Income Taxes - Components of Consolidated Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current:
Federal	$ 13,621	$ 12,753	$ 11,368
State	1,020	427	1,055
Total Current	14,641	13,180	12,423
Deferred:
Federal	655	(802)	2,943
State	(27)	(334)	(1,673)
Total Deferred	628	(1,136)	1,270
Income tax expense, Total	$ 15,269	$ 12,044	$ 13,693