Goodwill and intangible assets (Tables)

12 Months Ended

Dec. 28, 2013

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill [Table Text Block]

				December 28, 2013	December 29, 2012
				$	$
Goodwill				53,673	57,414
Intangible assets with a finite life at cost, less accumulated
	amortization of $29,033 (December 29, 2012 - $24,300)			47,991	52,885

The following is a summary of changes in goodwill:

					$
Balance at December 31, 2011					49,387
	Acquisitions during the year				7,892
	Impact of foreign exchange and other				135
Balance at December 29, 2012					57,414
	Goodwill impairment				(3,552)
	Impact of foreign exchange and other				(189)
Balance at December 28, 2013					53,673

Schedule of Finite-Lived Intangible Assets [Table Text Block]

The following is a summary of changes in intangible assets:

				Customer and other	Patents and
				relationships	trademarks	Other	Total
				$	$	$	$
Balance at December 31, 2011				45,369	546	2,120	48,035
	Acquisitions (see note 2)			9,347	-	-	9,347
	Additions			-	-	128	128
	Amortization			(4,163)	(101)	(669)	(4,933)
	Impact of foreign exchange			295	-	13	308
Balance at December 29, 2012				50,848	445	1,592	52,885
	Additions			-	12	170	182
	Impairment (see note 13)			(310)	-	-	(310)
	Amortization			(4,206)	(91)	(436)	(4,733)
	Impact of foreign exchange			246	-	(279)	(33)
Balance at December 28, 2013				46,578	366	1,047	47,991

Schedule of Expected Amortization Expense [Table Text Block]

					$
2014					4,718
2015					4,551
2016					4,359
2017					4,359
2018					4,324
Thereafter					25,680
					47,991