XML 25 R1.htm IDEA: XBRL DOCUMENT v3.20.2
Document and Entity Information - USD ($)
 12 Months Ended
Aug. 29, 2020
Oct. 22, 2020
Feb. 29, 2020
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Aug. 29, 2020    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Registrant Name UNIFIRST CORPORATION    
Entity Central Index Key 0000717954    
Current Fiscal Year End Date --08-29    
Entity Filer Category Large Accelerated Filer    
Title of 12(b) Security Common Stock, $0.10 par value per share    
Trading Symbol UNF    
Security Exchange Name NYSE    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer Yes    
Entity Interactive Data Current Yes    
Entity Emerging Growth Company false    
Entity Small Business false    
Entity Shell Company false    
Entity File Number 001-08504    
Entity Tax Identification Number 04-2103460    
Entity Address, Address Line One 68 Jonspin Road    
Entity Address, City or Town Wilmington    
Entity Address, State or Province MA    
Entity Incorporation, State or Country Code MA    
Entity Address, Postal Zip Code 01887    
City Area Code (978)    
Local Phone Number 658-8888    
Document Annual Report true    
Document Transition Report false    
Entity Public Float     $ 2,782,540,590
Documents Incorporated by Reference

Documents Incorporated By Reference

The Registrant intends to file a Definitive Proxy Statement pursuant to Regulation 14A promulgated under the Securities Exchange Act of 1934, as amended, for its 2021 Annual Meeting of Shareholders within 120 days of the end of the fiscal year ended August 29, 2020. Portions of such Proxy Statement are incorporated by reference in Part III of this Annual Report on Form 10-K.

   
Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   15,254,349  
Class B Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   3,643,009