Note 10 - Pension and Postretirement Benefits - Statement of Financial Position as of Fiscal Year End (Details) - USD ($) $ in Thousands	Dec. 02, 2023	Dec. 03, 2022
Non-current liabilities	$ (50,189)	$ (52,561)
Pension Plan [Member]
Prepaid postretirement costs	92,323	86,616
Pension Plan [Member] | UNITED STATES
Prepaid postretirement costs	76,677	69,826
Current liabilities	(1,239)	(1,248)
Non-current liabilities	(11,089)	(11,666)
Ending balance	64,349	56,912
Pension Plan [Member] | Foreign Plan [Member]
Prepaid postretirement costs	15,635	16,790
Current liabilities	(1,464)	(1,727)
Non-current liabilities	(26,345)	(28,006)
Ending balance	(12,174)	(12,943)
Other Postretirement Benefits Plan [Member]
Prepaid postretirement costs	113,431	98,848
Current liabilities	(218)	(218)
Non-current liabilities	(1,893)	(2,021)
Ending balance	$ 111,320	$ 96,609