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Series B-1 Preferred Stock (Narrative) (Details) $ / shares in Units, $ in Millions | 9 Months Ended
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Sep. 27, 2025 USD ($) $ / shares shares
Series B-1 Preferred Stock [Member] | Oaktree and Engaged [Member] |
Temporary Equity [Line Items] |
Preferred stock, shares issued | shares | 15,000
Preferred stock, liquidation preference, value | $ | $ 15.2
Preferred stock, liquidation preference per share | $ / shares | $ 1,015
Preferred stock, dividend payment terms | On April 17, 2024, the Company, SunOpta Foods and Oaktree entered into an Amending Agreement related to the elimination of the dividend rights attached to the Series B-1 Preferred Stock effective from and after December 31, 2023. The Series B-1 Preferred Stock previously paid a cumulative dividend of 8.0% per year that could be paid in-kind or in cash at the Company's option.
Series B-1 Preferred Stock [Member] | Oaktree [Member] |
Temporary Equity [Line Items] |
Preferred stock, convertible, terms | At any time, Oaktree may exchange the Series B-1 Preferred Stock, in whole or in part, into the number of common shares of the Company equal to, per share of Series B-1 Preferred Stock, the quotient of the liquidation preference divided by the exchange price of $2.50, while, at any time, SunOpta Foods may cause Oaktree to exchange all of their shares of Series B-1 Preferred Stock if the volume-weighted average price of the common shares during the then preceding 20 trading day period is greater than 200% of the exchange price then in effect.
Preferred stock, redemption terms | In addition, as of April 24, 2025, SunOpta Foods may redeem all of the Series B-1 Preferred Stock at any time for an amount per share equal to the value of the liquidation preference at such time.
Preferred stock, conversion price | $ / shares | $ 2.5
Special Shares, Series 2 [Member] | Oaktree [Member] |
Temporary Equity [Line Items] |
Preferred stock, shares issued | shares | 2,932,453
Limit of voting rights | 19.99%

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