Inventories (Tables)

6 Months Ended

Jun. 26, 2020

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories on the Consolidated Balance Sheets are summarized as follows:

	June 26,		December 31,
(Thousands)	2020		2019
Raw materials and supplies	$	54,720	$	35,612
Work in process	172,678		177,780
Finished goods	30,304		25,506
Subtotal	$	257,702	$	238,898
Less: LIFO reserve balance	47,855		48,508
Inventories	$	209,847	$	190,390