Inventories (Schedule of Inventory, Current) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Finished goods	$ 137,064	$ 116,667
Work in process	9,707	9,431
Raw materials	12,800	9,662
Total inventory	$ 159,571	$ 135,760