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Note 4 - Accounts Receivable (Tables)
9 Months Ended
Aug. 25, 2012
Schedule of Accounts Receivable [Table Text Block]
   
August 25, 2012
   
November 26, 2011
 
Gross accounts receivable
  $ 16,711     $ 16,848  
Allowance for doubtful accounts
    (2,243 )     (2,092 )
Accounts receivable, net
  $ 14,468     $ 14,756  
Schedule of Credit Losses for Financing Receivables, Current [Table Text Block]
   
2012
 
       
Balance at November 26, 2011
  $ 2,092  
Additions charged to expense
    417  
Write-offs and other deductions
    (266 )
Balance at August 25, 2012
  $ 2,243