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Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $)
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3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
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Sep. 30, 2012
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Sep. 30, 2011
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Sep. 30, 2012
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Sep. 30, 2011
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| Statement Of Other Comprehensive Income [Abstract] | ||||
| Net Loss | $ (10,325,464) | $ (6,290,546) | $ (23,388,120) | $ (20,286,414) |
| Other comprehensive (loss) income: | ||||
| Foreign currency translation gain (loss) | 110,625 | (160,205) | 106,585 | (74,173) |
| Unrealized gain on available-for-sale securities | 18,502 | |||
| Comprehensive Loss | $ (10,214,839) | $ (6,450,751) | $ (23,281,535) | $ (20,342,085) |