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Qualified Affordable Housing Project Investments (Details Textual) - USD ($) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Investment Program, Proportional Amortization Method, Elected [Line Items] |  |
Qualified affordable housing projects | $ 22,000,000 | $ 17,900,000
Investment, Proportional Amortization Method, Elected, Statement of Financial Position [Extensible Enumeration] | Affordable Housing Investments | Affordable Housing Investments
Total unfunded commitments | $ 13,900,000 | $ 12,300,000
Amortization expense | $ 1,900,000 | $ 1,700,000
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration] | Income taxes | Income taxes
Investment Program Proportional Amortization Method Applied Income Tax Credit And Other Tax Benefit Amortization Statement Of Cash Flows [Extensible Enumeration Not Disclosed Flag] | true | true
Tax credits and other benefits | $ 2,300,000 | $ 2,200,000
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Cash Flows [Extensible Enumeration] | Increase (Decrease) in Other Operating Assets and Liabilities, Net | Increase (Decrease) in Other Operating Assets and Liabilities, Net
Investment Program Proportional Amortization Method Elected Income Tax Credit And Other Income Tax Benefit Before Amortization Statement Of Income Or Comprehensive Income [Extensible Enumeration Not Disclosed Flag] | true | true
Impairment losses | $ 0 | $ 0

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