Note 3 - Restructuring Actions - Restructuring Reserve (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 29, 2020	Aug. 31, 2019	Aug. 29, 2020	Aug. 31, 2019	Nov. 30, 2019
Balance			$ 10,754	$ 4,256	$ 4,256
Expenses incurred	$ 989	$ 2,902	1,422	5,639	14,535
Non-cash charges					(968)
Cash payments			(7,412)		(6,997)
Foreign currency translation			253		(72)
Balance	5,017		5,017		10,754
Employee Related [Member]
Balance			9,830	4,256	4,256
Expenses incurred			206		9,140
Non-cash charges					0
Cash payments			(5,361)		(3,494)
Foreign currency translation			253		(72)
Balance	4,928		4,928		9,830
Asset Related [Member]
Balance			0	0	0
Expenses incurred			0		1,929
Non-cash charges					(968)
Cash payments			0		(961)
Foreign currency translation			0		0
Balance	0		0		0
Other Restructuring [Member]
Balance			924	$ 0	0
Expenses incurred			1,216		3,466
Non-cash charges					0
Cash payments			(2,051)		(2,542)
Foreign currency translation			0		0
Balance	$ 89		$ 89		$ 924