Inventories, Net (Tables)

12 Months Ended

Dec. 29, 2018

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories are summarized as follows:

	2018			2017
Raw materials	$	36,875		$	39,264
Work-in-process	20,274			24,454
Finished goods	67,085			65,172
Supplies and other	190			143
LIFO reserve	(19,229		)	(15,376		)
Inventories, net	$	105,195		$	113,657