Commitments and contingencies (Tables)

12 Months Ended

Dec. 29, 2018

Commitments And Contingencies Disclosure [Abstract]

Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]

Minimum commitments under operating leases, principally related to manufacturing plants, warehouses, office facilities, machinery and equipment, and farmland, for the next five fiscal years and thereafter are as follows:

	2019	2020	2021	2022	2023	Thereafter	Total
	$	$	$	$	$	$	$
Operating lease obligations	19,207	17,356	14,451	12,622	8,389	47,852	119,877