Note 7 - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 27, 2016	Feb. 28, 2015
United States Pension Plan of US Entity [Member]
Service cost	$ 27	$ 27
Interest cost	3,767	4,081
Expected return on assets	(6,077)	(6,420)
Prior service cost	7	7
Actuarial loss (gain)	1,293	1,407
Net periodic (benefit) cost	(983)	(898)
Foreign Pension Plan [Member]
Service cost	480	507
Interest cost	1,367	1,516
Expected return on assets	(2,482)	(2,667)
Prior service cost	(1)	(1)
Actuarial loss (gain)	752	831
Net periodic (benefit) cost	116	186
Other Postretirement Benefit Plan [Member]
Service cost	84	112
Interest cost	480	510
Expected return on assets	(1,342)	(1,377)
Prior service cost	(10)	(626)
Actuarial loss (gain)	532	608
Net periodic (benefit) cost	$ (256)	$ (773)