Note 10 - Pension and Postretirement Benefits (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2024	Dec. 02, 2023	Dec. 03, 2022
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	75.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	4.00%
Defined Contribution Plan, Annual Retirement Percentage	1.00%
Defined Contribution Plan, Cost	$ 15,590	$ 14,221	$ 12,113
Defined Contribution Plan, Employer Discretionary Contribution Amount	0
Liability, Defined Benefit Plan	$ 11,992	11,626
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Increase (decrease) in Discount Rate	0.50%
Impact on Pension and Other Postretirement Benefit Expense from a Change in Discount Rate	$ 144
Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0
Group Term Life Insurance Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	$ 0	0
Equity Funds [Member] | Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	55.00%
Fixed Income Funds [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	45.00%
Fixed Income Funds [Member] | Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	45.00%
UNITED STATES
Defined Benefit Plan, Accumulated Benefit Obligation	$ 275,599	$ 273,197
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	5.23%	5.66%	5.36%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Increase (decrease) in Discount Rate	0.50%
Impact on Pension and Other Postretirement Benefit Expense from a Change in Discount Rate	$ 2,622
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets	7.75%	7.75%	7.00%
UNITED STATES | Equity Funds [Member]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets	8.50%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	55.00%
UNITED STATES | Fixed Income Funds [Member]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets	5.60%
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	45.00%
UNITED KINGDOM
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets	4.50%
GERMANY
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets	5.50%
Foreign Plan [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	$ 142,503	$ 141,402
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets	5.01%	5.02%	3.49%
Four Percent Match [Member]
Defined Contribution Plan, Cost	$ 10,070
One Percent Match [Member]
Defined Contribution Plan, Cost	$ 5,520