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18. Other Intangible Assets, Net (Detail) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Amortization of Intangible Assets   $ 162,256 $ 217,798
Finite-Lived Intangible Asset, Useful Life 4 years 255 days    
Impairment of Intangible Assets, Finite-lived   457,023  
Exclusive Rights of Milk Supply [Member]
     
Amortization of Intangible Assets   $ 197,524 $ 257,166