Note 9 - Post-employment Benefit Obligations - Plan Summary (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 27, 2021	Nov. 28, 2020	Nov. 30, 2019
Projected benefit obligation	$ 10,071	$ 10,090
Service cost	121	172	$ 190
Interest cost	196	268	441
Actuarial (gains) and losses	762	345
Benefits paid	(409)	(804)
Projected benefit obligation	10,740	10,071	$ 10,090
Accumulated Benefit Obligation	$ 10,740	$ 10,034
Discount rate used to value the ending benefit obligations:	2.25%	2.00%
Current liabilities	$ 913	$ 613
Noncurrent liabilities	9,827	9,458
Total amounts recognized	10,740	10,071
Prior service cost	355	480
Actuarial loss	2,093	1,394
Net amount recognized	2,448	1,874
other comprehensive income:	$ 1,078	$ 785