Inventories, Net (Tables)

12 Months Ended

Dec. 28, 2019

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories are summarized as follows:

	2019			2018
Raw materials	$	32,377		$	36,875
Work-in-process	18,642			20,274
Finished goods	64,978			67,085
Supplies and other	260			190
LIFO reserve	(20,748		)	(19,229		)
Inventories, net	$	95,509		$	105,195