Note 10 - Pension and Postretirement Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 03, 2016	Nov. 28, 2015	Nov. 29, 2014
United States Pension Plan of US Entity [Member]
Service cost	$ 110	$ 107	$ 93
Interest cost	15,360	16,322	16,086
Expected return on assets	(24,776)	(25,682)	(23,865)
Prior service cost	29	29	29
Actuarial loss (gain)	5,271	5,628	4,575
Curtailment loss (gain)
Settlement charge (credit)
Net periodic benefit (benefit) cost	(4,006)	(3,596)	(3,082)
Foreign Pension Plan [Member]
Service cost	2,016	1,924	1,699
Interest cost	5,465	5,986	7,626
Expected return on assets	(9,919)	(10,422)	(10,749)
Prior service cost	(3)	(4)	(4)
Actuarial loss (gain)	3,106	3,173	3,056
Curtailment loss (gain)	19
Settlement charge (credit)	135		246
Net periodic benefit (benefit) cost	819	657	1,874
Other Postretirement Benefit Plan [Member]
Service cost	342	449	434
Interest cost	1,956	2,042	2,143
Expected return on assets	(5,470)	(5,510)	(4,742)
Prior service cost	(41)	(2,505)	(3,771)
Actuarial loss (gain)	2,169	2,431	2,709
Curtailment loss (gain)
Settlement charge (credit)
Net periodic benefit (benefit) cost	$ (1,044)	$ (3,093)	$ (3,227)