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Commitments and Contingencies - Additional Information (Detail) - USD ($)
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Loss Contingencies [Line Items]      
Loans held for investment $ 5,824,000 $ 5,561,000 $ 2,290,000
Unfunded Commitments [Member]      
Loss Contingencies [Line Items]      
Loans held for investment $ 167,000 $ 184,000