Note 7 - Property and Equipment (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Feb. 29, 2020	Nov. 28, 2020	Nov. 30, 2019	Nov. 24, 2018
Proceeds from Sale of Property, Plant, and Equipment, Total	$ 1,639	$ 2,345	$ 1,643	$ 2,689
Other Current Assets [Member]
Assets Held-for-sale, Not Part of Disposal Group, Current, Total			$ 1,569

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration