Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Computation of Basic and Diluted Earnings Per Share) (Details)

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Earnings Per Share (Computation of Basic and Diluted Earnings Per Share) (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Earnings Per Share [Abstract]        
Net loss $ (11,306,207) $ (9,098,600) $ (28,947,577) $ (21,922,494)
Preferred stock dividends 0 (25,000) 0 (75,000)
Net loss attributable to common stockholders $ (11,306,207) $ (9,123,600) $ (28,947,577) $ (21,997,494)
Weighted average shares outstanding (basic and diluted), in shares 121,117,562 102,332,983 117,740,754 97,042,832
Loss per common share (basic and diluted), in dollars per share $ (0.09) $ (0.09) $ (0.25) $ (0.23)