Inventories (Tables)

3 Months Ended

Mar. 27, 2020

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories on the Consolidated Balance Sheets are summarized as follows:

	March 27,		December 31,
(Thousands)	2020		2019
Raw materials and supplies	$	46,843	$	35,612
Work in process	180,123		177,780
Finished goods	26,144		25,506
Subtotal	$	253,110	$	238,898
Less: LIFO reserve balance	48,408		48,508
Inventories	$	204,702	$	190,390