Inventories (Tables)

12 Months Ended

Dec. 31, 2015

Inventory Disclosure [Abstract]

Inventories

The components of inventories at December 31 were as follows:

	2015			2014
	(Dollars in thousands)
Raw materials	$	215,018		$	184,714
Work-in-process	118,947			115,308
Finished goods	371,561			338,562
Other	13,938			13,541
	719,464			652,125
Adjustment to value inventory at cost on the LIFO method	(91,326		)	(103,360		)
	$	628,138		$	548,765