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Summary of Significant Accounting Policies (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Reconciliation of the numerators and denominators of the basic and diluted earnings per share computations        
Net income (loss) $ 833,522 $ (4,035,193) $ (9,395,917) $ (9,782,428)
Weighted average shares outstanding used to compute basic and diluted net income or loss per share 24,806,769 13,802,372 23,882,634 13,741,481
Basic and diluted net income (loss) per share $ 0.03 $ (0.29) $ (0.39) $ (0.71)