Inventories

3 Months Ended

Mar. 31, 2023

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consisted of the following: 

	March 31, 2023		March 31, 2022		Dec. 31, 2022
	(Dollars in thousands)
Raw materials	$	498,580	$	295,713	$	409,349
Work-in-process	254,373		263,878		218,691
Finished goods	630,233		607,087		469,212
Other	16,205		14,787		16,463
	1,399,391		1,181,465		1,113,715
Adjustment to value inventory at cost on the LIFO method	(344,312)		(162,780)		(344,312)
	$	1,055,079	$	1,018,685	$	769,403