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Deposits - Schedule of Time Deposits Maturities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Banking And Thrift [Abstract]    
2020 $ 222,413  
2021 64,611  
2022 34,238  
2023 52,381  
2024 16,223  
Thereafter 34  
Total $ 389,900 $ 368,670