Note 5 - Goodwill and Other Intangible Assets - Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 01, 2019	Dec. 01, 2018
Original cost	$ 1,167,341	$ 1,172,384
Accumulated amortization	(291,323)	(264,726)
Net identifiable intangibles	876,018	907,658
Purchased Technology And Patents [Member]
Original cost	114,577	118,930
Accumulated amortization	(43,749)	(41,503)
Net identifiable intangibles	70,828	77,427
Customer Relationships [Member]
Original cost	959,237	953,929
Accumulated amortization	(202,260)	(175,318)
Net identifiable intangibles	756,977	778,611
Trade Names [Member]
Original cost	66,067	65,975
Accumulated amortization	(23,547)	(21,573)
Net identifiable intangibles	42,520	44,402
Other Intangible Assets [Member]
Original cost	27,460	33,550
Accumulated amortization	(21,767)	(26,332)
Net identifiable intangibles	$ 5,693	$ 7,218