Discontinued Operations (Narrative) (Details) - USD ($) $ in Thousands		6 Months Ended	12 Months Ended
	Oct. 12, 2023	Jun. 29, 2024	Dec. 30, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal of frozen fruit inventory held-for-sale		$ 0	$ 5,910
Divestiture of Frozen Fruit [Member] | Asset Purchase Agreement [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration	$ 95,300
Short-term note receivable	10,500
Receivable amount in five consecutive monthly installments	2,100
Accounts payable and accrued liabilities assumed	$ 15,700
Maximum deduction from principal amount of Seller Promissory Notes		5,000	5,000
Interest rate per annum	The Seller Promissory Notes bear interest at a rate per annum equal to the Secured Overnight Financing Rate ("SOFR"), determined quarterly in advance, plus a margin of 4.00% for the first year and 7.00% for the second and third years. Interest is payable quarterly in-kind. The Seller Promissory Notes mature on October 12, 2026, and outstanding principal and accrued and unpaid interest is payable on the maturity date.
Net receivable from purchasers		500	500
Principal amount of seller promissory notes		20,000	20,000
Paid-in-kind interest		$ 1,000	$ 300
Sunrise Growers [Member] | Asset Purchase Agreement [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Principal amount of seller promissory notes	$ 15,000
SunOpta Mexico [Member] | Asset Purchase Agreement [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Principal amount of seller promissory notes	$ 5,000