Note 10 - Pension and Postretirement Benefits - Amounts in Accumulated Other Comprehensive Income That Have Not Been Recognized as Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	Dec. 03, 2016	Nov. 28, 2015
United States Pension Plan of US Entity [Member]
Unrecognized actuarial loss	$ 157,185	$ 160,544
Unrecognized prior service cost (benefit)	61	90
Ending balance	157,246	160,634
Foreign Pension Plan [Member]
Unrecognized actuarial loss	82,874	75,157
Unrecognized prior service cost (benefit)	(7)	(11)
Ending balance	82,867	75,146
Other Postretirement Benefit Plan [Member]
Unrecognized actuarial loss	13,653	21,189
Unrecognized prior service cost (benefit)		(41)
Ending balance	$ 13,653	$ 21,148