Note 13 - Income Taxes - Components of Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 24, 2018
Federal	$ (8,486)	$ 2,150	$ (1,137)
State	155	892	462
Federal	2,457	(2,191)	4,747
State	(491)	(663)	(84)
Total	$ (6,365)	$ 188	$ 3,988