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Inventories (Details) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Inventories [Abstract]    
Finished goods $ 8,737,862 $ 9,574,685
Work in process 568,215 554,129
Packaging materials 1,028,017 991,157
Raw materials 2,918,128 2,550,617
Total inventory $ 13,252,222 $ 13,670,588