Effect of Derivative Instruments (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized in Other Comprehensive Income (OCI)		$ 13,600	$ 15,900	$ (2,400)
Forward Foreign Currency Exchange Contracts | Derivatives Designated As Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized in Other Comprehensive Income (OCI)	[1]	17,300	18,078	(1,366)
Net gain (loss) reclassified from accumulated OCI into income	[2]	19,604	643	49
Net gain (loss) recognized in net loss	[3]	(727)	(294)	310
Forward Foreign Currency Exchange Contracts | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized in net loss	[4]	$ 4,493	$ 8,010	$ (2,041)

[1] Net change in the fair value of the effective portion classified as OCI.

[2] Effective portion classified as net product revenues.

[3] Ineffective portion and amount excluded from effectiveness testing classified as SG&A expense

[4] (1) Classified as selling, general and administrative expense.