Note 11 - Accumulated Other Comprehensive Income (Loss) - Activity in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 26, 2022	Nov. 27, 2021	Nov. 28, 2020
Balance	$ 162,732	$ 158,030	$ 178,670
Foreign currency translation adjustment	(274)	0	0
Balance	195,609	162,732	158,030
AOCI Attributable to Parent [Member]
Balance	(1,823)	(1,394)	(1,236)
Actuarial losses	2,503	(762)
Net pension amortization reclassified from accumulated other comprehensive loss	256	186
Tax effects	(614)	147
Foreign currency translation adjustment	(272)
Balance	$ 50	$ (1,823)	$ (1,394)