Stockholder's Equity - Components of Accumulated Other Comprehensive Income (Loss) Reclassified (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		$ (66,489)	$ (116,690)	$ (93,955)	$ (97,808)
Other comprehensive income (loss) before reclassification		(14,319)	5,337	2,877	(33,383)
Amounts reclassified from AOCI		14,933	17,329	25,203	37,167
Net current period other comprehensive income (loss)		614	22,666	28,080	3,784
Ending Balance		(65,875)	(94,024)	(65,875)	(94,024)
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		(33,268)	(17,254)	(29,925)	(15,212)
Other comprehensive income (loss) before reclassification		(4,027)	(2,701)	(7,370)	(4,743)
Amounts reclassified from AOCI			(2,243)		(2,243)
Net current period other comprehensive income (loss)		(4,027)	(4,944)	(7,370)	(6,986)
Ending Balance		(37,295)	(22,198)	(37,295)	(22,198)
Unrealized holding gain (loss) on investments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		252	253	247	241
Other comprehensive income (loss) before reclassification		12	4	17	16
Net current period other comprehensive income (loss)		12	4	17	16
Ending Balance		264	257	264	257
Gain (loss) on derivatives[Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	[1]	(33,473)	(99,689)	(64,277)	(82,837)
Other comprehensive income (loss) before reclassification	[1]	(10,304)	8,034	10,230	(28,656)
Amounts reclassified from AOCI	[1],[2]	14,933	19,572	25,203	39,410
Net current period other comprehensive income (loss)	[1]	4,629	27,606	35,433	10,754
Ending Balance	[1]	$ (28,844)	$ (72,083)	$ (28,844)	$ (72,083)

[1] Refer to Note 9 for additional details.

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