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Deposits - Composition of Deposits (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Deposits [Abstract]    
Non-interest bearing checking $ 98,970 $ 62,768
Interest bearing checking 30,630 25,432
Money market 103,724 65,999
Statement savings accounts 58,895 47,981
Certificates of deposit 87,629 142,416
Total $ 379,848 $ 344,596