Inventories

9 Months Ended

Sep. 30, 2020

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consisted of the following: 

	Sept. 30, 2020		Sept. 30, 2019		Dec. 31, 2019
	(Dollars in thousands)
Raw materials	$	294,896	$	275,015	$	286,953
Work-in-process	154,157		127,590		134,417
Finished goods	370,406		413,864		355,337
Other	15,217		12,620		12,793
	834,676		829,089		789,500
Adjustment to value inventory at cost on the LIFO method	(156,495)		(125,883)		(156,495)
	$	678,181	$	703,206	$	633,005