Note 8 - Post Employment Benefit Obligations - Components of Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 29, 2021	May 30, 2020	May 29, 2021	May 30, 2020
Service cost	$ 31	$ 43	$ 60	$ 87
Interest cost	48	67	98	134
Amortization of prior service costs	31	31	63	63
Amortization of loss	15	2	30	4
Net periodic pension cost	$ 125	$ 143	$ 251	$ 288