Management's Interim Financial Statement Representation: (Details)	6 Months Ended
Jun. 30, 2018 item
Minimum
Number of Weeks in Fiscal Year	52
Maximum
Number of Weeks in Fiscal Year	53

Represents the number of weeks based on which the entity reports its annual results of operations.

No definition available.

Name:	wina_NumberOfWeeksInFiscalYear
Namespace Prefix:	wina_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration