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Note 12 - Accumulated Other Comprehensive Loss (Tables)
12 Months Ended
Nov. 28, 2015
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Balance at November 30, 2013
  $ (1,414 )
Actuarial losses
    (1,084 )
Net pension amortization reclassified from accumulated other comprehensive loss
    166  
Tax effects
    358  
Balance at November 29, 2014
    (1,974 )
Actuarial losses
    (1,372 )
Net pension amortization reclassified from accumulated other comprehensive loss
    237  
Tax effects
    431  
Balance at November 28, 2015
  $ (2,678 )