Income Tax Matters - Provision for Income Taxes and the Amounts Computed by Applying the Statutory Federal Income Tax Rate of 21% to Income Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Provision for income taxes and the amounts computed by applying the statutory federal income tax rate of 21% to income before income taxes
Tax computed at the statutory federal rate	$ 2,679	$ 2,260	$ 2,090
Increases (decreases) resulting from:
State income taxes, net of federal benefit	305	135	248
Meals and entertainment	49	33	24
Tax exempt income on bank owned life insurance policies	(30)	(29)	(238)
Tax exempt interest, net	(181)	(315)	(364)
Other	29	84	(55)
Net provision for income taxes	$ 2,851	$ 2,168	$ 1,705