Defined Contribution Plans, Pension and Other Post-Retirement Benefit Plans - Amounts Recognized as Other Changes in Plan Assets and Benefit Obligations in Other Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Total recognized in other comprehensive income (loss)	$ 2,785	$ (9,815)
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss (gain)	(1,178)	9,251
Amortization of actuarial (gain) loss	(457)	(159)
Prior Service credit	0	0
Total recognized in other comprehensive income (loss)	(1,635)	9,092
Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss (gain)	(994)	934
Amortization of actuarial (gain) loss	(275)	(249)
Prior Service credit	0	0
Total recognized in other comprehensive income (loss)	(1,269)	685
Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss (gain)	4	(113)
Amortization of actuarial (gain) loss	121	158
Prior Service credit	(6)	(6)
Total recognized in other comprehensive income (loss)	$ 119	$ 39