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Income Taxes: (Details) $ in Millions | Jun. 27, 2020 USD ($)
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Income Taxes: |
Amount of deferred federal and state income tax payments under the CARES Act | $ 4.4

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

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- Definition The amount of deferred federal and state income tax payments as of the end of the reporting period, allowed under the Coronavirus Aid, Relief, and Economic Security Act (the "CARES" Act). + References No definition available. + Details
Name: | wina_DeferredTaxPaymentsUnderCoronavirusAidReliefAndEconomicSecurityAct
Namespace Prefix: | wina_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant