Retirement Plans - Information about Pension Plan (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Change in benefit obligation:
Beginning benefit obligation	$ 10,123	$ 15,384
Interest cost	454	392	$ 378
Actuarial (gain)/loss	(637)	(3,455)
Benefits paid	(1,921)	(2,198)
Ending benefit obligation	8,019	10,123	15,384
Change in plan assets, at fair value:
Beginning plan assets	10,934	15,120
Actual return	940	(1,988)
Employer contribution	0	0
Benefits paid	(1,921)	(2,198)
Ending plan assets	9,953	10,934	$ 15,120
Funded status at end of year	$ 1,934	$ 811