Note 10 - Pension and Postretirement Benefits - Weighted-average Assumption Used to Determine Benefit Obligations and Net Costs (Details)		12 Months Ended
		Dec. 01, 2018	Dec. 02, 2017	Dec. 03, 2016
UNITED STATES
Discount rate		4.51%	3.73%	4.10%
Expected Long-term Return on Assets		7.75%	7.75%	7.75%
Foreign Plan [Member]
Expected Long-term Return on Assets		6.20%	6.21%	6.20%
Pension Plan [Member] | UNITED STATES
Discount rate		4.50%	3.72%	4.08%
Rate of compensation increase	[1]	4.50%	4.50%	4.50%
Discount rate		3.72%	4.08%	4.28%
Expected Long-term Return on Assets		7.75%	7.75%	7.75%
Rate of compensation increase	[1]	4.50%	4.50%	4.50%
Pension Plan [Member] | Foreign Plan [Member]
Discount rate		2.29%	2.12%	2.31%
Rate of compensation increase	[1]	1.75%	1.71%	1.47%
Discount rate		2.10%	2.15%	2.83%
Expected Long-term Return on Assets		6.20%	6.21%	6.20%
Rate of compensation increase	[1]	1.75%	1.47%	1.58%
Other Postretirement Benefits Plan [Member]
Discount rate		4.37%	3.54%	3.85%
Discount rate		3.54%	3.85%	4.02%
Expected Long-term Return on Assets		8.75%	8.75%	8.75%

[1] Benefits under the U.S. Pension Plan were locked-in as of May 31, 2011 and no longer include compensation increases. The 4.50 percent rate for 2017, 2016 and 2015 are for the supplemental executive retirement plan only.