Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive income (loss)	$ (20,561)	$ 7,997
Pre-tax amount	(13,059)	(31,366)
Tax (provision) benefit	(1,765)	(2,345)
Reclassification of (gain) loss to net income	(1,390)	5,153
Ending balance, accumulated other comprehensive income (loss)	(36,775)	(20,561)
Foreign Currency Translation Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive income (loss)	(22,076)	12,751
Pre-tax amount	(20,055)	(34,947)
Foreign currency translation	(11)	120
Ending balance, accumulated other comprehensive income (loss)	(42,142)	(22,076)
Unrealized Gain (Loss) on Net Investment Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive income (loss)	276	(3,683)
Pre-tax amount	4,510	6,344
Tax (provision) benefit	(1,742)	(2,385)
Ending balance, accumulated other comprehensive income (loss)	3,044	276
Unrealized Actuarial Gain (Loss) Related to Pension Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive income (loss)	1,008	1,150
Pre-tax amount		(50)
Tax (provision) benefit		57
Reclassification of (gain) loss to net income	(21)	(35)
Foreign currency translation	(7)	(114)
Ending balance, accumulated other comprehensive income (loss)	980	1,008
Unrealized Gain (Loss) on Cash Flow Hedging Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive income (loss)	(111)	(2,535)
Pre-tax amount	2,414	(2,790)
Tax (provision) benefit	(23)	(17)
Reclassification of (gain) loss to net income	(1,341)	5,237
Foreign currency translation	18	(6)
Ending balance, accumulated other comprehensive income (loss)	957	(111)
Unrealized Gain (Loss) on Post Retirement Obligation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, accumulated other comprehensive income (loss)	342	314
Pre-tax amount	72	77
Reclassification of (gain) loss to net income	(28)	(49)
Ending balance, accumulated other comprehensive income (loss)	$ 386	$ 342