Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income (Loss), beginning balance	$ (125,088)	$ (83,945)
Other comprehensive income before reclassifications	12,556	(25,180)
Amounts reclassified from AOCI	566	750
Net current-period other comprehensive income	13,122	(24,430)
Accumulated Other Comprehensive Income (Loss), ending balance	(111,966)	(108,375)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income (Loss), beginning balance	(88,337)	(42,914)
Other comprehensive income before reclassifications	12,579	(25,137)
Net current-period other comprehensive income	12,579	(25,137)
Accumulated Other Comprehensive Income (Loss), ending balance	(75,758)	(68,051)
Defined Benefit Pension Plan Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income (Loss), beginning balance	(36,825)	(41,149)
Amounts reclassified from AOCI	564	749
Net current-period other comprehensive income	564	749
Accumulated Other Comprehensive Income (Loss), ending balance	(36,261)	(40,400)
Cash Flow Hedge Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income (Loss), beginning balance	74	118
Other comprehensive income before reclassifications	(23)	(43)
Amounts reclassified from AOCI	2	1
Net current-period other comprehensive income	(21)	(42)
Accumulated Other Comprehensive Income (Loss), ending balance	$ 53	$ 76