CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total		Common Stock	Additional Paid-in Capital	Company Common Stock Held By The NQDC	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning Balance at Dec. 31, 2015						$ 21,033
Net loss	$ (502,065)
Ending Balance at Jun. 30, 2016						4,528
Beginning Balance at Mar. 31, 2016						47
Net loss	(419,014)
Ending Balance at Jun. 30, 2016						4,528
Beginning Balance at Dec. 31, 2016	2,766,275	[1]	$ 173	$ 4,288,113	$ (14,321)	12,816	$ (1,520,506)
Beginning Balance (in shares) at Dec. 31, 2016			172,648
Net loss	(53,123)						(53,123)
Other comprehensive loss	(27,474)					(27,474)
Issuances under equity incentive plans, net of tax (in share)			1,402
Issuances under equity incentive plans, net of tax	7,331		$ 1	7,330
Issuances of common stock under the Employee Stock Purchase Plan (the ESPP)	6,704			6,704
Issuances of common stock under the Employee Stock Purchase Plan (the ESPP) (in shares)			95
Conversion of convertible notes, net	22,477		$ 1	22,476
Conversion of convertible notes, net (in shares)			1,104
Common stock held by NQDC	32				32
Stock-based compensation	73,357			73,357
Ending Balance at Jun. 30, 2017	2,795,579		$ 175	4,397,980	(14,289)	(14,658)	(1,573,629)
Ending Balance (in shares) at Jun. 30, 2017			175,249
Beginning Balance at Mar. 31, 2017						5,020
Net loss	(36,833)
Ending Balance at Jun. 30, 2017	$ 2,795,579		$ 175	$ 4,397,980	$ (14,289)	$ (14,658)	$ (1,573,629)
Ending Balance (in shares) at Jun. 30, 2017			175,249

[1] December 31, 2016 balances were derived from the audited Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016, filed with the Securities and Exchange Commission (the SEC) on February 27, 2017.