Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Basic and Diluted Net Loss Per Share

A reconciliation of the numerators and denominators used in computing net loss from continuing operations per share is as follows (in thousands, except per share amounts):

	Three Months Ended March 31,
	2019		2018
Numerator:
Net loss from continuing operations	$	(35,202)	$	(30,180)
Denominator:
Shares used in per share calculation	42,236		34,841
Net loss from continuing operations per share, basic and diluted	$	(0.83)	$	(0.87)

Schedule of Antidilutive Securities Excluded from Computation of Diluted Net Loss per Share

The following table presents the potential shares of common stock outstanding that were excluded from the computation of diluted net loss from continuing operations per share for the periods presented because including them would have been anti-dilutive (in thousands):

	Three Months Ended March 31,
	2019	2018
Shares subject to outstanding common stock options	3,716	3,478
Shares subject to outstanding restricted stock units	295	266
Shares subject to outstanding warrants to purchase common stock	28	38
Total	4,039	3,782