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Inventory (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Inventory Disclosure [Abstract]    
Inventory, Raw Materials, Net of Reserves $ 2,928 $ 4,717
Inventory, Finished Goods, Net of Reserves 89,885 45,861
Inventory $ 92,813 $ 50,578