Note 3 - Restructuring Actions - Restructuring Reserve (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2019	Dec. 01, 2018
Balance	$ 4,256	$ 1,506
Restructuring Charges	14,535	8,881
Non-cash charges	(968)	(1,666)
Cash payments	(6,997)	(4,407)
Foreign currency translation	(72)	(58)
Balance	10,754	4,256
Employee Related [Member]
Balance	4,256	1,486
Restructuring Charges	9,140	6,223
Non-cash charges	0	0
Cash payments	(3,494)	(3,395)
Foreign currency translation	(72)	(58)
Balance	9,830	4,256
Asset Related [Member]
Balance	0	0
Restructuring Charges	1,929	2,353
Non-cash charges	(968)	(1,666)
Cash payments	(961)	(687)
Foreign currency translation	0	0
Balance	0	0
Other Restructuring [Member]
Balance	0	20
Restructuring Charges	3,466	305
Non-cash charges	0	0
Cash payments	(2,542)	(325)
Foreign currency translation	0	0
Balance	$ 924	$ 0