NET LOSS PER COMMON SHARE (Tables)

12 Months Ended

Dec. 31, 2017

Computation of Basic and Diluted Earnings per Common Share

The following table sets forth the computation of basic and diluted earnings per common share (in thousands of common shares):

	Years Ended December 31,
	2017			2016			2015
Numerator:
Net loss, basic	$	(117,042	)	$	(630,210	)	$	(171,799	)
Less: gain on common stock held by the NQDC		—			(3,184	)		—
Net loss, diluted		(117,042	)		(633,394	)		(171,799	)
Denominator:
Weighted-average common shares outstanding, basic		174,427			165,985			160,025
Effect of dilutive securities:
Common stock held by the NQDC		—			234			—
Weighted-average common shares outstanding, diluted		174,427			166,219			160,025
Net loss per common share, basic	$	(0.67	)	$	(3.80	)	$	(1.07	)
Net loss per common share, diluted	$	(0.67	)	$	(3.81	)	$	(1.07	)

Schedule Of Anti-Dilutive Common Stock Excluded From Computation of Basic and Diluted Net Loss Per Share

The table below presents potential shares of common stock that were excluded from the computation of basic and diluted earnings per common share as they were anti-dilutive using the if-converted or treasury stock method (in thousands):

	Years Ended December 31,
	2017		2016		2015
Options to purchase common stock		8,108		8,856		10,323
Common stock issuable under the 2017 Notes		—		1,105		1,544
Common stock issuable under the 2018 Notes		3,983		3,983		3,983
Common stock issuable under the 2020 Notes		3,983		3,983		3,983
Common stock issuable under the 2024 Notes		3,970		—		—
Unvested restricted stock units		2,911		2,618		1,743
Common stock potentially issuable for ESPP purchases		436		404		312
Common stock held by the NQDC		220		—		243
Total number of potentially issuable shares		23,611		20,949		22,131