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Time deposits in banks Time Deposits, at Carrying Value Entity Central Index Key Entity Central Index Key Number of collateral dependent loans Number Of Collateral Dependent Loans Number Of Collateral Dependent Loans Within one year Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Financing Receivable, Allowance for Credit Loss [Roll Forward] Financing Receivable, Allowance for Credit Loss [Roll Forward] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Shareholders' Equity Equity [Text Block] Number of collateral dependent loans in process of foreclosure Number Of Collateral Dependent Loans In Process Of Foreclosure Number Of Collateral Dependent Loans In Process Of Foreclosure Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Equity Component [Domain] Equity Component 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Unsecured Debt [Member] Statement [Table] Statement [Table] Measurement Frequency [Domain] Measurement Frequency [Domain] City Area Code City Area Code Financial assets: Financial Assets, Recorded At Amortized Cost [Abstract] Financial Assets, Recorded At Amortized Cost Gain on sale of loans Gain (Loss) on Sale of Loans and Leases Unfunded Loan Commitment Unfunded Loan Commitment [Member] Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities 2027 Time Deposit Maturities, Year Two Number of deposits Deposits, $5 Million Or More, Number Of Deposit Relationships Deposits, $5 Million Or More, Number Of Deposit Relationships Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Available-for-Sale Available-for-Sale Securities, Debt Maturities [Abstract] 2025 Time Deposit Maturities, Remainder of Fiscal Year Supplemental disclosure of noncash items: Noncash Investing and Financing Items [Abstract] Interest-bearing deposits in banks Interest Income, Deposits with Financial Institutions Entity controlled by existing and former board members and their affiliates Entity Controlled By Existing And Former Board Members And Affiliates [Member] Entity Controlled By Existing And Former Board Members And Affiliates Available borrowing capacity with the FHLB Line of Credit Facility, Remaining Borrowing Capacity Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] 2026 Time Deposit Maturities, Year One 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 Commitments [Axis] Other Commitments [Axis] Loans and Allowance for Credit Losses Financing Receivables [Text Block] After five years through ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Bank-owned life insurance Bank Owned Life Insurance Subsequent Event Type [Axis] Subsequent Event Type [Axis] Amortization, debt issuance costs Accumulated Amortization, Debt Issuance Costs Earnings per common share: Earnings Per Share [Abstract] Equity [Abstract] Equity [Abstract] Retained earnings Retained Earnings (Accumulated Deficit) After ten years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 10 Stock forfeitures (in shares) Stock Repurchased and Retired During Period, Shares Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Operating lease liability Operating Lease, Liability Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Earnings on BOLI Earnings on BOLI Bank Owned Life Insurance Income Underlying Securities Award Underlying Securities Amount Investment Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Advances (payments) on other borrowings Repayments of Other Debt Proceeds received from equity investment Proceeds from Sale of Equity Method Investments Amendment Flag Amendment Flag Pledging Purpose [Domain] Pledging Purpose [Domain] Carrying Amounts Reported Value Measurement [Member] Entity Registrant Name Entity Registrant Name Federal Reserve Discount Window Federal Reserve Discount Window [Member] Federal Reserve Discount Window Subordinated Debt Subordinated Debt [Member] Purchase of BOLI Payment to Acquire Life Insurance Policy, Investing Activities Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Investment securities in a loss position for less than twelve months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions Federal Reserve Bank of San Francisco Federal Reserve Bank Of San Francisco [Member] Federal Reserve Bank Of San Francisco Net unrealized holding gain (loss) on securities available-for-sale during the period Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, before Tax, Portion Attributable to Parent Fair Value as of Grant Date Award Grant Date Fair Value Subsequent Events [Abstract] Subsequent Events [Abstract] Net change in deposits Increase (Decrease) in Deposits Substandard Substandard [Member] Debt issuance costs Debt Issuance Costs, Net Within one year Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Subordinated Notes and Other Borrowings Debt Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Geographical [Domain] Geographical [Domain] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Face amount Debt Instrument, Face Amount Stock compensation expense Shares Issued, Value, Share-Based Payment Arrangement, before Forfeiture Entity Address, Postal Zip Code Entity Address, Postal Zip Code Organization Consolidation, Policy [Policy Text Block] Advertising and promotional Advertising Expense Largest single deposit Largest Single Deposit Largest Single Deposit Restatement Determination Date: Restatement Determination Date [Axis] Title of 12(b) Security Title of 12(b) Security Common stock, no par value; 100,000,000 shares authorized; 21,329,235 shares issued and outstanding at March 31, 2025; 21,319,083 shares issued and outstanding at December 31, 2024 Common Stock, Value, Issued Share-Based Payment Arrangement, Directors Share-Based Payment Arrangement, Directors [Member] Share-Based Payment Arrangement, Directors 2023 Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year Total Past Due Financial Asset, Past Due [Member] FDIC insurance Federal Deposit Insurance Corporation Premium Expense Subordinated notes Interest Expense, Subordinated Notes and Debentures Grantee Status [Axis] Grantee Status [Axis] Interest-bearing deposits in banks Interest-Bearing Deposits in Banks and Other Financial Institutions After ten years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 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] Provision (Benefit) Provision (benefit) Financing Receivable, Credit Loss, Expense (Reversal) Amortization of low income housing tax credits Investment Program, Proportional Amortization Method, Applied, Amortization Expense Shares forfeited (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Preferred stock, no par value; 10,000,000 shares authorized; zero issued and outstanding at March 31, 2025 and December 31, 2024 Preferred Stock, Value, Issued Summary of Disclosure of Activity in the Allowance for Loan Losses Schedule Of Activity In The Allowance For Loan Losses [Table Text Block] Schedule Of Activity In The Allowance For Loan Losses Undisbursed agricultural real estate loans Undisbursed Agricultural Real Estate Loans [Member] Undisbursed Agricultural Real Estate Loans [Member] Interest-bearing domestic deposit, time deposits Total time deposits Interest-Bearing Domestic Deposit, Time Deposits Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Percentage of deposits over five million deposits (in percent) Percentage of Deposits over $5 Million to Deposits Percentage of Deposits over $5 Million to Deposits Amount outstanding Line of Credit Facility, Fair Value of Amount Outstanding 2021 Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year Fair Value Measurement [Domain] Fair Value Measurement [Domain] Basic earnings per common share (in USD per share) Basic EPS (in USD per share) Earnings Per Share, Basic Watch Watch [Member] Watch [Member] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Loan-related fees Loan-related Fees Loan-Related fees 2029 Time Deposit Maturities, Year Four Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Gross proceeds from sale of loans Proceeds from Sale, Loan, Held-for-Sale Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Interest-bearing transaction accounts Interest Expense Domestic Deposit Liabilities, Checking Summary of Unrealized Losses and Fair Value of Available-for-Sale Securities Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table 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] Total assets Assets Amounts outstanding Less: outstanding borrowings Long-Term Line of Credit Shares granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period The Federal Reserve Discount Window, increasing borrowing capacity Federal Funds Purchased [Member] Summary of Fair Value of Assets and Liabilities Measured on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Purchase of premises and equipment Payments to Acquire Property, Plant, and Equipment Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Securities held-to-maturity Fair Value Securities held-to-maturity, at fair value Debt Securities, Held-to-Maturity, Fair Value Commitments and contingencies (Note 8) Commitments and Contingencies FRB pledged loans Federal Reserve Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged Federal Reserve Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged Termination Date Trading Arrangement Termination Date 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] Savings accounts Interest-Bearing Domestic Deposit, Savings Foregone interest income related to non-accrual loans Financing Receivable, Nonaccrual, Interest Income, Foregone Financing Receivable, Nonaccrual, Interest Income, Foregone Revolving Converted to Term Financing Receivable, Revolving, Converted to Term Loan Net deferred loan fees Financing Receivable, Unamortized Loan Cost (Fee) and Purchase Premium (Discount) Assets: Assets, Total [Member] CDARS C D A R S [Member] C D A R S [Member] Entity Address, City or Town Entity Address, City or Town Equity investments, remaining commitment amount Equity Method Investment, Remaining Commitment Amount Equity Method Investment, Remaining Commitment Amount Loans greater than 90 days past due Financing Receivable, 90 Days or More Past Due, Still Accruing Twelve months or more, fair value Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value After one but within five years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Debt Instrument [Axis] Debt Instrument [Axis] Undisbursed commercial real estate loans Undisbursed Commercial Real Estate Loans [Member] Undisbursed Commercial Real Estate Loans [Member] Net income Net income Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Summary of Fair Value Estimates for Financial Instruments by Balance Sheet Grouping Fair Value, by Balance Sheet Grouping [Table Text Block] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Other Commitments [Table] Other Commitments [Table] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Shares forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Gross unrealized gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Total non-accrual loans Financing Receivable, Nonaccrual Cash and cash equivalents Cash And Cash Equivalents, Less Time Deposits, At Carrying Value Cash And Cash Equivalents, Less Time Deposits, At Carrying Value Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] After ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 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] Current Financial Asset, Not Past Due [Member] Non-interest-bearing Noninterest-Bearing Deposit Liabilities Entity File Number Entity File Number Nontaxable securities Interest Income, Securities, Operating, Tax Exempt Document Fiscal Year Focus Document Fiscal Year Focus Income Statement [Abstract] Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Summary of Composition of Network Deposits Schedule of Composition of Network Deposits [Table Text Block] Schedule of Composition of Network Deposits Summary of Non-accrual Loans Financing Receivable, Nonaccrual [Table Text Block] Entity Address, Address Line Two Entity Address, Address Line Two Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Cash dividends paid Cash dividends paid Dividends, Common Stock Name Forgone Recovery, Individual Name Document Period End Date Document Period End Date Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Beginning of the period balance (in shares) End of the period balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Insider Trading Arrangements [Line Items] 2028 Time Deposit Maturities, Year Three Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Held-to-maturity securities in a continuous loss position for more than twelve months Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, More Than 12 Months, Number Of Positions Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, More Than 12 Months, Number Of Positions Adjustment to Compensation: Adjustment to Compensation [Axis] Document Transition Report Document Transition Report Document Quarterly Report Document Quarterly Report Consumer and other Commercial, Consumer and other Consumer Portfolio Segment [Member] After one but within five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Total interest expense Interest Expense, Operating Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Accumulated other comprehensive loss, net of taxes Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Current Reporting Status Entity Current Reporting Status Retained Earnings Retained Earnings [Member] Other time accounts Interest-Bearing Domestic Deposit, Other Time Deposit Amortization of subordinated note issuance costs Amortization of Debt Issuance Costs Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Basic weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Greater Than 90 Days Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Marketable Securities [Line Items] Marketable Securities [Line Items] Twelve months or more, unrealized loss Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Residential construction Real estate, Residential construction Real Estate Residential Construction Loans [Member] Real Estate Residential Construction Loans [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Total non-interest expense Noninterest Expense Executive Category: Executive Category [Axis] Name Awards Close in Time to MNPI Disclosures, Individual Name Less than twelve continuous months, unrealized loss Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Real estate related loans (in percent) Real Estate Related Loans Percentage Real Estate Related Loans Percentage Entity Filer Category Entity Filer Category Letter of Credit Letter of Credit [Member] Company Selected Measure Name Company Selected Measure Name