Note 10 - Pension and Postretirement Benefits - Amounts in Accumulated Other Comprehensive Income That Have Not Been Recognized as Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	Nov. 27, 2021	Nov. 28, 2020
Pension Plan [Member] | UNITED STATES
Unrecognized actuarial loss	$ 129,198	$ 147,917
Unrecognized prior service (benefit) cost	(3)	(6)
Ending balance	129,195	147,911
Pension Plan [Member] | Foreign Plan [Member]
Unrecognized actuarial loss	64,782	87,368
Unrecognized prior service (benefit) cost	1,390	1,453
Ending balance	66,172	88,821
Other Postretirement Benefits Plan [Member]
Unrecognized actuarial loss	(30,278)	(4,318)
Unrecognized prior service (benefit) cost	0	0
Ending balance	$ (30,278)	$ (4,318)