Net Loss per Share

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Net Loss per Share

(4) Net Loss per Share

Basic earnings per share is computed based upon the net loss available to common stock stockholders divided by the weighted average number of common stock shares outstanding during the period. The dilutive effect of common stock equivalents is included in the calculation of diluted earnings per share only when the effect of the inclusion would be dilutive. For the six months ended June 30, 2013 and 2012, approximately 874,000 and 773,000 common stock equivalent shares associated with our stock option plans and unvested restricted shares, respectively, and approximately 1.1 million and 1.4 million common stock equivalent shares associated with our warrants, respectively were excluded from the denominator in the diluted loss per share calculation, as their inclusion would have been antidilutive due to our net loss incurred during the periods presented.