Note 10 - Pension and Postretirement Benefits - Statement of Financial Position as of Fiscal Year End (Details) - USD ($) $ in Thousands	Nov. 30, 2024	Dec. 02, 2023
Non-current liabilities	$ (51,755)	$ (50,189)
Pension Plan [Member]
Prepaid postretirement costs	119,493	92,323
Pension Plan [Member] | UNITED STATES
Prepaid postretirement costs	102,637	76,677
Current liabilities	(1,239)	(1,239)
Non-current liabilities	(11,184)	(11,089)
Ending balance	90,214	64,349
Pension Plan [Member] | Foreign Plan [Member]
Prepaid postretirement costs	16,846	15,635
Current liabilities	(1,443)	(1,464)
Non-current liabilities	(28,146)	(26,345)
Ending balance	(12,743)	(12,174)
Other Postretirement Benefits Plan [Member]
Prepaid postretirement costs	156,576	113,431
Current liabilities	(214)	(218)
Non-current liabilities	(1,837)	(1,893)
Ending balance	$ 154,525	$ 111,320