Note 10 - Pension and Postretirement Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 28, 2015	Nov. 29, 2014	Nov. 30, 2013
United States Pension Plan of US Entity [Member]
Service cost	$ 107	$ 93	$ 106
Interest cost	16,322	16,086	14,719
Expected return on assets	(25,682)	(23,865)	(22,720)
Prior service cost	29	29	49
Actuarial loss (gain)	$ 5,628	$ 4,575	6,742
Curtailment loss (gain)			$ 102
Settlement charge (credit)
Net periodic benefit (benefit) cost	$ (3,596)	$ (3,082)	$ (1,002)
Foreign Pension Plan [Member]
Service cost	1,924	1,699	1,799
Interest cost	5,986	7,626	7,486
Expected return on assets	(10,422)	(10,749)	(9,390)
Prior service cost	(4)	(4)	(4)
Actuarial loss (gain)	$ 3,173	$ 3,056	3,778
Curtailment loss (gain)			53
Settlement charge (credit)		$ 246	153
Net periodic benefit (benefit) cost	$ 657	1,874	3,875
Other Postretirement Benefit Plan [Member]
Service cost	449	434	623
Interest cost	2,042	2,143	2,133
Expected return on assets	(5,510)	(4,742)	(3,725)
Prior service cost	(2,505)	(3,771)	(4,134)
Actuarial loss (gain)	$ 2,431	$ 2,709	$ 5,717
Curtailment loss (gain)
Settlement charge (credit)
Net periodic benefit (benefit) cost	$ (3,093)	$ (3,227)	$ 614