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Inventory (Details) (USD $)
Sep. 30, 2012
Dec. 31, 2011
Dec. 31, 2010
Inventory Disclosure [Abstract]      
Raw materials and supplies $ 9,479,058 $ 9,159,004  
Work-in-process 18,584 462,832  
Finished goods 3,507,478 732,871  
Inventory $ 13,005,120 [1] $ 10,354,707 $ 10,539,116
[1] (Unaudited)