Note 9 - Accounting for Share-based Compensation - Nonvested Restricted Stock Activity (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares	12 Months Ended
	Dec. 02, 2023	Dec. 03, 2022	Nov. 27, 2021	Nov. 28, 2020
Nonvested (in shares)	491,120	552,365	432,349
Nonvested, Weighted average grant date fair value (in dollars per share)	$ 58.98	$ 50.63	$ 46.22
Nonvested, Weighted average remaining contractual life (Year)	8 months 12 days	8 months 12 days	1 year 10 months 24 days	9 months 18 days
Granted (in shares)	187,185	179,603	356,779
Granted, Weighted average grant date fair value (in dollars per share)	$ 63.32	$ 67.92	$ 54.49
Granted, Weighted average remaining contractual life (Year)	2 years 2 months 12 days	3 years 2 months 12 days	3 years 2 months 12 days
Vested (in shares)	(113,339)	(172,474)	(157,945)
Vested, Weighted average grant date fair value (in dollars per share)	$ 53.83	$ 46.74	$ 48.69
Forfeited (in shares)	(36,276)	(68,374)	(78,818)
Forfeited, Weighted average grant date fair value (in dollars per share)	$ 44.48	$ 45.83	$ 47.79
Forfeited, Weighted average remaining contractual life (Year)	2 months 12 days	1 month 6 days	9 months 18 days
Nonvested (in shares)	528,690	491,120	552,365	432,349
Nonvested, Weighted average grant date fair value (in dollars per share)	$ 62.61	$ 58.98	$ 50.63	$ 46.22