Inventories, Net (Tables)

3 Months Ended

Mar. 28, 2020

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories are summarized as follows:

	March 28, 2020			December 28, 2019
Raw materials	$	34,606		$	32,377
Work-in-process	16,207			18,642
Finished goods	66,224			64,978
Supplies and other	225			260
LIFO reserve	(19,035		)	(20,748		)
Inventories, net	$	98,227		$	95,509