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Deposits - Summary of Time Certificates of Deposit Accounts Included in Total Deposits and Their Remaining Maturities (Detail)
$ in Thousands
Dec. 31, 2016
USD ($)
Deposits [Abstract]  
2017 $ 147,873
2018 36,027
2019 17,348
2020 10,622
2021 10,366
Thereafter 8,538
Total $ 230,774