Note 9 - Components of Net Periodic Cost (Benefit) Related to Pension and Other Postretirement Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 02, 2017	Aug. 27, 2016	Sep. 02, 2017	Aug. 27, 2016
Pension Plan [Member] | UNITED STATES
Actuarial loss	$ 1,308	$ 1,292	$ 3,922	$ 3,878
Net periodic (benefit) cost	(1,419)	(984)	(4,257)	(2,949)
Service cost	27	27	83	81
Interest cost	3,603	3,768	10,809	11,303
Expected return on assets	(6,365)	(6,078)	(19,093)	(18,232)
Prior service cost	8	7	22	21
Pension Plan [Member] | Foreign Plan [Member]
Actuarial loss	893	788	2,581	2,293
Net periodic (benefit) cost	127	214	333	446
Service cost	546	519	1,566	1,480
Interest cost	1,199	1,343	3,490	4,076
Expected return on assets	(2,510)	(2,435)	(7,301)	(7,400)
Prior service cost	(1)	(1)	(3)	(3)
Other Postretirement Benefits Plan [Member]
Actuarial loss	251	532	757	1,596
Net periodic (benefit) cost	(745)	(256)	(2,233)	(768)
Service cost	52	84	156	252
Interest cost	399	479	1,195	1,439
Expected return on assets	(1,447)	(1,341)	(4,341)	(4,025)
Prior service cost		$ (10)		$ (30)