Note 14 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Nov. 28, 2020	Nov. 30, 2019
Accrued Environmental Loss Contingencies, Noncurrent	$ 8,099	$ 8,535
Facility in Simpsonville, South Carolina [Member]
Operating Leases, Rent Expense, Total	$ 3,703	$ 4,117

Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable after twelve months or beyond the next operating cycle if longer.

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