Note 10 - Pension and Postretirement Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 27, 2021	Nov. 28, 2020	Nov. 30, 2019
Net periodic (benefit) cost	$ (8,029)	$ (6,706)	$ (5,332)
UNITED STATES
Net periodic (benefit) cost	(18,629)	(6,828)	(5,920)
Foreign Plan [Member]
Net periodic (benefit) cost	(2,005)	(1,230)	(48)
Pension Plan [Member] | UNITED STATES
Service cost	0	0	4
Interest cost	9,299	11,738	14,691
Expected return on assets	(31,123)	(25,758)	(25,305)
Prior service cost (benefit)	(3)	(3)	13
Actuarial loss	3,198	7,195	4,677
Curtailment loss	0	0	0
Settlement charge	0	0	0
Pension Plan [Member] | Foreign Plan [Member]
Service cost	3,280	2,950	2,237
Interest cost	2,941	3,158	4,678
Expected return on assets	(12,348)	(11,312)	(10,224)
Prior service cost (benefit)	69	64	64
Actuarial loss	4,053	3,829	3,114
Curtailment loss	0	14	83
Settlement charge	0	67	0
Other Postretirement Benefits Plan [Member]
Service cost	21	73	98
Interest cost	822	1,135	1,550
Expected return on assets	(8,945)	(7,976)	(7,013)
Prior service cost (benefit)	0	0	0
Actuarial loss	73	62	33
Curtailment loss	0	0	0
Settlement charge	$ 0	$ 0	$ 0