Commitments and Contingencies (Details 2)	12 Months Ended	1 Months Ended	12 Months Ended
Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Jan. 31, 2013 Wuling Center USD ($)	Nov. 30, 2012 Wuling Center USD ($)	May 31, 2012 Wuling Center USD ($)	May 31, 2012 Wuling Center CNY	Dec. 31, 2012 Wuling Center USD ($)	Dec. 31, 2012 Wuling Center CNY
Commitments and Contingencies
Investment commitment						$ 9,500,000	60,000,000	$ 9,500,000	60,000,000
Investment commitment paid	$ 2,161,001	$ 21,567,027	$ 9,878,053	$ 500,000	$ 2,400,000

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 17

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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