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Segmented Information (Narrative) (Details) | 12 Months Ended
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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.

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- Definition Description of major customers. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition 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. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_MajorCustomersAxis=stkl_MajorCustomersMember
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