Note 13 - Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	Aug. 27, 2016	Nov. 28, 2015
Purchased Technology And Patents [Member]
Original cost	$ 70,237	$ 69,792
Accumulated amortization	(23,727)	(17,613)
Net identifiable intangibles	46,510	52,179
Customer Relationships [Member]
Original cost	243,017	234,995
Accumulated amortization	(110,258)	(99,405)
Net identifiable intangibles	132,759	135,590
Other Intangible Assets [Member]
Original cost	49,776	49,563
Accumulated amortization	(28,343)	(24,801)
Net identifiable intangibles	21,433	24,762
Original cost	363,030	354,350
Accumulated amortization	(162,328)	(141,819)
Net identifiable intangibles	$ 200,702	$ 212,531