Note 8 - 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
	Feb. 29, 2020	Mar. 02, 2019
Pension Plan [Member] | UNITED STATES
Service cost	$ 0	$ 1
Interest cost	2,935	3,673
Expected return on assets	(6,440)	(6,326)
Prior service cost (benefit)	(1)	3
Actuarial loss	1,799	1,169
Net periodic (benefit) cost	(1,707)	(1,480)
Pension Plan [Member] | Foreign Plan [Member]
Service cost	725	568
Interest cost	794	1,184
Expected return on assets	(2,842)	(2,587)
Prior service cost (benefit)	16	16
Actuarial loss	950	789
Net periodic (benefit) cost	(357)	(30)
Other Postretirement Benefits Plan [Member]
Service cost	18	24
Interest cost	284	387
Expected return on assets	(1,994)	(1,753)
Prior service cost (benefit)	0	0
Actuarial loss	15	8
Net periodic (benefit) cost	$ (1,677)	$ (1,334)