Defined Benefit Plans - Net Periodic Cost (Benefit) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Retirement Benefits [Abstract]
Expected return on plan assets, net of expenses	$ (2,488)	$ (2,342)
Interest cost on projected benefit obligation	1,470	1,655
Net amortization and deferral	209	310
Net periodic expense (benefit)	$ (809)	$ (377)