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Components of the calculations of basic and diluted earnings per share (Details) (USD $)
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12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Components of the calculations of basic and diluted earnings per share {1} | |||
| Net lossses attributable to common shareholders | $ (62,790,800) | $ (31,862,454) | $ (27,453,954) |
| Weighted average number of common shares outstanding | 76,436,408 | 34,376,427 | 18,778,066 |