Note 8 - Post Employment Benefit Obligations - Pension Liability (Details) - Pension Plans Defined Benefit and Supplemental Employee Retirement Plan [Member] - USD ($) $ in Thousands	Feb. 27, 2021	Nov. 28, 2020
Combined pension liability	$ 10,058	$ 10,071
Accrued Compensation and Benefits [Member]
Combined pension liability	613	613
Post Employment Benefit Obligations [Member]
Combined pension liability	$ 9,445	$ 9,458

Amount of liability, recognized in statement of financial position, for pension, other postretirement and postemployment benefits.

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