Net Loss Per Share

3 Months Ended

Mar. 31, 2016

Earnings Per Share [Abstract]

Net Loss Per Share

Net Loss Per Share

We compute basic net loss per share by dividing net loss by the weighted-average number of common shares outstanding for the period. We compute diluted net loss per share giving effect to all potential dilutive common stock, including awards granted under our equity compensation plans and warrants to acquire common stock.

The following table sets forth the computation of basic and diluted net loss:

	For the Three Months Ended March 31,
	2016			2015
	(in thousands, except share and per share data)
Net loss	$	(11,226	)	$	(9,158	)
Denominator (basic and diluted):
Weighted average common shares outstanding	94,748,645			94,033,035
Net loss per share:
Basic and diluted	$	(0.12	)	$	(0.10	)

Potentially dilutive securities, including common equivalent shares in which the exercise price together with other assumed proceeds exceed the average market price of common stock for the applicable period, were not included in the calculation of diluted net loss per share as their impact would be anti-dilutive. The following weighted-average number of outstanding employee stock options, restricted stock units and restricted stock awards, warrants to purchase common stock, and shares purchased under our ESPP were excluded from the computation of diluted net loss per share:

	For the Three Months Ended March 31,
	2016	2015
Stock options outstanding	11,497,626	7,287,369
Restricted stock units and restricted stock awards	2,841,861	578,657
Common equivalent shares from stock warrants	1,045,303	2,219,671
	15,384,790	10,085,697