Pension and Other Post-Retirement Benefit Plans (Detail) - Pension Plan - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
U.S. Pension Plans and Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0
Interest cost	446	418
Expected return on plan assets	(751)	(787)
Amortization of prior service cost	2	2
Recognized actuarial loss	83	69
Net (benefit) cost	(220)	(298)
Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	285	287
Expected return on plan assets	(286)	(335)
Amortization of prior service cost	12	0
Recognized actuarial loss	137	137
Net (benefit) cost	$ 148	$ 89