Segmented Information (Narrative) (Details)	12 Months Ended
Dec. 28, 2019
Major Customers [Member]
Segment Reporting Information [Line Items]
Major customers	For the year ended December 28, 2019, one customer accounted for approximately 11% of the Company's consolidated revenues and approximately 36% of Plant-Based Foods and Beverages segment revenues. The Company did not have any customers that exceeded 10% of total revenues for the years ended December 29, 2018 and December 30, 2017.

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration