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Note 5 - Accounts Receivable (Tables)
9 Months Ended
Aug. 31, 2019
Notes Tables  
Schedule Of Accounts Receivable [Table Text Block]
   

August 31,

2019

   

November 24,

2018

 

Gross accounts receivable

  $ 21,429     $ 19,809  

Allowance for doubtful accounts

    (789 )     (754 )

Accounts receivable, net

  $ 20,640     $ 19,055  
Financing Receivable, Current, Allowance for Credit Loss [Table Text Block]

Balance at November 24, 2018

  $ 754  

Additions to allowance, net

    35  

Balance at August 31, 2019

  $ 789