Basic and Diluted Net Loss per Share

12 Months Ended

Dec. 31, 2013

Basic and Diluted Net Loss Per Share [Abstract]

Basic and Diluted Net Loss per Share

17. Basic and Diluted Net Loss per Share

Basic net loss per common share is computed by dividing net loss attributable to common stockholders by the weighted average number of common shares outstanding during the period. Diluted net loss per common share is computed giving effect to all dilutive potential common shares that were outstanding during the period. Diluted potential common shares consist of incremental shares issuable upon exercise of stock options and warrants and conversion of preferred stock. In computing diluted net loss per share for the years ended December 31, 2013 and 2012, no adjustment has been made to the weighted average outstanding common shares as the assumed exercise of outstanding options and warrants and conversion of preferred stock would be anti-dilutive.

Potential common shares not included in calculating diluted net loss per share are as follows:

	December 31,
	2013	2012
Stock options	19,114,436	12,922,766
Stock warrants	6,426,968	1,397,939
Nonvested Restricted stock units	1,050,000
Total	26,591,404	14,320,705