Basic and Diluted Loss Per Common Share

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Basic and Diluted Loss Per Common Share

3. Basic and Diluted Loss Per Common Share

Basic and diluted loss per common share is computed based on the weighted average number of common shares outstanding. Loss per share excludes the impact of outstanding options and warrants and convertible preferred stock as they are antidilutive. Potential common shares excluded from the calculation at September 30, 2013 and 2012, respectively, relate to 66,238,507 and 26,042,116 from warrants, 15,322,206 and 15,140,956 from options, and 3,705,000 and 2,941,665 from convertible preferred shares.