Note 9 - Post Employment Benefit Obligations - Components of Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 26, 2018	May 27, 2017	May 26, 2018	May 27, 2017
Service cost	$ 49	$ 49	$ 98	$ 87
Interest cost	105	114	210	222
Amortization of prior service costs	31	24	62	24
Amortization of transition obligation	11	11	22	21
Amortization of loss	65	83	130	166
Net periodic pension cost	$ 261	$ 281	$ 522	$ 520