Basic and Diluted Loss Per Common Share

9 Months Ended

Sep. 30, 2012

Basic and Diluted Loss Per Common 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, 2012 and 2011, respectively, relate to 26,042,116 and 24,575,302 from warrants, 15,140,956 and 15,390,956 from options, and 2,941,665 and 3,848,332 from convertible preferred shares.