Inventories (Schedule Of Inventory Costs) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Inventories [Abstract]
Raw materials	$ 270,826	$ 233,111
Work in process	112,054	113,496
Finished goods	33,150	34,727
Inventories	$ 416,030	$ 381,334