Summary of Intangible Assets (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Finite lived intangible assets gross	$ 10,519,929	$ 9,418,659
Less: accumulated amortization	(1,127,314)	(465,057)
Intangible assets, net	9,392,615	8,953,602
Land use rights
Finite-Lived Intangible Assets [Line Items]
Finite lived intangible assets gross	5,209,375	4,501,882
Leasehold right
Finite-Lived Intangible Assets [Line Items]
Finite lived intangible assets gross	4,131,087	3,777,979
Licenses and permits
Finite-Lived Intangible Assets [Line Items]
Finite lived intangible assets gross	1,140,734	1,110,917
Software
Finite-Lived Intangible Assets [Line Items]
Finite lived intangible assets gross	$ 38,733	$ 27,881