Retirement Plans - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Employee service period under ESOP	1 year
Deferred compensation obligations	$ 5,738	$ 5,945
Cash values of the insurance policies purchased to fund deferred compensation obligations	133,742	117,857	$ 118,870
Funded status of the supplemental retirement plans	(13,901)	(2,399)
AOCI, defined benefit plan, after tax	(9,792)	(1,690)
Amortization of actuarial losses	$ 455
401(k) Plan
Defined Benefit Plan Disclosure [Line Items]
Minimum age for employees	21 years
Minimum period for employees to participate	90 days
Discretionary matching contribution equal to percentage of participant's contribution	50.00%
Discretionary matching contribution maximum percentage of eligible compensation	4.00%
Supplemental Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Cash values of the insurance policies purchased to fund deferred compensation obligations	$ 133,742	117,857
Funded status of the supplemental retirement plans	13,901	2,399
AOCI, defined benefit plan, after tax	9,792	1,690
Deferred tax liability	$ (4,109)	$ (709)