Note 13 - Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	May 28, 2016	Nov. 28, 2015
Purchased Technology And Patents [Member]
Original cost	$ 70,092	$ 69,792
Accumulated amortization	(21,649)	(17,613)
Net identifiable intangibles	48,443	52,179
Customer Relationships [Member]
Original cost	236,004	234,995
Accumulated amortization	(106,499)	(99,405)
Net identifiable intangibles	129,505	135,590
Other Intangible Assets [Member]
Original cost	49,776	49,563
Accumulated amortization	(27,157)	(24,801)
Net identifiable intangibles	22,619	24,762
Original cost	355,871	354,350
Accumulated amortization	(155,305)	(141,819)
Net identifiable intangibles	$ 200,566	$ 212,531