Deposits - Summary of Deposit Accounts (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Deposits [Abstract]
Demand, noninterest-bearing	$ 184,857	$ 129,243
Demand, interest-bearing	305,934	256,258
Money market and savings	266,743	205,843
Time deposits, $250 and over	39,123	56,266
Time deposits, other	155,053	124,055
Total deposits	$ 951,710	$ 771,665
Demand, noninterest-bearing	19.42%	16.75%
Demand, interest-bearing	32.15%	33.21%
Money market and savings	28.03%	26.68%
Time deposits, $250,000 and over	4.11%	7.29%
Time deposits, other	16.29%	16.08%
Total deposits	100.00%	100.00%