Income taxes (Tables)

12 Months Ended

Dec. 30, 2017

Schedule Of Earnings And Provision Recovery Of Income Taxes [Table Text Block]

The recovery of income taxes differs from the amount that would have resulted from applying the combined Canadian federal and provincial statutory income tax rate to loss from continuing operations before income taxes due to the following:

		December 30, 2017	December 31, 2016	January 2, 2016
		$	$	$
Loss from continuing operations before income taxes		(170,397)	(74,361)	(6,522)
Canadian statutory rate		26.5%	26.5%	26.5%
Income tax recovery at statutory rate		(45,155)	(19,706)	(1,728)
Impact of changes in enacted tax rates⁽¹⁾		(8,437)	90	(208)
Foreign tax rate differential		(9,324)	(11,329)	(3,097)
Change in unrecognized tax benefits		(452)	(1,268)	(855)
Goodwill impairment loss		30,475	6,841	-
Impact of stock-based compensation and other non-
	deductible expenses	1,590	1,238	1,470
Change in valuation allowance		72	(267)	4,015
Impact of non-deductible acquisition expenses		-	-	910
Impairment loss on investment		-	-	(4,029)
Other		(4,598)	604	132
Recovery of income taxes		(35,829)	(23,797)	(3,390)

The components of loss from continuing operations before income taxes are shown below:

		December 30, 2017	December 31, 2016	January 2, 2016
		$	$	$
Canada		(3,286)	9,811	6,038
U.S.		(178,033)	(93,941)	(20,028)
Other		10,922	9,769	7,468
		(170,397)	(74,361)	(6,522)

The components of the provision for (recovery of) income taxes are shown below:

		December 30, 2017	December 31, 2016	January 2, 2016
		$	$	$
Current income tax provision (recovery):
	Canada	(658)	3,560	-
	U.S.	(10,346)	(1,293)	(1,982)
	Other	3,074	3,664	2,300
		(7,930)	5,931	318

Deferred income tax provision (recovery):
	Canada	642	(12)	2,484
	U.S.	(28,606)	(29,463)	(5,971)
	Other	65	(253)	(221)
		(27,899)	(29,728)	(3,708)
Recovery of income taxes		(35,829)	(23,797)	(3,390)

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

Deferred income taxes of the Company are comprised of the following:

		December 30, 2017	December 31, 2016
		$	$
Differences in property, plant and equipment
	and intangible assets	(51,093)	(87,833)
Capital and non-capital losses		22,144	31,494
Tax benefit of scientific research expenditures		1,871	1,199
Tax benefit of costs incurred during share issuances		-	944
Inventory basis differences		5,193	5,761
Interest expense limitation (163j)		10,311	3,356
Other accrued reserves		5,249	10,653
		(6,325)	(34,426)
Less: valuation allowance		9,162	9,090
Net deferred income tax liability		(15,487)	(43,516)

Schedule Of Deferred Tax Assets And Liabilities By Geographic Segment [Table Text Block]

The components of the deferred income tax asset (liability) are shown below:

	December 30, 2017	December 31, 2016
	$	$
Canada	362	1,045
U.S.	(14,892)	(43,668)
Other	(957)	(893)
	(15,487)	(43,516)

Schedule Of Deferred Income Tax Valuation Allowance [Table Text Block]

The components of the deferred income tax valuation allowance are as follows:

	December 30, 2017	December 31, 2016
	$	$
Balance, beginning of year	9,090	9,347
Increase in valuation allowance	72	(267)
Foreign exchange	-	10
Balance, end of year	9,162	9,090

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

A reconciliation of the beginning and ending amount of unrecognized tax benefits (excluding interest and penalties) is presented below:

	December 30, 2017	December 31, 2016
	$	$
Balance, beginning of year	452	1,720
Reductions in tax positions of prior years	(452)	(1,268)
Balance, end of year	-	452