Changes in Accumulated Other Comprehensive (Loss) Income - Changes in Accumulated Other Comprehensive (Loss) Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 9,441	$ (3,683)	$ 5,408	$ 6,200
Other comprehensive (loss) income before reclassifications, net of income tax	(12,293)	8,866	(8,376)	(1,195)
Amounts reclassified from accumulated other comprehensive income to the condensed consolidated statement of operations and comprehensive loss, net of income tax	167	(15)	283	163
Net current-period other comprehensive (loss) income	(12,126)	8,851	(8,093)	(1,032)
Acquisition of noncontrolling interest		(639)		(639)
Ending balance	(2,685)	4,529	(2,685)	4,529
Foreign Currency Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	9,815	(3,839)	5,738	6,425
Other comprehensive (loss) income before reclassifications, net of income tax	(12,625)	9,051	(8,548)	(1,213)
Amounts reclassified from accumulated other comprehensive income to the condensed consolidated statement of operations and comprehensive loss, net of income tax	0	0	0	0
Net current-period other comprehensive (loss) income	(12,625)	9,051	(8,548)	(1,213)
Acquisition of noncontrolling interest		(639)		(639)
Ending balance	(2,810)	4,573	(2,810)	4,573
Impact of Foreign Exchange Contracts, Net of Taxes [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(374)	156	(330)	(225)
Other comprehensive (loss) income before reclassifications, net of income tax	332	(185)	172	18
Amounts reclassified from accumulated other comprehensive income to the condensed consolidated statement of operations and comprehensive loss, net of income tax	167	(15)	283	163
Net current-period other comprehensive (loss) income	499	(200)	455	181
Acquisition of noncontrolling interest		0		0
Ending balance	$ 125	$ (44)	$ 125	$ (44)