Basic and Diluted Net Profit (Loss) Per Share

6 Months Ended

Jun. 30, 2011

Basic and Diluted Net Profit (Loss) Per Share [Abstract]

Basic and Diluted Net Profit (Loss) Per Share

6. Basic and Diluted Loss Per Common Share

Basic and diluted net income (loss) per common share is computed based on the weighted-average number of common shares outstanding. Common share equivalents (which consist of options and warrants) are excluded from the computation of diluted net income (loss) per common share where the effect would be anti-dilutive.  Common share equivalents that could potentially dilute basic earnings per share in the future and that were excluded from the computation of diluted net income (loss) per share totaled approximately 19.1 million shares for each of the three-month and six-month periods ended June 30, 2011 and 13.3 million shares and 11.3 million shares, respectively, for the three-month and six-month periods ended June 30, 2010.