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Investment in Leasing Operations: Risk Concentration (Details) - customer | 12 Months Ended
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Dec. 26, 2020 | Dec. 28, 2019
Total assets |  |
Investment in leasing operations |  |
Number of customers | 0 | 0

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- 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_ConcentrationRiskLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the number of customers that individually account for 10 percent or more of the defined benchmark. + References No definition available. + Details
Name: | wina_ConcentrationRiskNumberOfCustomers
Namespace Prefix: | wina_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AssetsTotalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |