Inventories (Tables)

12 Months Ended

Jan. 02, 2021

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

	January 2, 2021		December 28, 2019
	$		$
Raw materials and work-in-process	78,210		89,562
Finished goods	75,280		72,135
Inventory reserve	(5,742	)	(8,135	)
	147,748		153,562

Schedule Of Inventory Reserve [Table Text Block]

	January 2, 2021		December 28, 2019
	$		$
Balance, beginning of year	8,135		7,654
Additions to reserve during the year	3,081		10,011
Reserves applied and inventories written off during the year	(5,474	)	(9,530	)
Balance, end of year	5,742		8,135