Note 8 - Post Employment Benefit Obligations - Components of Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2024	Aug. 26, 2023	Aug. 31, 2024	Aug. 26, 2023
Service cost	$ 3	$ 7	$ 10	$ 20
Interest cost	98	93	293	278
Amortization of prior service costs	26	31	77	94
Amortization of loss	(16)	0	(48)	0
Net periodic pension cost	$ 111	$ 131	$ 332	$ 392