ratios of Bank Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Tier 1 capital (to risk weighted assets) Banking Regulation, Tier 1 Risk-Based Capital, Actual Consolidated Entities [Domain] Consolidated Entities [Domain] Summary of Amortized Cost of Debt Securities Held-to-Maturity Debt Securities, Held-to-Maturity [Table Text Block] RSUs released (in shares) Restricted Stock Units, Released, Shares Restricted stock units released shares. Number of investment securities classified as level 3 (in investment securities) Number of Investment Securities Classified as Level 3 Number of Investment Securities Classified as Level 3 Prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff Total, unrealized loss Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Proceeds from sale of other real estate owned Proceeds from Sale of Other Real Estate Prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year Debt Securities Held to Maturity Available-for-Sale Securities, Debt Maturities [Abstract] Number of units outstanding expected to vest (in shares) Outstanding at beginning of period (in shares) Outstanding at end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Year-to-date gross charge-offs Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] Amortization of investment securities premium, net Accretion (Amortization) of Discounts and Premiums, Investments Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Real estate construction loans Construction Loans [Member] Number of reportable segments (in segments) Number of Reportable Segments Provision for (benefit from) credit losses Credit Loss, Expense (Reversal) Credit Loss, Expense (Reversal) Summary of Quantitative Information about Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on Nonrecurring Basis Quantitative Information Fair Value Measurements For Financial Instruments Measured At Fair Value On Nonrecurring Basis Level Three [Table Text Block] Quantitative information fair value measurements for financial instruments measured at fair value on nonrecurring basis level three. Available-for-sale, allowance for credit loss Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss Entity Address, City or Town Entity Address, City or Town RSUs granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Receivables [Abstract] Receivables [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Current fiscal year Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Summary of Bank's Commitments and Contingent Liabilities Summary Of Banks Commitments And Contingent Liabilities [Table Text Block] Summary of the banks commitments and contingent liabilities. Level 2 Fair Value, Inputs, Level 2 [Member] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] > 90 days Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Consolidated Parent Company [Member] Dividends Dividend Income, Operating Proceeds from sale of loans originated for sale Proceeds from Sale, Loan, Mortgage, Held-for-Sale Subsequent Event Type [Axis] Subsequent Event Type [Axis] Other assets Other Non-Segment Assets Other Non-Segment Assets Equipment Equipment Expense Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Savings Deposits, Savings Deposits Summary of Segment Reporting Information by Segment Segment Reporting [Table Text Block] Financial Asset Originated Financial Asset Originated [Member] Use of Estimates in the Preparation of Financial Statements Use of Estimates, Policy [Policy Text Block] Other comprehensive (loss) income Other comprehensive income (loss) Total other comprehensive (loss) income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Summary of Reconciliation of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3) on Recurring Basis Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Due after one year through five years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Summary of Future Expected Operating Lease Payments Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Supplemental disclosure of noncash activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Allowance for credit losses Allowance for credit losses on loans Beginning balance Ending  balance Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest Document Period End Date Document Period End Date Change in unfunded status of the supplemental retirement plans before reclassifications Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax Tri Counties Bank Subsidiaries [Member] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Face Value Debt Instrument, Face Amount 2028 Lessee, Operating Lease, Liability, to be Paid, Year Two Revolving Loans Converted to Term Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan Current Coupon Rate Debt Instrument, Interest Rate, Effective Percentage Lease brokerage income Brokerage Commissions Revenue Due after ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Accumulated other comprehensive loss, net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Foreclosed assets (Land) Real Estate Owned, Residential Real Estate [Member] Real Estate Owned, Residential Real Estate Change Included in Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Interest-bearing demand Interest-Bearing Domestic Deposit, Demand Loans and Leases Receivable Disclosure [Line Items] Loans and Leases Receivable Disclosure [Line Items] Real estate mortgage loans Mortgages [Member] Earnings Per Share Earnings Per Share [Text Block] Per share data: Earnings Per Share [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus ATM and POS network charges Network Charges Network charges. Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] BBB/BB/B BBB/BB/B [Member] BBB/BB/B Due in one year Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Total liabilities Liabilities Trading Symbol Trading Symbol Discount rate Measurement Input, Discount Rate [Member] ROUA obtained in exchange for operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability, Net Right-of-Use Asset Obtained in Exchange for Operating Lease Liability, Net Available for sale debt securities, at fair value (amortized cost of $1,857,352 and $1,883,412) Estimated Fair Value Totals Debt securities available for sale Debt Securities, Available-for-Sale, Excluding Accrued Interest Business Combination [Table] Business Combination, Goodwill, Reportable Segment Assignment [Table] Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Market value of shares tendered in-lieu of cash to pay for exercise of equity and/or related taxes Market value of shares repurchased under equity compensation plans Market Value Of Shares Tendered By Employees In Lieu Of Cash To Pay For Exercise Of Options And Or Related Taxes Market value of shares tendered by employees in lieu of cash to pay for exercise of options and or related taxes. Company Selected Measure Name Company Selected Measure Name Purchases of securities available for sale Payments to Acquire Debt Securities, Available-for-Sale Deposits Interest Expense, Deposits PSU vesting Performance Share Units, Vested, Value Performance share units vesting. Joint beneficiary agreement liability Accumulated Joint Beneficiary Agreement Liability, Attributable To Parent [Member] Accumulated joint beneficiary agreement liability. Due after one year through five years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Obligations of U.S. government agencies US Government Corporations and Agencies Securities [Member] Current fiscal year Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Total non accrual Financing Receivable, Nonaccrual Allowance for Credit Losses Allowance for Credit Losses [Text Block] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Tier 1 capital (to average assets) Banking Regulation, Tier 1 Leverage Capital, Actual Share-based Payment Arrangement, Option, Exercise Price Range [Table] Share-Based Payment Arrangement, Option, Exercise Price Range [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] 2019 Plan Two Thousand Nineteen Plan [Member] Two Thousand Nineteen Plan [Member] SFR 1-4 1st DT liens SFR 1-4 1st DT Liens [Member] SFR 1-4 1st DT Liens Total, fair value Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss Operating lease expense payments Operating cash flows for operating leases Operating Lease, Payments Award Timing Predetermined Award Timing Predetermined [Flag] Interest and dividend income: Interest and Dividend Income, Operating [Abstract] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Level 1 Fair Value, Inputs, Level 1 [Member] RSUs added through dividend and performance credits (in shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Credited From Dividends Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Credited From Dividends Gain (loss) on sale or call of investment securities (Loss) gain on sale of investment securities Gain (loss) on sale or exchange of investment securities Gain (Loss) on Sale of Investments Number of subsidiary business trusts (in trusts) Number Of Subsidiary Business Trust Number of subsidiary business trust. Effect of dilutive stock options and restricted stock (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Debt Securities Available for Sale Debt Securities, Available-for-Sale [Abstract] Off-Balance Sheet, Credit Loss, Liability [Roll Forward] Off-Balance-Sheet, Credit Loss, Liability [Roll Forward] Repurchase of common stock Stock Repurchased and Retired During Period, Value Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Cash dividends received Proceeds from Dividends Received Credit Rating [Axis] Credit Rating [Axis] Credit Rating Vesting [Domain] Vesting [Domain] Plan Name [Domain] Plan Name [Domain] Scenario [Domain] Scenario [Domain] Operating leases, right-of-use Operating Lease, Right-of-Use Asset Due in one year Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Carrying value of loans fully charged-off Loan Charged Off Carrying Value Loan charged off carrying value. Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Automobile/Truck Automobiles [Member] Dividends paid Payments of Ordinary Dividends, Common Stock Provision for losses on foreclosed assets Provision For Benefit From Losses On Foreclosed Assets Provision for benefit from losses on foreclosed assets. Expiration Date Trading Arrangement Expiration Date Net change in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Mortgage banking service fees Mortgage Banking [Member] Gross Unrealized Gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Other Income and Expenses [Abstract] Other Income and Expenses [Abstract] Interest-bearing Interest-Bearing Deposit Liabilities Time deposits Deposits, Fair Value Disclosure Investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Total, unrealized loss Debt Securities, Held-to-Maturity, Unrealized, Accumulated Loss Debt Securities, Held-to-Maturity, Unrealized, Accumulated Loss Corporate bonds Corporate Bonds [Member] Corporate Bonds Segments [Domain] Segments [Domain] Scenario [Axis] Scenario [Axis] Segment net interest income and noninterest income Interest and Non Interest Income (Expense), Net Interest and Non Interest Income (Expense), Net Commercial and industrial Commercial And Industrial Portfolio Segment [Member] Commercial And Industrial Portfolio Segment PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Loans held for sale Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance Available-for-Sale, Estimated Fair Value Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Consumer loans Consumer Loan [Member] Dividends paid Dividends, Common Stock, Cash Total shareholders’ equity Beginning balance Ending balance Equity, Attributable to Parent Total capital (to risk weighted assets), minimum capital requirement Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum Assets: Assets [Abstract] Leases Finance Leases Portfolio Segment [Member] Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items] Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] Summary of Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Fair value nonrecurring basis Fair Value, Nonrecurring [Member] Professional fees Professional Fees Insider Trading Policies and Procedures [Line Items] Conversion ratio (in dollars per share) Common Stock, Convertible, Conversion Price, Increase Schedule of Capitalization [Line Items] Schedule of Capitalization [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Commercial real estate Commercial Real Estate Portfolio Segment [Member] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Options excluded from diluted earnings per share because of their antidilutive effect (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Number of operating segments (in segments) Number of Operating Segments Entity Central Index Key Entity Central Index Key Geographical Descriptions Geographical Descriptions [Policy Text Block] Geographical descriptions. Net interest income after credit loss provision Interest Income (Expense), after Provision for Loan Loss Equity [Abstract] Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Accumulated Other Comprehensive Income (Loss) AOCI attributable to parent AOCI Attributable to Parent [Member] Capital required to be well capitalized to risk weighted assets Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum All Individuals All Individuals [Member] Subordinated Borrowing [Line Items] Subordinated Borrowing [Line Items] Loans and Leases Receivable Disclosure [Table] Loans and Leases Receivable Disclosure [Table] Statement [Line Items] Statement [Line Items] Total assets Total assets for reportable segment Total consolidated assets Assets Business Combination [Abstract] Business Combination [Abstract] Total interest expense Interest expense Interest Expense, Operating Amortization of actuarial losses and Total amounts reclassified out of accumulated other comprehensive loss Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax (Gain) loss on marketable equity securities Equity Securities, FV-NI, Realized Gain (Loss) Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Realized gain (loss) on debt securities and Total amounts reclassified out of accumulated other comprehensive income (loss) Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax RSU vesting Restricted Share Units, Vested, Value Restricted Share Units, Vested, Value Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Stock Options and Other Equity-Based Incentive Instruments Share-Based Payment Arrangement [Text Block] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Occupancy Occupancy, Net PEO PEO [Member] Charge-offs Off Balance Sheet, Credit Loss, Writeoff Off Balance Sheet, Credit Loss, Writeoff Noninterest-bearing demand Noninterest-Bearing Deposit Liabilities Other borrowings Interest Expense, Other Long-Term Debt Junior Subordinated Debt Junior Subordinated Debt [Text Block] Junior subordinated debt. Goodwill Goodwill Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Number of available for sale securities in unrealized loss position (in investment securities) Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions Retained Earnings Retained Earnings [Member] Amortization of actuarial losses Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock, shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Corporate bonds Corporate Debt Securities [Member] Diluted earnings per share (in USD per share) Earnings Per Share, Diluted Description of Business and Basis of Presentation Business Description And Basis Of Presentation [Policy Text Block] Business Description And Basis Of Presentation Policy [Text Block] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Provision (benefit) Financing Receivable, Credit Loss, Expense (Reversal) Amortization of intangible assets Intangible amortization Intangible Asset, Finite-Lived, Amortization Expense Three years before latest fiscal year Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Total service charges and fees Revenue from Contract with Customer, Excluding Assessed Tax Tier 1 capital ratio (to average assets), minimum capital requirement Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum Total Collateral Pledged And Unsecured [Member] Collateral Pledged And Unsecured Financial assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Repurchase of common stock Stock Repurchased During Period, Value Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Summary of Balances of Deposits Deposit Liabilities, Type [Table Text Block] Interest payable Increase (Decrease) in Interest Payable, Net Service charges on deposit accounts Deposit Account [Member] Sale of customer checks Sale Of Customer Checks Sale of customer checks. Total other non-interest income Noninterest Income, Other Multifamily Multifamily [Member] Tier 1 capital ratio (to risk weighted assets), minimum capital requirement Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum Loans Insured or Guaranteed by Government Authorities [Domain] Loans Insured or Guaranteed by Government Authorities [Domain] Pending Merger Business Combination [Text Block] Charge-offs Credit Loss, Allowance For Credit Loss, Writeoff Credit Loss, Allowance For Credit Loss, Writeoff Obligations incurred in conjunction with leased assets Obligations Incurred, Leased Assets Obligations Incurred, Leased Assets Collateral [Axis] Collateral Held [Axis] Provision for credit losses Provision for (Benefit from) Provisions For Loan Losses Amount of Benefits From Reversal Of Provisions For Loan Losses. Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Other Other [Member] Other Revolving Loans Amortized Cost Basis Financing Receivable, Excluding Accrued Interest, Revolving Common stock, shares issued (in shares) Common Stock, Shares, Issued Constant prepayment rate Measurement Input, Constant Prepayment Rate [Member] Common equity Tier 1 capital (to risk weighted assets), minimum capital requirement Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Capital Adequacy, Minimum 12 months or more, unrealized loss Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Comprehensive (Loss) Income Comprehensive Income (Loss) Note [Text Block] Product and Service [Domain] Product and Service [Domain] Class of Stock [Line Items] Class of Stock [Line Items] AAA/AA/A AAA/AA/A [Member] AAA/AA/A Recoveries Credit Loss, Allowance For Credit Loss, Recovery Credit Loss, Allowance For Credit Loss, Recovery California CALIFORNIA TriCo Cap Trust I Tri Co Capital Trust I [Member] TriCo capital trust I. Non-interest expense: Noninterest Expense [Abstract] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three Termination Date Trading Arrangement Termination Date Remaining authorized shares (in shares) Share Repurchase Program, Remaining Authorized, Number of Shares Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Change in minimum pension liability Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Equity Compensation Plans Equity Compensation Plans [Member] Equity Compensation Plans Summary of Components of Other Comprehensive Income and Related Tax Effects Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Fair Value as of Grant Date Award Grant Date Fair Value Loss (gain) on disposal of fixed assets Gain (Loss) on Disposition of Assets Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Arrangement Duration Trading Arrangement Duration Tier 1 capital (to risk weighted assets), minimum capital requirement Banking Regulation, Tier 1 Risk-Based Capital, Capital Adequacy, Minimum Discounts to principal balance of loans owed, net of charge-offs Financing Receivable, Unamortized Loan Cost (Fee) and Purchase Premium (Discount) Multifamily Multifamily Collateral [Member] Multifamily Collateral Entity Registrant Name Entity Registrant Name Entity Address, Postal Zip Code Entity Address, Postal Zip Code Less than 12 months, unrealized loss Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Total consolidated revenues Revenues Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Total other non-interest expense Other Noninterest Expense, Excluding Merger Related Costs Other Noninterest Expense, Excluding Merger Related Costs First Hawaiian, Inc. First Hawaiian, Inc. [Member] First Hawaiian, Inc. Change in: Increase (Decrease) in Operating Liabilities [Abstract] Other time certificates Other Time Certificates Deposits Other time certificates deposits. Other Borrowings Other Borrowings [Text Block] Other borrowings. Summary of Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Award Type [Domain] Award Type [Domain] Asset management and commission income Asset Management And Commission Income Fees received from asset management activities and commission income. 2026 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Fair Value Measurement Fair Value Disclosures [Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Obligations of U.S. government agencies US Government Agencies Debt Securities [Member] Geographical [Axis] Geographical [Axis] Held-to-maturity, allowance for credit loss Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest Segment and Significant Group Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Other assets Other Assets 30-59 days Financial Asset, 30 to 59 Days Past Due [Member] Change in the market value of foreclosed assets Increase (Decrease) in the Market Value of Foreclosed Assets Increase (Decrease) in the Market Value of Foreclosed Assets Legal Entity [Axis] Legal Entity [Axis] Total capital (to risk weighted assets) Banking Regulation, Total Capital, Actual Non-interest income: Noninterest Income [Abstract] Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-NEOs Non-NEOs [Member] Allowance for Credit Losses - Securities Credit Loss, Financial Instrument [Policy Text Block] Credit Loss [Roll Forward] Credit Loss [Roll Forward] Credit Loss Leases Lessee, Operating Leases [Text Block] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Threshold for loan analysis Financing Receivable, Threshold For Loan Analysis Financing Receivable, Threshold For Loan Analysis Due after five years through ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Repurchase of common stock Payments for Repurchase of Common Stock Statistical Measurement [Axis] Statistical Measurement [Axis] Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Retained earnings Retained Earnings (Accumulated Deficit) Common equity Tier 1 capital ratio (to risk weighted assets) Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual Consumer Consumer Portfolio Segment [Member] Product and Service [Axis] Product and Service [Axis] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Proceeds from maturities of securities available for sale Proceeds From Maturities Of Debt Securities, Available-For-Sale Proceeds From Maturities Of Debt Securities, Available-For-Sale Common Stock Common Stock [Member] Schedule of Fair Value, Off-balance Sheet Risks [Table] Fair Value, off-Balance-Sheet Risk [Table] Residential real estate mortgage-backed securities Cash Equivalent, US Government Agency Security, Carrying Value Operating lease cost Operating Lease, Cost Four years before latest fiscal year Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff Schedule Of Other Noninterest Income And Expense [Line Items] Schedule Of Other Noninterest Income And Expense [Line Items] Schedule Of Other Noninterest Income And Expense [Line Items] Company's investments in the trusts Equity Method Investment, Aggregate Cost Foreclosed assets Real Estate Owned [Member] Real Estate Owned Total Past Due Loans Financial Asset, Past Due [Member] Postage Postage Expense Total liabilities and shareholders’ equity Liabilities and Equity Gross realized gains (losses) from the sale of investment securities Realized Investment Gains (Losses) Employee Stock Option Share-Based Payment Arrangement, Option [Member] Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Asset Class [Axis] Asset Class [Axis] Time certificates, $250,000 or more Time Deposits 250000 Or More Time deposits 250000 or more. Other secured financings Other Secured Financings Tabular List, Table Tabular List [Table Text Block] Vesting [Axis] Vesting [Axis] Farmland Farmland [Member] Farmland Name Awards Close in Time to MNPI Disclosures, Individual Name Due after five years through ten years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 5 through 10 Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Other intangible assets, net Core Deposit Intangible Core deposit intangible. Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Preferred stock, no par value: 1,000,000 shares authorized, zero issued and outstanding at June 30, 2026 and December 31, 2025 Preferred Stock, Value, Issued TriCo Cap Trust II Tri Co Capital Trust Two [Member] TriCo Capital Trust II. Adjustment to Compensation: Adjustment to Compensation [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Cash paid for interest expense Interest Paid, Excluding Capitalized Interest, Operating Activity 60-89 days Financial Asset, 60 to 89 Days Past Due [Member] Total assets measured at fair value Total assets measured at fair value Fair Value Assets, Fair Value Disclosure Service Condition Vesting RSUs Service Condition Restricted Stock Units [Member] Service Condition Restricted Stock Units [Member] Name Measure Name Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Common equity Tier 1 capital ratio (to risk weighted assets), minimum capital requirement Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Loans Insured or Guaranteed by Government Authorities [Axis] Loans Insured or Guaranteed by Government Authorities [Axis] Loans, including fees Interest and Fee Income, Financing Receivable Junior subordinated debt Recorded Book Value Junior Subordinated Notes Loans Financing Receivable [Policy Text Block] Equipment Equipment [Member] Name Trading Arrangement, Individual Name Pre-tax compensation costs Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Cash and cash equivalents Cash and Cash Equivalent Company Selected Measure Amount Company Selected Measure Amount Unrealized (loss) gain on securities available for sale Unrealized Gain Loss On Securities Available For Sale Unrealized net loss on securities available for sale. Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts and Financing Receivables [Table] Weighted-average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term Non-PEO NEO Non-PEO NEO [Member] Total non-interest expense Noninterest Expense Transfers into (out of) Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net Non-interest Income and Expense Other Income and Other Expense Disclosure [Text Block] Award Timing Method Award Timing Method [Text Block] Unamortized net deferred loan fees Financing Receivable, Deferred Commitment Fee Forecast Forecast [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Deposits: Deposits, Interest-Bearing and Noninterest-Bearing, Alternative [Abstract] Net income Net income Net income Segment net income/consolidated net income Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Proceeds from sale of premises and equipment Proceeds from Sale of Property, Plant, and Equipment Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] Restatement Determination Date: Restatement Determination Date [Axis] Summary of Components of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Company's common stock in lieu of cash to exercise options to purchase shares (in shares) Share Based Compensation Arrangement by Share Based Payment Award Number of Options Tendered by Employees and Directors Share based compensation arrangement by share based payment award number of options tendered by employees and directors. Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items] Recoveries Financing Receivable, Allowance for Credit Loss, Recovery Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Due after ten years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 10 Gain (loss) on marketable equity securities Gain (Loss) on Marketable Equity Securities, Net Gain (Loss) on Marketable Equity Securities, Net Weighted-average remaining contractual term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted-Average Remaining Contractual Term Tax effect OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax Statistical Measurement [Domain] Statistical Measurement [Domain] Document Fiscal Year Focus Document Fiscal Year Focus Demand, money market, and savings deposits Other Deposits, Fair Value Disclosure Other Deposits, Fair Value Disclosure Merger and acquisition expense Business Combination, Acquisition-Related Cost, Expense Life of mortgage-backed securities Life Of Mortgage Backed Securities Life of mortgage backed securities. SFR-1st Deed SFR First Deed [Member] SFR First Deed Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Total deposits Deposits Common stock, no par value: 50,000,000 shares authorized; 31,965,507 and 32,334,974 issued and outstanding at June 30, 2026 and December 31, 2025, respectively Common Stock, Value, Issued 2027 Lessee, Operating Lease, Liability, to be Paid, Year One Summary of Restricted Stock Unit (RSU) Activity Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Depreciation of premises and equipment, and amortization Depreciation, Amortization and Accretion, Net Loans contractual past due Nonaccrual Status Loans Contractual Past Due Nonaccrual status loans contractual past due. Telecommunications Communication CRE owner occupied CRE Owner Occupied [Member] CRE Owner Occupied Restatement Determination Date Restatement Determination Date Loss (gain) on sale or acquisition of foreclosed assets Gain (Loss) on Foreclosed Assets, Excluding Transfer Of Loans1 Gain (Loss) on Foreclosed Assets, Excluding Transfer Of Loans1 Security credit losses recognized Debt Securities, Available-for-Sale, Transfer in, Allowance for Credit Loss, Expense Other Other Noninterest Expense Amendment Flag Amendment Flag Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Standby letters of credit Standby Letters of Credit [Member] Summary of Gross Unrealized Losses on Investment Securities Debt Securities, Available-for-Sale [Table Text Block] Investments [Domain] Investments [Domain] Originations of loans for sale Payment for Origination, Loan, Mortgage, Held-for-Sale Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Tier 1 capital (to risk weighted assets), minimum to be well capitalized under prompt corrective action provisions Banking Regulation, Tier 1 Risk-Based Capital, Well Capitalized, Minimum Entity Address, State or Province Entity Address, State or Province PEO Total Compensation Amount PEO Total Compensation Amount Weighted average number of common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Share Repurchase Program [Domain] Share Repurchase Program [Domain] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four Other service fees Financial Service, Other [Member] Due after five years through ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Interest income on nonaccrual loans Financing Receivable, Nonaccrual, Interest Income Interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Total non-interest income Other revenues Noninterest Income Service charges and fees Revenue from Contract with Customer, Including Assessed Tax Available-for-Sale, Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract] Loans Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Class of Stock [Axis] Class of Stock [Axis] Investment Securities Schedule of Investments [Text Block] Total loans, net Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss Charge-offs Financing Receivable, Allowance for Credit Loss, Writeoff Accounting Standards Update New Accounting Pronouncements, Policy [Policy Text Block] Certificate of deposits Interest-Bearing Domestic Deposit, Certificates of Deposits Two years before latest fiscal year Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year Less than 12 months, unrealized loss Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Net cash used by investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Market Plus Service Condition Vesting RSUs Restricted Stock Units Market Condition [Member] Restricted Stock Units Market Condition [Member] Due after five years through ten years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Shareholders' Equity Equity [Text Block] Security Exchange Name Security Exchange Name Held to maturity debt securities, at amortized cost, net of allowance for credit losses of $0 Totals Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss Credit Loss Status [Domain] Credit Loss Status [Domain] RSUs forfeited (in shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited or Expired In Period Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited or Expired In Period Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Due after one year through five years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year One through Five Aggregate number of shares of TriCo's common stock issued (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized 12 months or more, fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Interest bearing cash at Federal Reserve and other banks Interest Income, Federal Funds Sold and Securities Purchased under Agreements to Resell Name Outstanding Recovery, Individual Name Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Number of units released (in shares) RSUs released (in shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Release In Period Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Release In Period Held-to-Maturity, Amortized Cost Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity [Abstract] Geographical [Domain] Geographical [Domain] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Due in one year Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Unrealized (losses) gains on available for sale securities arising during the period Unrealized holding (losses) gains on available for sale securities, net of tax OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Unfunded status of the supplemental retirement plans Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Asset Class [Domain] Asset Class [Domain] Collateral dependent loans Losses from Fair Value Adjustments Assets and Liabilities Losses from Fair Value Adjustments Assets and Liabilities Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Voting interest acquired (as a percentage) Business Combination, Voting Equity Interest Acquired, Percentage Weighted average number of common shares outstanding used to calculate diluted earnings per share (in shares) Weighted Average Number of Shares Outstanding, Diluted Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Loans Total Financing receivable, excluding accrued interest, before allowance for credit loss Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss Underlying Security Market Price Change Underlying Security Market Price Change, Percent 2025 Stock Repurchase Plan Two Thousand Twenty Five Stock Repurchase Plan [Member] Two Thousand Twenty Five Stock Repurchase Plan Gross Unrealized Losses Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Discount for present value of expected cash flows Lessee, Operating Lease, Liability, Undiscounted Excess Amount Provision for (benefit from) credit losses Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) Accrued interest receivable Accrued Investment Income Receivable ATM and interchange fees Credit and Debit Card [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Other Other Loans [Member] Other Loans Common equity Tier 1 capital (to risk weighted assets) Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Actual Commercial loans Commercial Loan [Member] Total Lessee, Operating Lease, Liability, to be Paid 0.05% Fixed Rate Collateralized Borrowings Zero Point Zero Five Fixed Rate Collateralized Borrowings [Member] 0.05% Fixed rate collateralized borrowings. Two years before latest fiscal year Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff Collateral [Domain] Collateral Held [Domain] Provision for credit losses Provision For (Benefit From) Provisions For Credit Losses Provision For (Benefit From) Provisions For Credit Losses All Executive Categories All Executive Categories [Member] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Total principal balance of loans owed, net of charge-offs Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process Benefits and other compensation costs Other Labor-related Expenses Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Restricted equity securities Restricted Investments Regulatory assessments and insurance Regulatory Assessments And Insurance Regulatory Assessments And Insurance Measurement input Alternative Investment, Measurement Input Data processing and software Information Technology and Data Processing Summary of Computation of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Debt Disclosure [Abstract] Change in joint beneficiary agreements Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Reclassification Net Of Tax Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Reclassification Net Of Tax Segment Information Segment Reporting [Text Block] Minimum Minimum [Member] Investment Type [Axis] Investment Type [Axis] Less than 12 months, fair value Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value Marketable equity securities Investments, Fair Value Disclosure Liabilities: Liabilities [Abstract] CRE non-owner occupied CRE Non-Owner Occupied [Member] CRE Non-Owner Occupied Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Total salaries and benefits expense Labor And Related Expense, Excluding Merger Related Costs Labor And Related Expense, Excluding Merger Related Costs Overdrawn deposit balances classified as consumer loans Deposit Liabilities Reclassified as Loans Receivable Other liabilities Other Liabilities Construction Construction Portfolio Segment [Member] Construction portfolio segment. Other Noninterest Income, Other Operating Income Common Class B-2 Common Class B-2 [Member] Common Class B-2 Debt Securities Held to Maturity Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Due after ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Exercise Price Award Exercise Price Junior subordinated debt Interest Expense, Junior Subordinated Debentures Segment Reporting [Line Items] Segment Reporting [Line Items] Document Quarterly Report Document Quarterly Report Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Courier service Courier Service Courier service. Obligations of states and political subdivisions US States and Political Subdivisions Debt Securities [Member] Transfers between levels Equity Securities, FV-NI, Restricted Subordinated debt Senior Subordinated Notes [Member] Special Mention Special Mention [Member] Regulatory Matters Regulatory Capital Requirements under Banking Regulations [Text Block] Three years before latest fiscal year Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff Summary of Amortized Cost Basis of Collateral Dependent Loans, By Class of Loan Amortized Cost Basis of Collateral Dependent Loans [Table Text Block] Amortized Cost Basis of Collateral Dependent Loans Accrued interest payable Interest Payable Non accrual, no allowance including guaranteed loans Financing Receivable, Nonaccrual, No Allowance, Including Guaranteed Loans Financing Receivable, Nonaccrual, No Allowance, Including Guaranteed Loans Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Investment Securities [Table] Investment Securities [Table] Investment Securities [Table] Equity Component Equity Component [Domain] Measurement Input Type [Domain] Measurement Input Type [Domain] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Four Lessee, Operating Lease, Liability, to be Paid, after Year Four Loans, net Loans Receivable, Fair Value Disclosure Adoption Date Trading Arrangement Adoption Date Marketable equity securities Equity Securities, FV-NI, Current Regulatory Agency [Axis] Regulatory Agency [Axis] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Loan origination and principal collections, net Payment For Loan And Lease Originations And Principal Collections Payment for loan and lease originations and principal collections. Collateralized borrowing, fixed rate Federal Home Loan Bank, Advance, Branch of FHLBank, Interest Rate Accounting Policies [Abstract] Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Operating lease liability Lease liability Operating Lease, Liability Number of options (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Estimated Fair Value Totals Debt Securities, Held-to-Maturity, Fair Value Regulatory Agency [Domain] Regulatory Agency [Domain] 2024 Plan Two Thousand Twenty Four Plan [Member] Two Thousand Twenty Four Plan Taxable securities Interest Income, Securities, Operating, Taxable Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Allowance For Loan And Lease Losses [Abstract] Allowance For Loan And Lease Losses [Abstract] Allowance For Loan And Lease Losses [Abstract] Repurchase of common stock (in shares) Share Repurchase Program, Authorized, Number of Shares Business Combination [Domain] Business Combination [Domain] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Financial Asset, Period Past Due [Domain] Financial Asset, Aging [Domain] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Weighted Average Weighted Average [Member] All Adjustments to Compensation All Adjustments to Compensation [Member] Business Combination [Axis] Business Combination [Axis] Net cash from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Substandard Substandard [Member] Income Statement [Abstract] Income Statement [Abstract] Shareholders’ equity: Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Tier 1 capital (to average assets), minimum capital requirement Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum Deposit account overdraft privilege Deposit Account Overdraft Privilege [Member] Deposit account overdraft privilege. Common equity Tier 1 capital (to risk weighted assets), minimum to be well capitalized under prompt corrective action provisions Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Well Capitalized, Minimum Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] City Area Code City Area Code Agriculture production Agriculture Production Portfolio Segment [Member] Agriculture Production Portfolio Segment Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Entity [Domain] Entity [Domain] Retail Retail [Member] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Investments: Interest and Dividend Income, Securities, by Taxable Status [Abstract] Total interest and dividend income Interest income Interest and Dividend Income, Operating Past due 90 days or more and still accruing Financing Receivable, 90 Days or More Past Due, Still Accruing Summary of Components of Other Noninterest Income Components Of Other Noninterest Income [Table Text Block] Components of other noninterest income. Cash value of life insurance Cash Surrender Value of Life Insurance Net change in deposits Increase (Decrease) in Deposits Total capital (to risk weighted assets), minimum to be well capitalized under prompt corrective action provisions Banking Regulation, Total Risk-Based Capital, Well Capitalized, Minimum Measurement Basis [Axis] Measurement Basis [Axis] Repurchase of common stock (in shares) Stock Repurchased and Retired During Period, Shares Common equity tier one risk based capital required to be well capitalized to risk weighted assets Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Stock options exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Provision for credit losses Provision For (Benefit From) Provisions For Credit Provision For (Benefit From) Provisions For Credit Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Unrealized holding (losses) gains on available for sale securities before reclassifications OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax Tier 1 capital ratio (to risk weighted assets) Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual Due in one year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Subsequent Event Type [Domain] Subsequent Event Type [Domain] Recoveries Off Balance Sheet, Credit Loss, Recovery Off Balance Sheet, Credit Loss, Recovery Revolving Loans Amortized Cost Basis Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff Unrealized holding (losses) gains on available for sale securities before reclassifications Net unrealized loss on available for sale securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Summary of Quantitative Information about Recurring Level 3 Fair Value Measurements Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Summary of Supplemental Cash Flow Information Related to Leases Schedule Of Supplemental Cash Flow Information Related To Operating Leases [Table Text Block] Tabular disclosure of supplemental cash flow information related to operating leases. Other Operating Interest Income Other Operating interest income other. Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Subordinated Borrowing [Table] Subordinated Borrowing [Table] 12 months or more, unrealized loss Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Premises and equipment, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Debt Securities, Held-to-maturity, Allowance for Credit Loss [Table] Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Table] Financial Instruments [Domain] Financial Instruments [Domain] Four years before latest fiscal year Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year Underlying Securities Award Underlying Securities Amount Life insurance receivable Life Insurance Receivable Life Insurance Receivable Fair Value Estimate of Fair Value Measurement [Member] Base salaries, net of deferred loan origination costs Base Salaries Net Of Deferred Loan Origination Costs Base salaries net of deferred loan origination costs. Amortization of operating lease ROUA Increase (Decrease) in Amortization of Operating Lease Right of Use Asset Increase (Decrease) in Amortization of Operating Lease Right of Use Asset Weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent Summary of Balances of Other Borrowings Summary Of Other Borrowings [Table Text Block] Summary of other borrowings. Segment Reporting [Table] Segment Reporting [Table] Unrealized holding (losses) gains on available for sale securities after reclassifications OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax SFR HELOCs and junior liens Home Equity Loan [Member] Beginning balance Ending balance Off-Balance-Sheet, Credit Loss, Liability Summary of Components of Lease Expense Lease, Cost [Table Text Block] Summary of Amortized Cost, Estimated Fair Value and Allowance for Credit Loss on Investments in Debt Securities Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Less than 12 months, fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Current Fiscal Year End Date Current Fiscal Year End Date Securities held to maturity Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Mortgage servicing rights Mortgage Servicing Rights [Member] Mortgage servicing rights. Office Office [Member] Office Repurchase of common stock (in shares) Stock Repurchased During Period, Shares Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Accumulated other comprehensive income, before tax AOCI before Tax, Attributable to Parent PSUs released (in shares) Performance Share Units, Released, Shares Performance share units released shares. Dividends per share (in USD per share) Dividends paid (in USD per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Net change in other borrowings Proceeds from (Repayments of) Short-Term Debt Summary of Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity Investments Classified by Contractual Maturity Date [Table Text Block] Proceeds from the payment of life insurance benefits Proceeds from Life Insurance Policy Summary of Non Accrual Loans Schedule Of Non Accrual Loans [Table Text Block] Schedule Of Non Accrual Loans [Table Text Block] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Measure: Measure [Axis] Proceeds from sale and calls of available for sale securities Proceeds From Sales And Calls Of Debt Securities, Available-For-Sale Proceeds From Sales And Calls Of Debt Securities, Available-For-Sale Tax exempt securities Interest Income, Securities, Operating, Tax Exempt Accumulated other comprehensive income, tax effect AOCI Tax, Attributable to Parent Equity Components [Axis] Equity Components [Axis] Cash paid for income taxes Income Tax Paid, after Refund Received Other Share Based Awards Other Share Based Awards [Member] Other Share Based Awards Common Class A Common Class A [Member] Farmland Agriculture Loan [Member] Agriculture Loan Entity Interactive Data Current Entity Interactive Data Current Due after one year through five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Tier 1 capital (to average assets), minimum to be well capitalized under prompt corrective action provisions Banking Regulation, Tier 1 Leverage Capital, Well Capitalized, Minimum Entity Small Business Entity Small Business Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Tier one leverage capital required to be well capitalized to average assets Banking Regulation, Tier 1 Leverage Capital Ratio, Well Capitalized, Minimum Net interest income Interest Income (Expense), Operating MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Non accrual including guaranteed loans Financing Receivable, Nonaccrual, Including Guaranteed Loans Financing Receivable, Nonaccrual, Including Guaranteed Loans Document Type Document Type Due after ten years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Allowance for credit loss Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Summary of Terms and Recorded Balance of Subordinated Debenture Schedule of Subordinated Borrowing [Table Text Block] Tier 1 capital ratio (to average assets) Banking Regulation, Tier 1 Leverage Capital Ratio, Actual Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Cash at Federal Reserve and other banks Cash At Federal Reserve And Other Banks Cash at federal reserve and other banks. Income before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Commitments and contingencies (Note 9) Commitments to extend credit Commitments and Contingencies Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Non-agency collateralized mortgage obligations Non-agency mortgage backed securities Non-Agency Collateralized Mortgage Obligations [Member] Non-Agency Collateralized Mortgage Obligations Change in fair market value of mortgage servicing rights Change In Market Value Of Mortgage Servicing Rights Change in market value of mortgage servicing rights. Executive Category: Executive Category [Axis] Liabilities and Shareholders’ Equity: Liabilities and Equity [Abstract] Schedule of Capitalization [Table] Schedule of Capitalization [Table] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Gain on sale of loans Gain on sale of loans Gain on sale of loans Gain (Loss) on Sales of Loans, Net Supplemental disclosure of cash flow activity: Supplemental Cash Flow Information [Abstract] PEO Name PEO Name Financial liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] 12 months or more, fair value Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Cash and due from banks Cash and Due from Banks A/R and Inventory Accounts Receivable And Inventory [Member] Accounts Receivable And Inventory Summary of Analysis of Past Due Loans Financing Receivable, Past Due [Table Text Block] Warehouse Warehouse [Member] Current Financial Asset, Not Past Due [Member] Variable lease income Variable Lease, Cost (Income) Variable Lease, Cost (Income) Credit Rating [Domain] Credit Rating [Domain] Credit Rating Credit Loss Status [Axis] Credit Loss Status [Axis] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Increase in cash value of life insurance Increase in cash value of life insurance Bank Owned Life Insurance Income Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Gain on life insurance death benefit Insured Event, Gain (Loss) Measurement Frequency [Domain] Measurement Frequency [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Equity compensation vesting expense Share-Based Payment Arrangement, Noncash Expense Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] Interest expense: Interest Expense, Operating and Nonoperating [Abstract] Salaries and related benefits Labor and Related Expense Total lease cost Lease, Cost (Gain) loss on disposal of fixed assets Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Change in value of mortgage servicing rights Excess Mortgage Servicing Rights [Member] Excess mortgage servicing rights. Proceeds from maturities of securities held to maturity Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Basic earnings per share (in USD per share) Earnings Per Share, Basic Measurement Input Type [Axis] Measurement Input Type [Axis] Incentive compensation Incentive Compensation Expense Incentive compensation expense. Foreclosed assets Foreclosed Assets [Member] Foreclosed assets. Insider Trading Arrangements [Line Items] Short-term lease cost Short-Term Lease, Cost Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] SFR-2nd Deed SFR Second Deed [Member] SFR Second Deed Other borrowings Other Borrowings Fair Value Measurement [Domain] Fair Value Measurement [Domain] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Number of counties (in counties) Number Of Counties Bank Operates Number Of Counties Bank Operates Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Interest lost on nonaccrual loans Loans Receivable, Impaired, Interest Lost on Nonaccrual Loans Loans Receivable, Impaired, Interest Lost on Nonaccrual Loans Fiscal year before latest fiscal year Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff Other miscellaneous expense Other Operating Expenses Other operating expenses. Schedule Of Other Noninterest Income And Expense [Table] Schedule Of Other Noninterest Income And Expense [Table] Schedule Of Other Noninterest Income And Expense [Table] Equity Awards Adjustments Equity Awards Adjustments [Member] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Other assets and liabilities, net Increase (Decrease) in Other Operating Liabilities Revolving Loans Converted to Term Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff Pass Pass [Member] Plan Name [Axis] Plan Name [Axis] Summary of Loan Balances Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Summary of Estimated Fair Values of Financial Instruments that are Reported at Amortized Cost in Consolidated Balance Sheets Estimated Fair Values Of Financial Instruments That Are Reported At Amortized Cost In Consolidated Balance Sheets [Table Text Block] Estimated fair values of financial instruments that are reported at amortized cost in consolidated balance sheets. Share Repurchase Program [Axis] Share Repurchase Program [Axis] Class of Stock Class of Stock [Domain] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] First Hawaiian shares acquired for each TriCo share Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Summary of Activity in Allowance for Loan Losses, and Ending Balance of Loans, Net of Unearned Fees for Periods Indicated Summary of Activity in Allowance for Loan Losses and Loans Net of Unearned Fees [Table Text Block] Summary of activity in allowance for loan losses and ending balance of loans net of unearned fees. Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Entity Filer Category Entity Filer Category Total, fair value Debt Securities, Available-for-Sale, Unrealized Loss Position Loans transferred to foreclosed assets Loans Transferred To Foreclosed Assets Loans transferred to foreclosed assets. Advertising Advertising Expense Financial Asset, Period Past Due [Axis] Financial Asset, Aging [Axis] Deposits [Abstract] Deposits [Abstract] Investment securities: Investments, Debt and Equity Securities [Abstract] Banking Regulation, Global Systemically Important Bank (GSIB) Surcharge [Abstract] Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Share price (in USD per share) Business Combination, Price Per Share Basel III Fully Phased In Basel Three Fully Phased In [Member] Basel Three Fully Phased In [Member] Coupon Rate (Variable) 3 mo. SOFR + Preferred Securities Redeemable Interest Rate Preferred securities redeemable interest rate. Entity Address, Address Line One Entity Address, Address Line One Held-to-Maturity, Estimated Fair Value Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Provision for income taxes Provision for income taxes Income Tax Expense (Benefit) Total Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Securities pledged as collateral Securities Pledged as Collateral Securities Pledged as Collateral Discounted cash flow Valuation Technique, Discounted Cash Flow [Member] Statement [Table] Statement [Table] Tier one risk based capital required to be well capitalized to risk weighted assets Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum Fiscal year before latest fiscal year Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Loans held for sale Loan, Held-for-Sale, Fair Value Disclosure Collateral dependent loans Collateral Dependent Loans [Member] Collateral Dependent Loans