Note 10 - Pension and Postretirement Benefits - Change in Benefit Obligation and Plan Assets (Details) - USD ($) $ in Thousands		12 Months Ended
		Nov. 30, 2024	Dec. 02, 2023	Dec. 03, 2022
Pension Plan [Member] | UNITED STATES
Benefit obligation at beginning of year		$ 255,390	$ 269,874
Acquisitions		0	0
Service cost		0	0	$ 0
Interest cost		13,855	13,901	9,653
Participant contributions		0	0
Actuarial gain1	[1]	10,747	(7,298)
Plan amendments		0	0
Settlement payments		0	(141)
Benefits paid		(21,182)	(20,946)
Foreign currency translation effect		0	0
Benefit obligation at end of year		258,810	255,390	269,874
Level 3 balance		319,738	326,786
Acquisitions		0	0
Actual return on plan assets		49,271	12,811
Employer contributions		1,197	1,228
Participant contributions		0	0
Settlement payments		0	(141)
Benefits paid	[2]	(21,182)	(20,946)
Foreign currency translation effect		0	0
Level 3 balance		349,024	319,738	326,786
Plan assets in excess of (less than) benefit obligation as of year end		90,214	64,348
Pension Plan [Member] | Foreign Plan [Member]
Benefit obligation at beginning of year		146,796	154,850
Acquisitions		951	0
Service cost		1,538	1,670	2,765
Interest cost		6,215	5,726	2,893
Participant contributions		0	0
Actuarial gain1	[1]	3,391	(12,435)
Plan amendments		497	0
Settlement payments		0	(252)
Benefits paid		(8,526)	(7,663)
Foreign currency translation effect		(2,552)	4,900
Benefit obligation at end of year		148,310	146,796	154,850
Level 3 balance		134,622	141,908
Acquisitions		615	0
Actual return on plan assets		9,189	(5,545)
Employer contributions		1,624	1,744
Participant contributions		0	0
Settlement payments		0	0
Benefits paid	[2]	(8,526)	(7,663)
Foreign currency translation effect		(1,957)	4,178
Level 3 balance		135,567	134,622	141,908
Plan assets in excess of (less than) benefit obligation as of year end		(12,743)	(12,174)
Other Postretirement Benefits Plan [Member]
Benefit obligation at beginning of year		22,133	24,173
Acquisitions		0	0
Service cost		0	0	0
Interest cost		1,166	1,205	748
Participant contributions		252	232
Actuarial gain1	[1]	(125)	(611)
Plan amendments		0	0
Settlement payments		0	0
Benefits paid		(2,576)	(2,866)
Foreign currency translation effect		0	0
Benefit obligation at end of year		20,850	22,133	24,173
Level 3 balance		133,453	120,782
Acquisitions		0	0
Actual return on plan assets		44,160	15,160
Employer contributions		85	145
Participant contributions		252	232
Settlement payments		0	0
Benefits paid	[2]	(2,575)	(2,866)
Foreign currency translation effect		0	0
Level 3 balance		175,375	133,453	$ 120,782
Plan assets in excess of (less than) benefit obligation as of year end		$ 154,525	$ 111,320

[1] Actuarial gain in 2024 and 2023 for the U.S. Plans is primarily due to assumption changes. Actuarial gain in 2024 and 2023 for the Non-U.S. Plans are due to both assumption changes and plan experience.

[2] Amount excludes benefit payments made from sources other than plan assets.