Note 6 - Components of Net Periodic Benefit Related to Pension and Other Postretirement Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 28, 2022	May 29, 2021	May 28, 2022	May 29, 2021
Settlement charge	$ 3,329
Pension Plan [Member] | UNITED STATES
Service cost	0	$ 0	$ 0	$ 0
Interest cost	2,368	2,325	4,735	4,650
Expected return on assets	(7,117)	(7,781)	(14,235)	(15,561)
Prior service cost (benefit)	(1)	(1)	(2)	(2)
Actuarial loss	1,013	799	2,027	1,599
Settlement charge	0	0	0	0
Net periodic benefit	(3,737)	(4,658)	(7,475)	(9,314)
Pension Plan [Member] | Foreign Plan [Member]
Service cost	700	821	1,420	1,654
Interest cost	736	739	1,525	1,472
Expected return on assets	(1,644)	(3,104)	(3,391)	(6,181)
Prior service cost (benefit)	16	17	32	34
Actuarial loss	611	1,016	1,260	2,038
Settlement charge	3,329	0	3,329	0
Net periodic benefit	3,748	(511)	4,175	(983)
Other Postretirement Benefits Plan [Member]
Service cost	0	5	0	11
Interest cost	184	206	367	411
Expected return on assets	(2,719)	(2,236)	(5,437)	(4,472)
Prior service cost (benefit)	0	0	0	0
Actuarial loss	(845)	18	(1,690)	36
Settlement charge	0	0	0	0
Net periodic benefit	$ (3,380)	$ (2,007)	$ (6,760)	$ (4,014)