Sale of Soy and Corn Business (Details) - Sunopta Grains And Foods Inc [Member] - Disposal Group, Not Discontinued Operations [Member] $ in Thousands	3 Months Ended	6 Months Ended
Jun. 29, 2019 USD ($)	Jun. 29, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration	$ 66,500	$ 66,500
Transaction and related costs	(201)	(1,825)
Net proceeds	(201)	64,675
Current assets	22,810	22,810
Property, plant and equipment	8,423	8,423
Goodwill	1,526	1,526
Current liabilities	(13,462)	(13,462)
Net assets sold	19,297	19,297
Pre-tax gain (loss) on sale	$ (201)	$ 45,378

Amount of net assets sold attributable to disposal group.

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Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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