Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventories [Abstract]

Schedule Of Inventory Costs

			December 31,
(in thousands)			2017		2016
	Raw materials	$	258,228	$	233,111
	Work in process		108,535		113,496
	Finished goods		30,418		34,727
		$	397,181	$	381,334