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Land Use Rights, net (Amortization of Land Use Rights Attributable to Future Periods) (Detail) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]    
2014 $ 46,963  
2015 46,963  
2016 46,963  
2017 46,963  
2018 46,963  
Thereafter 2,114,633  
Total land use rights, net $ 2,349,448 $ 2,258,796