Net Loss Per Common Share

12 Months Ended

Dec. 31, 2014

Net Loss Per Common Share

Net Loss Per Common Share

15. Net Loss Per Common Share

        Basic net loss per share is calculated by dividing net loss by the weighted-average number of common shares outstanding during the period, without consideration for common stock equivalents. Diluted net loss per share is computed by dividing net loss by the weighted-average number of common share equivalents outstanding for the period determined using the treasury-stock method. For purposes of this calculation, convertible preferred stock, convertible debt, warrants for preferred stock and stock options are considered to be common stock equivalents and are only included in the calculation of diluted net loss per share when their effect is dilutive. Interest expense for convertible debt that is dilutive is added back to net income in the calculation of diluted net loss per share.

        The shares outstanding at the end of the respective periods presented below, after giving effect for the 1-for-6.986 reverse stock split, were excluded from the calculation of diluted net loss per share due to their anti-dilutive effect:

	December 31, 2014		December 31, 2013
Warrants for common stock		285,920		277,690
Common shares under option		1,729,586		1,401,101
Unvested restricted stock		9,551		16,703
Total potential dilutive shares		2,025,057		1,695,494