Earnings (Loss) Per Share

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Earnings (Loss) Per Share

Earnings (Loss) Per Share

For purposes of this calculation, outstanding stock options, stock warrants, and unvested restricted stock units are considered common stock equivalents using the treasury stock method, and are the only such equivalents outstanding.  For the three months ended March 31, 2013, options to purchase approximately 774,000 shares of common stock, warrants to purchase 44,400 shares of common stock and approximately 3,100 unvested restricted stock units were excluded from the calculation as their impact would be anti-dilutive.