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Borrowings - Additional Information (Detail) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Banks unused remaining borrowing capacity $ 60,000 $ 36,500
Advances through FLHB 85,597 99,397
Federal home loan bank maximum borrowing capacity 3,000 3,000
Fed Funds Borrowing [Member]    
Borrowing capacity 5,000 5,000
Bank Term Funding Program [Member]    
Borrowing capacity 33,400  
Borrower-In-Custody of Collateral Program [Member]    
Borrowing capacity 61,100  
New England Program [Member]    
Advances through FLHB $ 2,700 $ 2,700
Interest rate 0.00% 0.00%