Pension and Other Post-Retirement Benefit Plans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 32	$ 29
Interest cost	469	463
Expected return on plan assets	(678)	(668)
Amortization of prior service cost	0	0
Recognized actuarial loss (gain)	107	117
Net (benefit) cost	(70)	(59)
Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	359	366
Expected return on plan assets	(398)	(395)
Amortization of prior service cost	0	0
Recognized actuarial loss (gain)	55	6
Net (benefit) cost	16	(23)
Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	4	4
Expected return on plan assets	0	0
Amortization of prior service cost	2	2
Recognized actuarial loss (gain)	(25)	(30)
Net (benefit) cost	$ (19)	$ (24)