Note 5 - Goodwill and Other Intangible Assets - Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	Aug. 31, 2019	Dec. 01, 2018
Original cost	$ 1,114,617	$ 1,172,384
Accumulated amortization	(302,111)	(264,726)
Net identifiable intangibles	812,506	907,658
Purchased Technology And Patents [Member]
Original cost	112,680	118,930
Accumulated amortization	(43,881)	(41,503)
Net identifiable intangibles	68,799	77,427
Customer Relationships [Member]
Original cost	910,817	953,929
Accumulated amortization	(210,835)	(175,318)
Net identifiable intangibles	699,982	778,611
Trade Names [Member]
Original cost	63,480	65,975
Accumulated amortization	(24,698)	(21,573)
Net identifiable intangibles	38,782	44,402
Other Intangible Assets [Member]
Original cost	27,640	33,550
Accumulated amortization	(22,697)	(26,332)
Net identifiable intangibles	$ 4,943	$ 7,218