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Subsequent Events (Details) - 2019 Tender Offer - Subsequent Event $ / shares in Units, $ in Millions | Feb. 28, 2019 USD ($) $ / shares shares
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Subsequent Events |
Shares authorized for repurchase per tender offer | shares | 150,000
Shares authorized for repurchase per tender offer, as a percentage of oustanding common stock | 3.80%
Price per share of common stock per tender offer | $ / shares | $ 159.63
Aggregate purchase price of shares per tender offer | $ | $ 23.9

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- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The expected value of the stock to be repurchased per the tender offer. + References No definition available. + Details
Name: | wina_StockRepurchaseTenderOfferAmount
Namespace Prefix: | wina_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The price per share of common stock per the tender offer. + References No definition available. + Details
Name: | wina_StockRepurchaseTenderOfferPricePerShare
Namespace Prefix: | wina_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of shares expected to be repurchased per the tender offer, expressed as a percentage of the outstanding common stock. + References No definition available. + Details
Name: | wina_StockRepurchaseTenderOfferSharesAsPercentageOfOutstandingCommonStock
Namespace Prefix: | wina_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=wina_TenderOffer2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |