Note 4 - Supplemental Financial Statement Information - Balance Sheet Information (Details) - USD ($) $ in Thousands	Nov. 27, 2021	Nov. 28, 2020	Nov. 30, 2019
Raw materials	$ 226,723	$ 151,026
Finished goods	221,681	172,187
Total inventories	448,404	323,213
Other receivables	28,874	18,666
Prepaid income taxes	13,359	22,137
Prepaid taxes other than income taxes	26,929	20,270
Prepaid expenses	25,889	19,212
Assets held for sale	1,284	828
Total other current assets	96,335	81,113
Land	84,492	87,403
Buildings and improvements	395,849	393,175
Machinery and equipment	915,914	876,858
Construction in progress	104,734	70,747
Total, at cost	1,500,989	1,428,183
Accumulated depreciation	(805,622)	(757,439)
Net property, plant and equipment	695,367	670,744	$ 629,813
Investments and company owned life insurance	9,584	9,006
Equity method investments	49,333	53,863
Equity Securities without Readily Determinable Fair Value, Amount	1,667	1,669
Long-term deferred income taxes	37,116	37,376
Operating lease right-of-use assets	32,744	28,445
Other long-term receivables	23,661	16,760
Other long-term assets	19,699	14,751
Total other assets	372,073	278,213
Taxes other than income taxes	14,280	16,893
Miscellaneous services	5,626	5,691
Customer rebates	20,743	15,008
Interest	2,964	4,901
Insurance	329	184
Product liability	432	501
Contingent consideration liability	8,100	5,800
Current operating lease liabilities	8,921
Accrued expenses	24,666	26,292
Total other accrued expenses	86,061	83,976
Asset Retirement Obligations, Noncurrent, Total	2,917	2,948
Long-term deferred income taxes	179,401	165,877
Long-term income tax liability	14,364	18,089
Long-term deferred compensation	9,665	8,510
Postretirement other than pension	2,657	2,930
Noncurrent operating lease liabilities	24,061
Long-term accrued payroll tax	4,215	7,216
Environmental liabilities	3,521	3,639
Other long-term liabilities	36,389	50,212
Total other liabilities	277,190	278,919
Other Accrued Expenses [Member]
Current operating lease liabilities	8,921	8,706
Other Noncurrent Liabilities [Member]
Noncurrent operating lease liabilities	24,061	19,498
Pension Plan [Member]
Prepaid postretirement costs	90,946	43,206
Other Postretirement Benefits Plan [Member]
Prepaid postretirement costs	$ 107,323	$ 73,137