Income Taxes - Schedule of Tax Effects of Temporary Differences Result in Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Allowance for loan losses	$ 2,591	$ 2,851
Restricted stock	373	313
OREO adjustment	96	95
Net loan fees	1,214	1,368
Organizational costs	5	6
Right-of-use liability	1,718	1,463
Accrued compensation	116
Unrealized losses on securities transferred to held to maturity		12
Gross deferred tax assets	6,113	6,108
Deferred tax liabilities:
Depreciation	393	267
Unrealized gain on securities available for sale	56	285
Prepaid expense	22	20
Right-of-use asset	1,585	1,371
Other	11
Gross deferred tax liabilities	2,067	1,943
Net deferred tax asset	$ 4,046	$ 4,165