Inventories (Schedule Of Inventory Costs) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Inventories [Abstract]
Raw materials	$ 233,111	$ 276,470
Work in process	113,496	86,475
Finished goods	34,727	49,041
Inventories	$ 381,334	$ 411,986