Inventories (Tables)

3 Months Ended

Mar. 31, 2016

Inventory Disclosure [Abstract]

Schedule Of Inventories

nventories are comprised of the following: 

	As of December 31, 2015		As of  March 31, 2016
	(Dollars in thousands)
Inventories:
Raw materials and supplies	$	80,408	$	73,557
Work in process	136,858		133,612
Finished goods	78,196		75,101
Total	$	295,462	$	282,270