|
Earnings Per Share (Details) (USD $)
|
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2012
|
Jun. 30, 2011
|
Jun. 30, 2012
|
Jun. 30, 2011
|
|
| Numerator | ||||
| Net loss | $ (6,479,554) | $ (6,752,668) | $ (13,062,656) | $ (13,995,868) |
| Denominator | ||||
| Weighted average number of common shares outstanding (in shares) | 37,853,358 | 16,320,235 | 30,645,479 | 14,781,215 |