Note 9 - Accounting for Share-based Compensation - Deferred Compensation Units (Details) - shares		12 Months Ended
		Dec. 03, 2022	Nov. 27, 2021	Nov. 28, 2020
Units outstanding (in shares)		516,885	499,818	562,324
Participant contributions (in shares)		102,039	23,523	31,822
Company match contributions1 (in shares)	[1]	28,142	21,167	24,414
Payouts (in shares)		(124,502)	(27,623)	(118,742)
Units outstanding (in shares)		522,564	516,885	499,818
Non Employee Directors [Member]
Units outstanding (in shares)		468,524	455,265	525,660
Participant contributions (in shares)		89,054	13,036	18,008
Company match contributions1 (in shares)	[1]	26,843	20,118	23,033
Payouts (in shares)		(118,429)	(19,895)	(111,436)
Units outstanding (in shares)		465,992	468,524	455,265
Employees [Member]
Units outstanding (in shares)		48,361	44,553	36,664
Participant contributions (in shares)		12,985	10,487	13,814
Company match contributions1 (in shares)	[1]	1,299	1,049	1,381
Payouts (in shares)		(6,073)	(7,728)	(7,306)
Units outstanding (in shares)		56,572	48,361	44,553

[1] The non-employee directors’ company match includes 17,937, 18,814 and 21,323 deferred compensation units paid as discretionary awards to all non-employee directors in 2022, 2021 and 2020, respectively.