Deposits - Summary of Deposit Accounts (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Deposits [Abstract]
Demand, noninterest-bearing	$ 204,495	$ 192,773
Demand, interest-bearing	250,944	254,478
Money market and savings	241,858	228,048
Time deposits, $250 and over	51,855	45,616
Time deposits, other	235,346	225,857
Total deposits	$ 984,498	$ 946,772
Demand, noninterest-bearing	20.77%	20.36%
Demand, interest-bearing	25.49%	26.88%
Money market and savings	24.57%	24.09%
Time deposits, $250 and over	5.27%	4.82%
Time deposits, other	23.91%	23.86%
Total deposits	100.00%	100.00%