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Qualified Affordable Housing Project Investments - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Investment Program, Proportional Amortization Method, Elected [Line Items]      
Investments in qualified affordable housing projects included in other assets $ 15,850 $ 15,122  
Investment, Proportional Amortization Method, Elected, Statement of Financial Position [Extensible Enumeration] Other Assets Other Assets  
Unfunded commitments related to the investments in qualified affordable housing projects $ 5,668 $ 5,722  
Recognized amortization expense $ 1,273 $ 1,035 $ 1,086
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration] Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Cash Flows [Extensible Enumeration Not Disclosed Flag] true true true
Recognized tax credits and other benefits from its investments in affordable housing tax credits $ 1,562 $ 1,655 $ 1,391
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 true
Investment Program, Proportional Amortization Method Elected Income Tax Credit And Other Income Tax Benefit Before Amortization Statement Of Cash Flows Extensible Enumeration Not Disclosed Flag true true true
Impairment losses related to its investment in qualified affordable housing projects $ 0 $ 0 $ 0