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Commitments and Contingencies - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Jan. 01, 2023
Dec. 31, 2022
Other Commitments [Line Items]      
Outstanding Loan Commitments $ 480,800   $ 719,200
Cancellable Amounts 113,500   107,900
Outstanding stand-by letters of credit 12,600   28,300
Reserve for unfunded commitments   $ 3,700 1,812
Credit losses for unfunded commitments 2,400    
Future commitments outstanding related to investments 15,300    
Other Liabilities [Member]      
Other Commitments [Line Items]      
Reserves for unfunded commitments to borrowers $ 3,100   $ 1,800