Inventories

3 Months Ended

Mar. 28, 2020

Inventory Disclosure [Abstract]

Inventories [Text Block]

6.  Inventories

	March 28, 2020		December 28, 2019
	$		$
Raw materials and work-in-process	231,723		259,658
Finished goods	54,560		75,112
Inventory reserves	(13,808	)	(11,224	)
	272,475		323,546