Note 8 - Goodwill and Other Intangible Assets - Useful Lives and Remaining Amortization Period of Goodwill and Other Intangible Assets (Details)	12 Months Ended
Nov. 28, 2020
Customer Relationships [Member]
Useful life (Year)	14 years
Remaining Amortization Period (Year)	9 years
Technology-Based Intangible Assets [Member]
Useful life (Year)	7 years
Remaining Amortization Period (Year)	1 year

Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959

Name:	us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration