Components of Net Periodic Pension Cost Benefit (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Compensation And Retirement Disclosure [Abstract]
Service cost	$ 546	$ 615	$ 725
Interest cost	2,493	3,357	4,237
Expected return on plan assets	(4,490)	(5,261)	(4,558)
Amortization of actuarial loss			1,533
Net periodic cost	$ (1,451)	$ (1,289)	$ 1,937