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Inventories - Inventories Table (Details) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Inventory Disclosure [Abstract]    
Finished goods $ 26,004,042 $ 28,819,060
Work in process 186,507 71,285
Materials and supplies 2,028,333 1,401,775
Total inventories $ 28,218,883 $ 30,292,120