Components of Net Periodic Benefit Cost for Defined Benefit Plans and Other Postretirement Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 1,279	$ 1,162	$ 1,526
Interest cost	3,770	4,037	3,766
Expected return on plan assets	(4,910)	(5,430)	(5,318)
Net amortization	3,422	2,187	7,621
Net periodic benefit cost	3,561	1,956	7,595
Non-U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	1,506	1,331	1,388
Interest cost	1,734	2,345	2,146
Expected return on plan assets	(1,114)	(1,297)	(1,055)
Net amortization	1,931	1,400	955
Net periodic benefit cost	4,057	3,779	3,434
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	673	714	968
Interest cost	833	932	906
Net amortization	(414)	(474)	24
Net periodic benefit cost	$ 1,092	$ 1,172	$ 1,898