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Undisbursed Residential Real Estate Loans Shareholders' Equity Equity [Text Block] Current Financial Asset, Not Past Due [Member] Geographical [Axis] Geographical [Axis] Interest Bearing Deposits [Table] Interest Bearing Deposits [Table] Interest Bearing Deposits 2019 Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year Subordinated Debt Subordinated Debt [Member] Earnings on BOLI Earnings on BOLI Bank Owned Life Insurance Income Subordinated debt Interest Expense, Subordinated Notes and Debentures FHLB advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-Term FHLB stock and other investments Investment in Federal Home Loan Bank Stock, Fair Value Disclosure One-way deposits One-Way Deposits One-Way Deposits Preferred stock (in USD per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, no par value; 10,000,000 shares authorized; zero issued and outstanding at June 30, 2023 and December 31, 2022 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[Abstract] Total interest expense Interest Expense Cash dividends paid Dividends, Common Stock Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] ROUA recorded in conjunction with adoption of ASC 842 Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Transfer from loans held for sale to loans held for investment Transfer From Loans Held For Sale To Loans Held For Investment Transfer From Loans Held For Sale To Loans Held For Investment Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Entity File Number Entity File Number Amortization of deferred loan fees and costs Amortization of Deferred Loan Origination Fees, Net 2021 Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 2024 Time Deposit Maturities, Year One Stock issued under stock award plans, net (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Fair Value, Liabilities Measured on 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Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Asset Class [Axis] Asset Class [Axis] 2023 Time Deposit Maturities, Remainder of Fiscal Year Financial liabilities: Financial Liabilities, Recorded At Amortized Cost [Abstract] Financial Liabilities, Recorded At Amortized Cost Common stock, shares issued (in shares) Common Stock, Shares, Issued Shares vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Weighted average remaining term on the unvested restricted shares (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Unvested, Weighted Average Remaining Contractual Terms Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Unvested, Weighted Average Remaining Contractual Terms Gross unrealized losses Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Interest-bearing transaction accounts Interest Expense Domestic Deposit Liabilities, Checking Security Exchange Name Security Exchange Name Accounting Standards Update 2018-01 Accounting Standards Update 2018-01 [Member] Total securities in a loss position, unrealized loss Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Accounting Standards Update 2019-11 Accounting Standards Update 2019-11 [Member] FHLB stock price (in USD per share) Federal Home Loan Bank, Advances, Stock Price For Sales And Purchases Federal Home Loan Bank, Advances, Stock Price For Sales And Purchases Number of investment securities in a continuous loss position for twelve months or more Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions Accumulated other comprehensive loss, net Accumulated Other Comprehensive Income (Loss), Net of Tax Commercial lines of credit Commercial Lines of Credit [Member] Commercial Lines of Credit [Member] Available-for-sale (AFS) and Held-to-Maturity Debt Securities Investment, Policy [Policy Text Block] Maximum Maximum [Member] Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Fixed-to-floating Rate Subordinated Notes Issued August 2022 Fixed-to-floating Rate Subordinated Notes Issued August 2022 [Member] Fixed-to-floating Rate Subordinated Notes Issued August 2022 Document Type Document Type FHLB advances Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances Accounting Standards Update [Domain] Accounting Standards Update [Domain] Number of loan production offices Number Of Loan Production Offices Number Of Loan Production Offices Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Time accounts, $250 or more Interest Expense Domestic Deposit Liabilities Time Deposit 250000 Or More Interest Expense Domestic Deposit Liabilities Time Deposit 250000 Or More Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Nontaxable securities Interest Income, Securities, Operating, Tax Exempt Loan-related expenses Loan-related Expenses Loan-related Expenses Gross unrealized gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Subsequent Event [Table] Subsequent Event [Table] Basis of Financial Statement Presentation and Consolidation and Emerging Growth Company Basis of Accounting, Policy [Policy Text Block] Purchases of securities available-for-sale Payments to Acquire Debt Securities, Available-for-Sale Unfunded Loan Commitment Unfunded Loan Commitment [Member] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Schedule of Interest-Bearing Deposits. Schedule of Interest-bearing deposits. [Table Text Block] Schedule of Interest-bearing deposits. Subsequent Event Subsequent Event [Member] Secure State of California Deposits Letters Of Credit Pledged As Security For State Of California Deposits [Member] Letters Of Credit Pledged As Security For State Of California Deposits Variable Rate [Axis] Variable Rate [Axis] Income Statement [Abstract] Income Statement [Abstract] Investment in Federal Home Loan Bank Stock Investment in Federal Home Loan Bank Stock [Member] Loan originations, net of repayments Payments For Origination Of Loans, Net Of Proceeds From Repayments Payments For Origination Of Loans, Net Of Proceeds From Repayments Title of 12(b) Security Title of 12(b) Security 2025 Time Deposit Maturities, Year Two Interest-bearing deposits in other banks Interest Income, Deposits with Financial Institutions Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Derivatives – interest rate swap Derivative Liability Deposits over five million, amount Deposits, $5 Million Or More, Amount Deposits, $5 Million Or 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Lease Right Of Use Asset Noncash Transaction To Acquire Operating Lease Right Of Use Asset Other Commitments [Domain] Other Commitments [Domain] Statistical Measurement [Axis] Statistical Measurement [Axis] Financial Instrument [Axis] Financial Instrument [Axis] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Entity Interactive Data Current Entity Interactive Data Current Schedule of Realized Gain (Loss) Schedule of Realized Gain (Loss) [Table Text Block] Revolving Loans Financing Receivable, Revolving Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Amortization, debt issuance costs Accumulated Amortization, Debt Issuance Costs Service charges on deposit accounts Service Charges On Deposit Accounts Service Charges On Deposit Accounts Money market accounts Interest-Bearing Domestic Deposit, Money Market Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] 2027 Time Deposit Maturities, Year Four Retained earnings Cumulative effect of adoption of ASC 842 and 326 on retained earnings Retained Earnings (Accumulated Deficit) Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Face amount Debt Instrument, Face Amount Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Federal Reserve Bank Branch [Domain] Federal Reserve Bank Branch [Domain] Federal Reserve Bank Branch [Domain] Other Commitments [Line Items] Other Commitments [Line Items] Advertising and promotional Advertising Expense Total non-interest income Noninterest Income Entity Address, State or Province Entity Address, State or Province Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Interest payable and other liabilities Increase (Decrease) in Interest Payable, Net Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Maturities, prepayments, and calls of securities available-for-sale Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Non-interest income: Noninterest Income [Abstract] CALIFORNIA CALIFORNIA Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding Asset Class [Domain] Asset Class [Domain] Interest rate swap Derivative Asset, Subject to Master Netting Arrangement, before Offset Common Stock (in USD per share) Common Stock, Par or Stated Value Per Share Interest income related to non-accrual loans Financing Receivable, Nonaccrual, Interest Income Deposits and Federal Funds Purchased Deposits And Federal Funds Purchased [Member] Deposits And Federal Funds Purchased Net cash used in investing activities Net Cash Provided by (Used in) 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Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Purchase of FHLB stock Payments for (Proceeds from) Federal Home Loan Bank Stock Loans held for sale Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance Measurement Frequency [Domain] Measurement Frequency [Domain] Title of Individual [Axis] Title of Individual [Axis] Unrealized (loss) gain on securities: Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, before Tax, Portion Attributable to Parent [Abstract] Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Total non-interest expense Noninterest Expense Debt Disclosure [Abstract] Debt Disclosure [Abstract] Number of reportable segments Number of Reportable Segments Earnings per common share: Earnings Per Share [Abstract] Subsequent Event [Line Items] Subsequent Event [Line Items] Common stock, no par value; 100,000,000 shares authorized; 17,257,357 shares issued and 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[Member] Non-interest expense: Noninterest Expense [Abstract] Segments Segment Reporting, Policy [Policy Text Block] Cumulative Effect Adjustment for Adoption of ASC 326 Accounting Standards Update and Change in Accounting Principle [Table Text Block] Interest payable and other liabilities Interest Payable Mortgage-backed securities Mortgage-backed securities Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member] Pledging Purpose [Axis] Pledging Purpose [Axis] Interest-Bearing Deposits Interest-Bearing Deposits [Text Block] Interest-Bearing Deposits Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Summary of Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Accounting Standards Update [Axis] Accounting Standards Update [Axis] Entity Filer Category Entity Filer Category Allowance for credit losses - loans Allowance for Credit Losses Less: Allowance for credit losses Beginning Balance Ending Balance Allowance for credit loss Financing Receivable, Allowance for Credit Loss Statement [Table] Statement [Table] Current Fiscal Year End Date Current Fiscal Year End Date EPS Earnings Per Share, Policy [Policy Text Block] Net gain on sale of securities available-for-sale Net Gain On Sale Of Securities Available-For-Sale This item represents the difference between the realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities. Securities held-to-maturity Fair Value Debt Securities, Held-to-Maturity, Fair Value Pass Pass [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Gain on sale of loans Gain (Loss) on Sale of Loans and Leases Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized ICS I C S [Member] I C S [Member] Shares granted (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Loans and Allowance for Credit Losses Financing Receivables [Text Block] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Marketable Securities [Line Items] Marketable Securities [Line Items] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Revolving Converted to Term Financing Receivable, Revolving, Converted to Term Loan Federal Reserve Bank Branch [Axis] Federal Reserve Bank Branch [Axis] Federal Reserve Bank Branch Prior Financing Receivable, Originated, More than Five Years before Current Fiscal Year Federal Funds Purchased Federal Funds Purchased [Member] FHLB Agreement FHLB Agreement [Member] FHLB Agreement Securities held-to-maturity, at amortized cost (fair value of $3,208 and $3,432 at June 30, 2023 and December 31, 2022, respectively) Amortized Cost Securities held-to-maturity, at amortized cost Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Total shareholders’ equity Beginning balance Ending balance Equity, Attributable to Parent Gross realized gains Debt Securities, Available-for-Sale, Realized Gain Loans held for investment, net of allowance for credit losses Financing Receivable, after Allowance for Credit Loss Restricted Stock Restricted Stock [Member] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Within one year Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Interest-bearing Deposits Interest-bearing Deposits Interest-bearing Deposits Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Subsequent Events [Abstract] Subsequent Events [Abstract] Income before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Schedule of Other Commitments Other Commitments [Table Text Block] Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Obligations of states and political subdivisions US States and Political Subdivisions Debt Securities [Member] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Entity Emerging Growth Company Entity Emerging Growth Company Debt issuance costs Debt Issuance Costs, Net Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] After ten years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 10 Employee Share-Based Payment Arrangement, Employee [Member] Loans held for sale Loan, Held-for-Sale, Fair Value Disclosure Document Fiscal Period Focus Document Fiscal Period Focus Remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Stock compensation expense Share-Based Payment Arrangement, Noncash Expense Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Common Stock Common Stock [Member] City Area Code City Area Code Entity Address, Postal Zip Code Entity Address, Postal Zip Code Product and Service [Axis] Product and Service [Axis] Financial Asset, Aging [Domain] Financial Asset, Aging [Domain] Financial Asset, Aging [Domain] Time deposits in banks Time Deposits, at Carrying Value Fair Value Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Other operating expenses Other Noninterest Expense Document Fiscal Year Focus Document Fiscal Year Focus Geographical [Domain] Geographical [Domain] Marketable Securities [Table] Marketable Securities [Table] Total deposits Deposits Total network deposits Total network deposits Total network deposits Interest-bearing Total interest-bearing deposits Interest-Bearing Deposit Liabilities Minimum Minimum [Member] Other Noninterest Income, Other Operating Income Premises and equipment, net Property, Plant and Equipment, Net Receivables [Abstract] Receivables [Abstract] Cash dividends 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Subordinated Debt Obligations, Fair Value Disclosure Accounting Standards Update 2016-02 [Member] Accounting Standards Update 2016-13 [Member]