Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2017

Supplemental Cash Flow Elements [Abstract]

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

		Quarter ended		Three quarters ended
		September 30, 2017	October 1, 2016	September 30, 2017	October 1, 2016
		$	$	$	$
Changes in non-cash working capital:
	Accounts receivable	5,113	(22,302)	12,754	(56,049)
	Inventories	15,100	5,150	9,187	(34,760)
	Income tax recoverable/payable	(552)	9,423	(5,351)	14,807
	Prepaid expenses and other current assets	(6,695)	(1,985)	(16,241)	(2,591)
	Accounts payable and accrued liabilities	(30,455)	10,999	(23,760)	21,943
	Customer and other deposits	(517)	(449)	(1,908)	(4,293)
		(18,006)	836	(25,319)	(60,943)