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Long-term investment (Details) (Restated [Member], USD $)
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Dec. 31, 2012
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Dec. 31, 2011
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Restated [Member]
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| Shares of Common Stock in China Wood Inc. | $ 5,065,838 | $ 5,065,838 |
| Excess of fair value of purchase consideration over assets purchased | (2,798,586) | |
| Impairment loss | (2,267,252) | |
| Net value |
| X | ||||||||||
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- Definition
This item represents the aggregate value of each identified investment accounted for under the equity method of accounting based on the quoted market price for those investments in common stock for which a quoted market price is available. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Excess of fair value of purchase consideration over assets purchased. No definition available.
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| X | ||||||||||
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- Definition
Impairment loss. No definition available.
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| X | ||||||||||
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- Definition
Net value. No definition available.
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