Net Loss per Common Share Applicable to Common Stockholders

3 Months Ended

Mar. 31, 2013

Net Loss per Common Share Applicable to Common Stockholders [Abstract]

Net Loss per Common Share Applicable to Common Stockholders

(9) Net Loss per Common Share Applicable to Common Stockholders

For the three months ended March 31, 2013 and 2012, basic and diluted net loss per common share applicable to common stockholders is computed using the weighted average number of shares of common stock outstanding during the period. Diluted net loss per common share applicable to common stockholders is the same as basic net loss per common share applicable to common stockholders as the effects of the Company’s potential common stock equivalents are antidilutive. Total antidilutive securities were 33,037,104 and 16,018,566 for the three months ended March 31, 2013 and 2012, respectively, and consist of stock options, preferred stock and warrants.

For the three months ended March 31, 2013, net loss per common share applicable to common stockholders reflects $279,000 in dividends payable on shares of our Series D preferred stock that were issued in November 2011 and our Series E preferred stock that were issued in November 2012. For the three months ended March 31, 2012, net loss per common share applicable to common stockholders reflects $160,000 in dividends payable on shares of our Series D preferred stock that were issued in November 2011.