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Note 10 - Pension Liability (Details) - USD ($)
$ in Thousands
Aug. 27, 2016
Nov. 28, 2015
Supplemental Employee Retirement Plan [Member]    
Accrued compensation and benefits $ 749 $ 749
Postemployment Benefits Liability, Noncurrent 10,944 10,929
Postemployment Benefits Liability 11,693 11,678
Unfunded Deferred Compensation Plan [Member]    
Accrued compensation and benefits 320 320
Postemployment Benefits Liability, Noncurrent 1,690 1,765
Postemployment Benefits Liability 2,010 2,085
Postemployment Benefits Liability, Noncurrent $ 12,634 $ 12,694