15. NET LOSS PER SHARE

Basic net loss per share is computed by dividing net loss by the weighted-average number of shares of common stock outstanding. Diluted net loss per share is computed by dividing net loss by the weighted-average number of shares of common stock and dilutive common stock equivalents outstanding. For the three and nine months ended September 30, 2018 and 2017, there were no differences between basic and diluted net loss per share since the effect of common stock equivalents would be anti-dilutive due to the net loss position and, therefore, would be excluded from the diluted net loss per share calculation.

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2018			2017			2018			2017
	(in thousands, except per share amounts)
Net loss	$	(76,393	)	$	(47,734	)	$	(221,023	)	$	(26,690	)
Weighted-average number of shares of common stock and common stock equivalents outstanding:
Weighted-average number of shares of common stock outstanding for computing basic loss earnings per share		66,209			61,528			65,454			57,166
Dilutive effect of outstanding stock awards and stock options after application of the treasury stock method*		—			—			—			—
Weighted-average number of shares of common stock and dilutive common stock equivalents outstanding for computing diluted loss per share		66,209			61,528			65,454			57,166
Net loss per share - basic and diluted	$	(1.15	)	$	(0.78	)	$	(3.38	)	$	(0.47	)

For the three and nine months ended September 30, 2018 and 2017, stock options, RSAs, RSUs, stock appreciation rights (“SAR”) to purchase 9.2 million and 9.8 million shares of the Company’s common stock, respectively, were excluded from the net loss per share calculation as their effect would have been anti-dilutive.