Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Inventory, Net [Abstract]
Raw materials	$ 355,772	$ 333,551
Work in progress	152,287	135,624
Finished goods	426,738	443,032
Subtotal	934,797	912,207
Inventory reserves	(106,511)	(109,312)
Total	$ 828,286	$ 802,895