Defined Contribution Plans, Pension and Other Post-Retirement Benefit Plans - Pension and Other Post-Retirement Benefit Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 135	$ 84	$ 108
Interest cost	1,846	1,887	1,704
Expected return on plan assets	(2,673)	(2,514)	(2,202)
Amortization of prior service cost	0	0	0
Recognized actuarial loss (gain)	457	159	421
Net periodic benefit cost	(235)	(384)	31
Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0
Interest cost	1,470	1,758	1,761
Expected return on plan assets	(1,597)	(1,891)	(1,878)
Amortization of prior service cost	0	0	0
Recognized actuarial loss (gain)	275	249	302
Net periodic benefit cost	148	116	185
Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0
Interest cost	18	28	29
Expected return on plan assets	0	0	0
Amortization of prior service cost	6	6	(122)
Recognized actuarial loss (gain)	(121)	(158)	(157)
Net periodic benefit cost	$ (97)	$ (124)	$ (250)