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Comprehensive Income Comprehensive Income
 12 Months Ended
Dec. 31, 2012
Comprehensive Income [Abstract]  
Comprehensive Income (Loss)
Comprehensive Income

Comprehensive income includes net loss adjusted for the change in net unrealized gain (loss) on short-term investments. For the years ended December 31, 2012 and 2011, the components of comprehensive income were:
 
Year Ended December 31,
 
2012 (Revised)
 
2011(Restated)
Net income (loss)
$
(14,059,539
)
 
$
29,099,579

Unrealized (loss) gain on securities
—

 
(4,067
)
Total comprehensive income (loss)
$
(14,059,539
)
 
$
29,095,512