Inventories (Tables)

6 Months Ended

Jun. 30, 2020

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of the following: 

	June 30, 2020		June 30, 2019		Dec. 31, 2019
	(Dollars in thousands)
Raw materials	$	298,550	$	271,396	$	286,953
Work-in-process	165,505		141,268		134,417
Finished goods	499,799		523,145		355,337
Other	14,089		12,658		12,793
	977,943		948,467		789,500
Adjustment to value inventory at cost on the LIFO method	(156,495)		(125,883)		(156,495)
	$	821,448	$	822,584	$	633,005