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Deposits - Composition of Deposits (Detail) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Banking and Thrift [Abstract]    
Non-interest bearing checking $ 58,362 $ 85,988
Interest bearing checking 25,480 25,556
Money market 69,132 59,071
Statement savings 51,162 53,245
Certificates of deposit 194,577 182,277
Total $ 398,713 $ 406,137