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Inventories (Schedule of Inventory, Current) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Inventory Disclosure [Abstract]    
Finished goods and parts $ 129,995 $ 112,197
Work in process 9,561 18,635
Raw materials 11,202 35,256
Inventory, Net $ 150,758 $ 166,088