Net Loss Per Share

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Net Loss Per Share

Net Loss Per Share

The following table sets forth the computation of basic and diluted net loss per share of common stock attributable to common stockholders:

	Three Months Ended
	March 31,
	2015			2014
	(in thousands, except per-share data)
Net Loss	$	(10,593	)	$	(2,906	)
Weighted average common shares outstanding — Basic	42,039			33,715
Plus incremental shares from assumed conversions:
Dilutive effect of stock options	—			—
Weighted average common shares outstanding — Diluted	42,039			33,715
Net loss per share:
Basic	$	(0.25	)	$	(0.09	)
Diluted	$	(0.25	)	$	(0.09	)

Incremental shares from stock options and restricted stock awards are computed by the treasury stock method. The weighted average shares listed below were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive for the periods presented or were otherwise excluded under the treasury stock method. The treasury stock method calculates dilution assuming the exercise of all in-the-money options and vesting of restricted stock, reduced by the repurchase of shares with the proceeds from the assumed exercises, unrecognized compensation expense for outstanding awards and the estimated tax benefit of the assumed exercises.

	Three Months Ended
	March 31,
	2015	2014
	(in thousands)
Stock options	6,615	5,664
Warrants	31	51
Unvested restricted stock awards	6	4
Total	6,652	5,719