Defined Contribution Plans, Pension and Other Post-Retirement Benefit Plans - Change in Benefit Obligation Plan Assets and Funded Status (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Change in plan assets:
Fair value of plan assets — Beginning of year	$ 71,413
Fair value of plan assets at end of year	69,876	$ 71,413
U.S. Pension Plans
Change in benefit obligation:
Benefit obligation — Beginning of year	50,764	42,029
Service cost	135	84	$ 108
Interest cost	1,846	1,887	1,704
Participant contributions	0	0
Participant contributions	(2,062)	(2,007)
Actuarial loss (gain)	(3,319)	8,771
Exchange rate changes	0	0
Benefit obligation at end of year	47,364	50,764	42,029
Change in plan assets:
Fair value of plan assets — Beginning of year	35,660	33,542
Actual return on plan assets	532	2,035
Employer contributions	2,140	2,090
Participant contributions	0	0
Participant contributions	(2,062)	(2,007)
Exchange rate changes	0	0
Fair value of plan assets at end of year	36,270	35,660	33,542
Funded status	(11,094)	(15,104)
Non-U.S. Pension Plans
Change in benefit obligation:
Benefit obligation — Beginning of year	43,569	43,271
Service cost	0	0	0
Interest cost	1,470	1,758	1,761
Participant contributions	0	0
Participant contributions	(1,676)	(1,590)
Actuarial loss (gain)	(2,263)	2,642
Exchange rate changes	(1,914)	(2,512)
Benefit obligation at end of year	39,186	43,569	43,271
Change in plan assets:
Fair value of plan assets — Beginning of year	35,752	35,044
Actual return on plan assets	328	3,599
Employer contributions	818	733
Participant contributions	0	0
Participant contributions	(1,676)	(1,590)
Exchange rate changes	(1,614)	(2,034)
Fair value of plan assets at end of year	33,608	35,752	35,044
Funded status	(5,578)	(7,817)
Other Post-Retirement Benefit Plans
Change in benefit obligation:
Benefit obligation — Beginning of year	515	686
Service cost	0	0	0
Interest cost	18	28	29
Participant contributions	11	14
Participant contributions	(117)	(100)
Actuarial loss (gain)	4	(113)
Exchange rate changes	0	0
Benefit obligation at end of year	431	515	686
Change in plan assets:
Fair value of plan assets — Beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	106	86
Participant contributions	11	14
Participant contributions	(117)	(100)
Exchange rate changes	0	0
Fair value of plan assets at end of year	0	0	$ 0
Funded status	$ (431)	$ (515)