Shareholders' Equity - Changes in Accumulated Other Comprehensive Income (Loss) Balances (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance as of December 31, 2015	$ (62,492)
Reclassification to the income statement	4,643
Change in fair value	(25,988)
Balance as of December 31, 2016	(83,837)
Foreign currency contracts
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance as of December 31, 2015	(64,360)
Change in fair value	(19,773)
Balance as of December 31, 2016	(84,133)
Cash Flow Hedging
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance as of December 31, 2015	1,868
Reclassification to the income statement	4,643
Change in fair value	(6,215)
Balance as of December 31, 2016	$ 296