Note 7 - Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Details) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Feb. 26, 2022	Nov. 27, 2021
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member]
Before Reclassifications, tax	$ (21)	$ (53)
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] | Interest Rate Swap [Member]
Before Reclassifications, tax	1,200	3,224
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Before Reclassifications, tax	$ 63,581	$ 63,925