Note 5 - Goodwill and Other Intangible Assets - Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	May 29, 2021	Nov. 28, 2020
Original cost	$ 1,140,414	$ 1,122,394
Accumulated amortization	(408,185)	(366,945)
Net identifiable intangibles	732,229	755,449
Purchased Technology And Patents [Member]
Original cost	118,086	113,775
Accumulated amortization	(58,867)	(53,216)
Net identifiable intangibles	59,219	60,559
Customer Relationships [Member]
Original cost	946,526	933,943
Accumulated amortization	(311,899)	(279,586)
Net identifiable intangibles	634,627	654,357
Trade Names [Member]
Original cost	64,380	63,266
Accumulated amortization	(32,167)	(29,368)
Net identifiable intangibles	32,213	33,898
Other Intangible Assets [Member]
Original cost	11,422	11,410
Accumulated amortization	(5,252)	(4,775)
Net identifiable intangibles	$ 6,170	$ 6,635