Note 10 - Post-employment Benefit Obligations - Components of Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 29, 2025	Nov. 30, 2024	Nov. 25, 2023
Service cost	$ 15	$ 13	$ 27
Interest cost	325	$ 391	370
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]		Selling, general and administrative expenses
Amortization of prior service cost	0	$ 61	125
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]		Selling, general and administrative expenses
Amortization of other loss	(65)	$ (22)	0
Net periodic pension cost	275	$ 443	$ 522
Fiscal 2026	815
Fiscal 2027	802
Fiscal 2028	793
Fiscal 2029	746
Fiscal 2030	702
Fiscal 2031 through 2035	$ 2,800
Pension Plan [Member]
Discount rate	5.00%	5.92%	5.38%
Increase in future compensation levels	3.00%	3.00%	3.00%