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Borrowed Funds - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Debt Disclosure [Abstract]    
Amount of credit available with FHLB loan $ 414,000,000.0  
Loans collateralized for FHLB advances 762,300,000  
Securities pledged as collateral for FHLB advances 410,492  
FHLB advances 0 $ 0
Average balance on FHLB advances $ 0 $ 6,200,000
Weighted average interest rate on FHLB advances 0.00% 1.73%