Net Loss Per Share

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Net Loss Per Share

(2) Net Loss Per Share

The Company calculates basic earnings per share by dividing loss attributable to common stockholders by the weighted average common shares outstanding during the period, excluding common stock subject to vesting provisions. Diluted earnings per share is computed by dividing loss attributable to common stockholders by the weighted average number of common shares outstanding during the period increased to include, if dilutive, the number of additional common shares that would have been outstanding if the potential common shares had been issued. The Company’s potentially dilutive shares include stock options, restricted stock units and warrants for common stock.

Because we reported a net loss for the three months ended March 31, 2015 and 2014, all potentially dilutive shares of common stock have been excluded from the computation of the dilutive net loss per share for all periods presented.  As of March 31, 2015, none of the outstanding warrants were in-the-money and no material outstanding stock options were in-the-money, other than the options granted in the first quarter of 2015.Such potentially dilutive shares of common stock consist of the following:

	Three Months Ended March 31,
	2015		2014
Potentially dilutive securities, excluded:
Outstanding stock options		1,190,112		1,043,494
Unvested restricted stock units		627,024		610,700
Warrants to purchase common stock		9,371,002		9,380,127
		11,188,138		11,034,321