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Note 10 - Post Employment Benefit Obligations (Details Textual) - USD ($)
$ in Thousands
May 28, 2016
Nov. 28, 2015
Supplemental Employee Retirement Plan [Member]    
Postemployment Benefits Liability $ 11,688 $ 11,678
Postemployment Benefits Liability, Noncurrent 10,939 10,929
Unfunded Deferred Compensation Plan [Member]    
Postemployment Benefits Liability, Noncurrent 2,035 2,085
Postemployment Benefits Liability, Noncurrent $ 12,654 $ 12,694