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Inventories (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Summary of inventory    
Finished Goods $ 2,466,829us-gaap_InventoryFinishedGoodsNetOfReserves $ 1,186,376us-gaap_InventoryFinishedGoodsNetOfReserves
Component parts and other materials 30,270us-gaap_InventoryWorkInProcessNetOfReserves 135,276us-gaap_InventoryWorkInProcessNetOfReserves
Total $ 2,497,099us-gaap_InventoryNet $ 1,321,652us-gaap_InventoryNet