Income Tax Matters - Significant Components of Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current tax expense:
Federal	$ 2,706	$ 925	$ 2,311
State	256	176	309
Total	2,962	1,101	2,620
Deferred tax expense (benefit):
Federal	(709)	466	86
State	(85)	138	57
Total	(794)	604	143
Net provision for income taxes	$ 2,168	$ 1,705	$ 2,763