Note 5 - Goodwill and Other Intangible Assets - Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	May 31, 2025	Nov. 30, 2024
Original cost	$ 1,308,591	$ 1,285,834
Accumulated amortization	(460,892)	(509,960)
Net identifiable intangibles	847,699	769,765
Impairment		(6,109)
Purchased Technology And Patents [Member]
Original cost	222,563	145,313
Accumulated amortization	(43,583)	(55,398)
Net identifiable intangibles	178,980	89,572
Impairment		(343)
Customer Relationships [Member]
Original cost	996,945	1,063,210
Accumulated amortization	(382,659)	(418,805)
Net identifiable intangibles	614,286	638,789
Impairment		(5,616)
Trade Names [Member]
Original cost	81,148	67,280
Accumulated amortization	(30,756)	(28,745)
Net identifiable intangibles	50,392	38,385
Impairment		(150)
Other Intangible Assets [Member]
Original cost	7,935	10,031
Accumulated amortization	(3,894)	(7,012)
Net identifiable intangibles	$ 4,041	3,019
Impairment