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Inventory (Schedule of Inventory) (Details) (USD $)
Sep. 30, 2013
Dec. 31, 2012
Inventory [Abstract]    
Raw materials and supplies $ 8,968,730 $ 7,576,862
Work-in-process 163,997 314,321
Finished goods 635,927 659,274
Total inventory $ 9,768,654 $ 8,550,457