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Commitments and Contingencies (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Aug. 27, 2011
Aug. 27, 2011
Soracaba Brazil [Member]
Aug. 27, 2011
Asbestos Related Lawsuits And Claims [Member]
Aug. 28, 2010
Asbestos Related Lawsuits And Claims [Member]
Aug. 27, 2011
Group Settlement Asbestos Related Lawsuits And Claims [Member]
Nov. 27, 2010
Group Settlement Asbestos Related Lawsuits And Claims [Member]
Dec. 01, 2007
Group Settlement Asbestos Related Lawsuits And Claims [Member]
Environmental Remediation Obligations [Line Items]              
Total environmental reserve $ 2,253 $ 1,013          
Product Liability Contingency [Line Items]              
Lawsuits and claims settled     5 3      
Settlement amounts     390 448      
Insurance receivable     559   376 510 2,043
Loss contingency accrual product liability     811   590 800 4,114
Loss contingency accrual payments         210 1,674  
Loss contingency payments by insurers         134 892  
Insurance Payments Received Or Expected To Be Received     $ 305 $ 359