Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 556,984
Other comprehensive income before reclassifications	(4,639)	$ (44,161)	$ (56,129)
Amounts reclassified from AOCI	2,262	3,018	1,712
Net current period other comprehensive income	(2,377)	(41,143)	(54,417)
Ending Balance	634,604	556,984
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(88,337)	(42,914)	(10,971)
Other comprehensive income before reclassifications	(8,438)	(45,423)	(31,943)
Net current period other comprehensive income	(8,438)	(45,423)	(31,943)
Ending Balance	(96,775)	(88,337)	(42,914)
Defined Benefit Pension Plan Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(36,825)	(41,149)	(18,672)
Other comprehensive income before reclassifications	3,818	1,311	(24,186)
Amounts reclassified from AOCI	2,217	3,013	1,709
Net current period other comprehensive income	6,035	4,324	(22,477)
Ending Balance	(30,790)	(36,825)	(41,149)
Cash Flow Hedge Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	74	118	115
Other comprehensive income before reclassifications	(19)	(49)	0
Amounts reclassified from AOCI	45	5	3
Net current period other comprehensive income	26	(44)	3
Ending Balance	100	74	118
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(125,088)	(83,945)	(29,528)
Ending Balance	$ (127,465)	$ (125,088)	$ (83,945)