Stockholder's Equity - Components of Accumulated Other Comprehensive Income (Loss) Reclassified (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		$ (93,955)	$ (97,808)
Other comprehensive income (loss) before reclassification		17,196	(38,720)
Amounts reclassified from AOCI		10,270	19,838
Net current period other comprehensive income (loss)		27,466	(18,882)
Ending Balance		(66,489)	(116,690)
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		(29,925)	(15,212)
Other comprehensive income (loss) before reclassification		(3,343)	(2,042)
Net current period other comprehensive income (loss)		(3,343)	(2,042)
Ending Balance		(33,268)	(17,254)
Unrealized holding gain (loss) on investments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		247	241
Other comprehensive income (loss) before reclassification		5	12
Net current period other comprehensive income (loss)		5	12
Ending Balance		252	253
Gain (loss) on derivatives[Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	[1]	(64,277)	(82,837)
Other comprehensive income (loss) before reclassification	[1]	20,534	(36,690)
Amounts reclassified from AOCI	[1],[2]	10,270	19,838
Net current period other comprehensive income (loss)	[1]	30,804	(16,852)
Ending Balance	[1]	$ (33,473)	$ (99,689)

[1] Refer to Note 9 for additional details.

[2] Reclassified to Cost of operations and Gain on foreign currency, net.