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, 2016	Dec. 31, 2015	Dec. 31, 2014
Change in plan assets:
Fair value of plan assets — Beginning of year	$ 69,876
Fair value of plan assets at end of year	69,470	$ 69,876
U.S. Pension and Other Post-Retirement Benefit Plans
Change in benefit obligation:
Benefit obligation — Beginning of year	47,795	51,279
Service cost	126	135	$ 84
Interest cost	1,878	1,864	1,915
Participant contributions	7	11
Benefits paid	(2,161)	(2,179)
Actuarial loss (gain)	(133)	(3,315)
Exchange rate changes	0	0
Benefit obligation at end of year	47,512	47,795	51,279
Change in plan assets:
Fair value of plan assets — Beginning of year	36,270	35,660
Actual return on plan assets	2,035	532
Employer contributions	2,239	2,246
Participant contributions	7	11
Benefits paid	(2,161)	(2,179)
Exchange rate changes	0	0
Fair value of plan assets at end of year	38,390	36,270	35,660
Funded status	(9,122)	(11,525)
Non-U.S. Pension Plans
Change in benefit obligation:
Benefit obligation — Beginning of year	39,186	43,569
Service cost	0	0	0
Interest cost	1,370	1,470	1,758
Participant contributions	0	0
Benefits paid	(1,454)	(1,676)
Actuarial loss (gain)	9,234	(2,263)
Exchange rate changes	(7,516)	(1,914)
Benefit obligation at end of year	40,820	39,186	43,569
Change in plan assets:
Fair value of plan assets — Beginning of year	33,608	35,752
Actual return on plan assets	4,214	328
Employer contributions	756	818
Participant contributions	0	0
Benefits paid	(1,454)	(1,676)
Exchange rate changes	(6,044)	(1,614)
Fair value of plan assets at end of year	31,080	33,608	$ 35,752
Funded status	$ (9,740)	$ (5,578)