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Inventories (Schedule of Inventory, Current) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Inventory Disclosure [Abstract]    
Finished goods and parts $ 112,197us-gaap_InventoryFinishedGoodsNetOfReserves $ 84,548us-gaap_InventoryFinishedGoodsNetOfReserves
Work in process 18,635us-gaap_InventoryWorkInProcessNetOfReserves 9,906us-gaap_InventoryWorkInProcessNetOfReserves
Raw materials 35,256us-gaap_InventoryRawMaterialsNetOfReserves 14,650us-gaap_InventoryRawMaterialsNetOfReserves
Inventory, Net $ 166,088us-gaap_InventoryNet $ 109,104us-gaap_InventoryNet