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Significant Accounting Policies and Basis of Presentation - Narrative (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Accounting Policies [Abstract]    
Average reserve balances required to be maintained with federal reserve bank $ 0 $ 0
Contractual payment of principal duration (days) 90 days  
Contractual terms for loans (months) 6 months  
Maximum loan to value ratio 80.00%  
Threshold period past due, writeoff 120 days  
FHLB, Federal Reserve Bank, and other restricted stock $ 109,548 $ 74,196
Percentage of tax position that will be realized or sustained upon examination 50.00%