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Inventory (Details) (USD $)
Jun. 30, 2014
Dec. 31, 2013
Inventory    
Raw material and supplies $ 2,896,445 $ 2,640,842
Work in process 254,016 339,581
Finished goods 14,457,288 15,753,871
Inventory 17,607,749 18,734,294
Reserve for inventory obsolescence $ 141,000 $ 124,000