Cap rate on a foreign currency derivative for example, but not limited to, a cap or a collar.

No definition available.

Name:	us-gaap_DerivativeExchangeRateCap1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Floor rate on a foreign currency derivative for example, but not limited to, a floor or a collar.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeExchangeRateFloor1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959

+ Details

Name:	us-gaap_DerivativeGainLossOnDerivativeNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

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

- Definition

Nominal mass used to calculate payments on a derivative instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeNonmonetaryNotionalAmountMass
Namespace Prefix:	us-gaap_
Data Type:	num:massItemType
Balance Type:	na
Period Type:	duration

- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

+ Details

Name:	us-gaap_DerivativeNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

+ Details

Name:	us-gaap_UnrealizedGainLossOnDerivatives
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=stkl_ForwardForeignCurrencyContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=stkl_ForeignCurrencyPutAndCallOptionContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=stkl_AdditionPutAndCallOptionContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TradingActivityByTypeAxis=stkl_CocoaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=stkl_FutureAndForwardContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TradingActivityByTypeAxis=stkl_CoffeeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=stkl_ForwardForeignExchangeContractsToSellSwissFrancsToBuyUSDollarsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=stkl_ForwardForeignExChangeContractsToSellEurosToBuyUsDollarsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=stkl_ForwardForeignExchangeContractsToSellBritishPoundsToBuyEurosMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Derivative Financial Instruments and Fair Value Measurements (Narrative) (Details) $ in Thousands, € in Millions, £ in Millions, SFr in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 26, 2020 USD ($)	Sep. 28, 2019 USD ($)	Sep. 26, 2020 USD ($) T	Sep. 28, 2019 USD ($)	Dec. 28, 2019 T	Sep. 26, 2020 CHF (SFr)	Sep. 26, 2020 EUR (€)	Sep. 26, 2020 GBP (£)	Sep. 26, 2020 USD ($)	Apr. 30, 2020 USD ($)
Derivative [Line Items]
Unrealized gain (loss) on derivative contracts	$ (629)	$ (865)	$ (779)	$ (577)
Not designated as hedging instruments [Member] \| Forward Foreign Currency Contracts [Member]
Derivative [Line Items]
Derivative instruments gain (loss) recognized in income net	(600)	100	$ (600)	(300)
Not designated as hedging instruments [Member] \| Foreign currency put and call option contracts (a zero-cost collar) [Member]
Derivative [Line Items]
Derivative notional amount									$ 5,800	$ 21,500
Collar ceiling rate of Mexican pesos to US dollar										25.23
Floor rate of Mexican pesos to US dollar										23.50
Not designated as hedging instruments [Member] \| Addition put and call option contracts [Member]
Derivative [Line Items]
Derivative notional amount									$ 11,800
Collar ceiling rate of Mexican pesos to US dollar						24.00	24.00	24.00	24.00
Floor rate of Mexican pesos to US dollar						21.14	21.14	21.14	21.14
Not designated as hedging instruments [Member] \| Cocoa [Member] \| Future And Forward Contracts [Member]
Derivative [Line Items]
Derivative nonmonetary notional amount \| T			5,810		3,210
Not designated as hedging instruments [Member] \| Coffee [Member] \| Future And Forward Contracts [Member]
Derivative [Line Items]
Derivative nonmonetary notional amount \| T			0		306
Not designated as hedging instruments [Member] \| Recurring basis [Member]
Derivative [Line Items]
Unrealized gain (loss) on derivative contracts	$ (600)	$ (900)	$ (800)	$ (600)
Not designated as hedging instruments [Member] \| Recurring basis [Member] \| Forward Foreign Exchange Contracts To Sell Swiss Francs To Buy U. S. Dollars [Member]
Derivative [Line Items]
Derivative notional amount						SFr 3.0			$ 3,100
Not designated as hedging instruments [Member] \| Recurring basis [Member] \| Forward Foreign Exchange Contracts To Sell Euros To Buy U.S. Dollars [Member]
Derivative [Line Items]
Derivative notional amount							€ 22.3		$ 25,400
Not designated as hedging instruments [Member] \| Recurring basis [Member] \| Forward Foreign Exchange Contracts To Sell British Pounds To Buy Euros [Member]
Derivative [Line Items]
Derivative notional amount							€ 0.2	£ 0.2