Note 8 - Post Employment Benefit Obligations - Components of Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 30, 2020	Jun. 01, 2019	May 30, 2020	Jun. 01, 2019
Service cost	$ 43	$ 47	$ 87	$ 94
Interest cost	67	110	134	221
Amortization of prior service costs	31	31	63	63
Amortization of loss	2	46	4	92
Net periodic pension cost	$ 143	$ 234	$ 288	$ 470