Inventories (Tables)

3 Months Ended

Mar. 24, 2018

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

In thousands	March 24, 2018		December 30, 2017		March 25, 2017
Raw materials	$	3,466	$	3,462	$	4,206
Work in progress		3,346		2,927		4,068
Finished goods		33,302		28,771		28,920
	$	40,114	$	35,160	$	37,194