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Deposits - Schedule of Maturities of Time Deposits (Detail) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Banking and Thrift [Abstract]    
Remainder of 2020 $ 339,988  
2021 129,137  
2022 64,816  
2023 76,407  
2024 23,002  
Thereafter 3,662  
Time deposits $ 637,012 $ 606,010