Note 4 - Supplemental Financial Statement Information - Components of Accumulated Other Comprehensive Income (Loss) (Details) (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Nov. 27, 2021	Nov. 28, 2020	Nov. 30, 2019
Before Reclassifications, tax			$ 81,891
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member]
Before Reclassifications, tax	$ (53)	$ (121)	21
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] | Interest Rate Swap [Member]
Before Reclassifications, tax	3,224	8,153	$ (4,300)
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Before Reclassifications, tax	$ 63,925	$ 80,656