Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Inventory, Net [Abstract]
Raw materials	$ 347,674	$ 333,551
Work in progress	145,952	135,624
Finished Goods	467,199	443,032
Subtotal	960,825	912,207
Inventory reserves	(110,995)	(109,312)
Total	$ 849,830	$ 802,895