Defined Benefit Plans - Net Periodic Cost (Benefit) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Retirement Benefits [Abstract]
Expected return on plan assets, net of expenses	$ (2,740)	$ (3,492)	$ (5,480)	$ (6,983)
Interest cost on projected benefit obligation	1,746	1,004	3,492	2,008
Net amortization and deferral	870	741	1,740	1,482
Net periodic expense (benefit)	$ (124)	$ (1,747)	$ (248)	$ (3,493)