Inventories

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consisted of the following:

	March 31, 2019			March 31, 2018			Dec. 31, 2018
	(Dollars in thousands)
Raw materials	$	244,859		$	230,847		$	288,860
Work-in-process	135,685			133,271			123,574
Finished goods	418,702			449,133			335,180
Other	12,850			12,858			13,075
	812,096			826,109			760,689
Adjustment to value inventory    at cost on the LIFO method	(125,883		)	(82,823		)	(125,883		)
	$	686,213		$	743,286		$	634,806