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

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).

No definition available.

Name:	wina_DeferredTaxPaymentsUnderCoronavirusAidReliefAndEconomicSecurityAct
Namespace Prefix:	wina_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant