Defined Benefit Plans - Net Periodic Cost (Benefit) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Retirement Benefits [Abstract]
Expected return on plan assets, net of expenses	$ (3,492)	$ (3,210)	$ (10,475)	$ (9,630)
Interest cost on projected benefit obligation	1,005	835	3,013	2,506
Net amortization and deferral	741	1,529	2,223	4,587
Net periodic expense (benefit)	$ (1,746)	$ (846)	$ (5,239)	$ (2,537)