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Earnings (Loss) Per Share
12 Months Ended
Dec. 31, 2012
Earnings Per Share [Abstract]  
Earnings (Loss) Per Share
Earnings (Loss) Per Share
 
Basic earnings (loss) per share is computed by dividing net income (or loss) by the weighted average number of shares of common stock outstanding during the year. Diluted earnings (loss) per share reflects the potential dilution that could occur if options, warrants and restricted stock units to purchase common stock were exercised or converted. For purposes of this calculation, outstanding stock options, stock warrants and restricted stock units are considered common stock equivalents using the treasury stock method, and are the only such equivalents outstanding.  

For the year ended December 31, 2012, options to purchase approximately 792,000 shares of commons stock, warrants to purchase approximately 44,400 shares of common stock, and approximately 3,400 unvested restricted stock units were excluded from the calculation as their impact would be anti-dilutive.