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Inventories (Schedule of Inventories, Current) (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Inventory Disclosure [Abstract]    
Raw materials and work in process $ 2,571,465us-gaap_InventoryRawMaterialsNetOfReserves $ 2,025,020us-gaap_InventoryRawMaterialsNetOfReserves
Finished goods 3,028,854us-gaap_InventoryFinishedGoodsNetOfReserves 3,697,862us-gaap_InventoryFinishedGoodsNetOfReserves
Total inventories $ 5,600,319us-gaap_InventoryNet $ 5,722,882us-gaap_InventoryNet