Document and Entity Information - USD ($)	12 Months Ended
	Dec. 26, 2015	Mar. 04, 2016	Jun. 27, 2015
Document and Entity Information
Entity Registrant Name	WINMARK CORP
Entity Central Index Key	0000908315
Document Type	10-K
Document Period End Date	Dec. 26, 2015
Amendment Flag	false
Current Fiscal Year End Date	--12-26
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 178,959,694
Entity Common Stock, Shares Outstanding		4,108,930
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY