Income Taxes - Income Tax Provision Attributable to Income from Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Expected provision using statutory federal income tax rate	$ 3,860	$ 3,473
Effect of bond and loan tax-exempt income	(104)	(113)
Bank owned life insurance income	(147)	(141)
Other	18	4
Total income tax provision	$ 3,627	$ 3,223