Bank indebtedness and long-term debt (Tables)

12 Months Ended

Dec. 29, 2018

Short-term Debt [Abstract]

Schedule of Line of Credit Facilities [Table Text Block]

			December 29, 2018	December 30, 2017
			$	$
Bank indebtedness:
	Global Credit Facility(1)		276,776	230,502
	Bulgarian credit facility(2)		3,558	3,588
			280,334	234,090
Long-term debt:
	Senior Secured Second Lien Notes, net of unamortized debt issuance costs
		of $6,472 (December 30, 2017 - $7,716)(3)	217,026	215,782
	Asset-backed term loan(4)		3,103	3,600
	Capital lease obligations(5)		3,706	5,651
	Other		5,028	3,000
			228,863	228,033
	Less: current portion		1,840	2,228
			227,023	225,805

Schedule of Maturities of Long-term Debt [Table Text Block]

Principal repayments of long-term debt are as follows:

	$
2019	1,840
2020	4,280
2021	2,598
2022	224,635
2023	516
Thereafter	1,466
Total gross repayments	235,335
Unamortized debt issuance costs	(6,472)
	228,863

Schedule Of Interest Expense And Interest Income Table [Text Block]

	December 29, 2018	December 30, 2017	December 31, 2016
	$	$	$
Interest expense	32,155	29,771	32,090
Amortization of debt issuance costs	2,536	2,825	11,301
Interest income	(285)	(92)	(116)
Interest expense, net	34,406	32,504	43,275