Note 9 - Post Employment Benefit Obligations - Components of Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 26, 2023	Aug. 27, 2022	Aug. 26, 2023	Aug. 27, 2022
Service cost	$ 7	$ 9	$ 20	$ 27
Interest cost	93	58	278	173
Amortization of prior service costs	31	31	94	94
Amortization of loss	0	33	0	100
Net periodic pension cost	$ 131	$ 131	$ 392	$ 394