Note 10 - Post-employment Benefit Obligations (Details Textual) $ in Thousands			12 Months Ended
	May 02, 2017 USD ($)	May 01, 2017	Nov. 30, 2024 USD ($)	Nov. 25, 2023 USD ($)	Nov. 26, 2022 USD ($)	Nov. 26, 2023 USD ($)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax			$ (1,066)	$ (862)
Defined Benefit Plan, Expected Amortization, Next Fiscal Year			65
Postemployment Benefits Liability, Noncurrent			$ 10,882	10,207
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay			25.00%
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent			8.00%
Defined Contribution Plan, Cost			$ 943	998	$ 1,108
Unfunded Deferred Compensation Plan [Member]
Pension Cost (Reversal of Cost)			79	204	154
Postemployment Benefits Liability, Noncurrent			1,568			$ 1,655
Management Savings Plan [member]
Defined Benefit Plan, Fixed Future Benefit Award	$ 2,000
Defined Benefit Plan, Fixed Future Benefit Award, Individual Participants	$ 400
Defined Benefit Plan, Benefit Obligation, Number of Annual Installments	10
Payment to Acquire Life Insurance Policy, Operating Activities			343	1,019	853
Current Net Death Benefit			15,885
Supplemental Employee Retirement Plan [Member]
Deferred Compensation Arrangement with Individual, Deferred Compensation, Maximum Percentage of Base Salary		75.00%
Deferred Compensation Arrangement with Individual, Deferred Compensation, Maximum Percentage of Discretionary, Annual Incentive or Other Bonus		100.00%
Deferred Compensation Arrangement with Individual, Deferred Compensation, Scheduled Distributions, Maximum Number of Years (Year)		5 years
Deferred Compensation Arrangement with Individual, Compensation Expense			925	46	$ 16
Supplemental Employee Retirement Plan [Member] | Non-current Portion of Post Employment Benefits Liability [Member]
Deferred Compensation Arrangement with Individual, Recorded Liability			$ 3,486	$ 2,661