Defined Benefit Plans - Net Periodic Cost (Benefit) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Retirement Benefits [Abstract]
Expected return on plan assets, net of expenses	$ (2,412)	$ (2,740)	$ (4,823)	$ (5,480)
Interest cost on projected benefit obligation	1,661	1,746	3,323	3,492
Net amortization and deferral	419	870	837	1,740
Net periodic expense (benefit)	$ (332)	$ (124)	$ (663)	$ (248)