Rendering

Component: (Network and Table)
Network
076 - Disclosure - Note 11 - Commitments and Contingencies (Details) - Changes to Environmental Liabilities
(http://www.unifirst.com/role/ChangestoEnvironmentalLiabilitiesTable)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Changes to Environmental Liabilities [Abstract]Period [Axis]
2012-08-26 - 2013-08-31
2011-08-28 - 2012-08-25
Changes to Environmental Liabilities [Abstract]
 
 
Balance
20,020,000  
18,368,000  
Costs incurred for which reserves have been provided
(1,862,000) 
(1,277,000) 
Insurance proceeds received
282,000  
209,000  
Interest accretion
542,000  
631,000  
Changes in discount rates
(1,585,000) 
1,346,000  
Revisions in estimates
2,283,000  
743,000  
Balance
19,680,000  
 
20,020,000