Note 10 - Pension and Postretirement Benefits - Statement of Financial Position as of Fiscal Year End (Details) - USD ($) $ in Thousands	Nov. 29, 2025	Nov. 30, 2024
Non-current liabilities	$ (51,317)	$ (51,755)
Pension Plan [Member]
Prepaid postretirement costs	146,648	119,493
Pension Plan [Member] | UNITED STATES
Prepaid postretirement costs	125,040	102,637
Current liabilities	(1,206)	(1,239)
Non-current liabilities	(10,449)	(11,184)
Ending balance	113,385	90,214
Pension Plan [Member] | Foreign Plan [Member]
Prepaid postretirement costs	21,597	16,846
Current liabilities	(1,571)	(1,443)
Non-current liabilities	(27,111)	(28,146)
Ending balance	(7,085)	(12,743)
Other Postretirement Benefits Plan [Member]
Prepaid postretirement costs	179,861	156,576
Current liabilities	(201)	(214)
Non-current liabilities	(1,691)	(1,837)
Ending balance	$ 177,969	$ 154,525