Note 12 - Discontinued Operations - Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 26, 2022	Feb. 27, 2021	Nov. 27, 2021
Current assets of discontinued operations held for sale	$ 61,888		$ 11,064
Long-term assets of discontinued operations held for sale	0		52,757
Current liabilities of discontinued operations held for sale	29,892		16,095
Long-term liabilities of discontinued operations held for sale	0		16,210
Discontinued Operations, Disposed of by Sale [Member] | Zenith Freight Lines [Member]
Accounts receivable, net	7,174		7,601
Other current assets	3,506		3,463
Property and equipment, net	23,891		24,898
Goodwill and other intangible assets	9,023		9,094
Right of use assets under operating leases	17,729		18,193
Other	565		572
Total assets of discontinued operations held for sale	61,888		63,821
Current assets of discontinued operations held for sale	61,888		11,064
Long-term assets of discontinued operations held for sale	0		52,757
Accounts payable	3,575		4,336
Accrued compensation and benefits	2,582		3,295
Current portion operating lease obligations	7,585		7,458
Other current liabilites and accrued expenses	902		1,006
Long-term portion of operating lease obligations	10,332		10,996
Other long-term liabilities	4,916		5,214
Total liabilities of discontinued operations held for sale	29,892		32,305
Current liabilities of discontinued operations held for sale	29,892		16,095
Long-term liabilities of discontinued operations held for sale	0		$ 16,210
Major line items constituting pretax income of discontinued operations:
Logistical services revenue	16,776	$ 12,018
Cost of logistical services	15,001	11,558
Other loss, net	(63)	(38)
Pretax income of discontinued operations	1,712	422
Income tax expense	430	109
Income from discontinued operations	1,282	313
Cash provided by operating activities	1,681	2,841
Cash used in investing activities	(81)	(120)
Cash used in financing activities	(371)	(173)
Net cash provided by discontinued operations	$ 1,229	$ 2,548