Schedule II - Analysis of Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Nov. 28, 2020		Nov. 30, 2019	Nov. 24, 2018
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Balance Beginning of Period		$ 815		$ 754	$ 617
Additions Charged to Cost and Expenses		492		61	339
Deductions	[1]	(96)		0	(252)
Other		0	[2]		50
Balance End of Period		1,211		815	754
SEC Schedule, 12-09, Allowance, Notes Receivable [Member]
Balance Beginning of Period		359		377	1,454
Additions Charged to Cost and Expenses		0		0	0
Deductions	[1]	(18)		(18)	(1,077)
Other		0		0	0
Balance End of Period		$ 341		$ 359	$ 377

[1] Deductions are for the purpose for which the reserve was created.

[2] Represents reserves of acquired business at date of acquisition.