Note 5 - Goodwill and Other Intangible Assets - Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	May 30, 2020	Nov. 30, 2019
Original cost	$ 1,102,762	$ 1,113,925
Accumulated amortization	(327,914)	(315,006)
Net identifiable intangibles	774,848	798,919
Purchased Technology And Patents [Member]
Original cost	109,201	109,967
Accumulated amortization	(47,354)	(43,351)
Net identifiable intangibles	61,847	66,616
Customer Relationships [Member]
Original cost	920,030	913,968
Accumulated amortization	(249,338)	(223,563)
Net identifiable intangibles	670,692	690,405
Trade Names [Member]
Original cost	62,219	62,537
Accumulated amortization	(26,965)	(24,819)
Net identifiable intangibles	35,254	37,718
Other Intangible Assets [Member]
Original cost	11,312	27,453
Accumulated amortization	(4,257)	(23,273)
Net identifiable intangibles	$ 7,055	$ 4,180