Deposits - Summary of Deposit Balances by Type (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Deposits [Abstract]
Demand deposits	$ 142,794	$ 145,666
NOW accounts	53,329	53,996
Money market deposits	92,769	90,544
Regular and other savings accounts	196,145	191,712
Brokered deposits	3,072	10,061
Total non-certificate accounts	488,109	491,979
Term certificates less than $250,000	84,258	85,877
Term certificates of $250,000 or more	22,256	20,235
Term certificates - brokered	30,056	40,056
Total certificate accounts	136,570	146,168
Total deposits	$ 624,679	$ 638,147