Note 12 - Discontinued Operations & Assets Held for Sale - Discontinued Operations (Details) - USD ($) $ in Thousands					3 Months Ended		6 Months Ended
		May 28, 2022	Feb. 28, 2022		May 28, 2022	May 29, 2021	May 28, 2022	May 29, 2021	Nov. 27, 2021
Major line items constituting pretax income of discontinued operations:
Proceeds from the disposal of discontinued operations, net							$ 85,521	$ 0
Net proceeds from the sale (2)							85,521	0
Current assets of discontinued operations held for sale		$ 0			$ 0		0		$ 11,064
Long-term assets of discontinued operations held for sale		0			0		0		52,757
Gain on disposal					53,254	$ 0	53,254	0
Current liabilities of discontinued operations held for sale		0			0		0		16,095
Long-term liabilities of discontinued operations held for sale		0			$ 0		0		16,210
Zenith Freight Lines [Member] | Discontinued Operations, Disposed of by Sale [Member]
Sales price prior to post-closing working capital adjustment			$ 86,939
Major line items constituting pretax income of discontinued operations:
Cash provided by operating activities							1,681	3,646
Accounts receivable, net									7,601
Logistical services revenue		0				14,062	16,776	26,080
Amount held in escrow for contingencies related to representations and warranties (1)	[1]		1,000
Other current assets									3,463
Proceeds from the disposal of discontinued operations, net			85,521	[2]			(81)	(1,138)
Seller expenses paid at closing			418
Property and equipment, net									24,898
Net proceeds from the sale (2)			$ 85,521	[2]			(81)	(1,138)
Goodwill and other intangible assets									9,094
Right of use assets under operating leases									18,193
Cost of logistical services		0				12,768	15,001	24,327
Other									572
Cash used in financing activities							(371)	(467)
Disposal Group, Including Discontinued Operation, Assets, Total									63,821
Current assets of discontinued operations held for sale									11,064
Other loss, net		0				(72)	(63)	(109)
Long-term assets of discontinued operations held for sale									52,757
Net cash provided by discontinued operations							1,229	2,041
Accounts payable									4,336
Accrued compensation and benefits									3,295
Current portion operating lease obligations									7,458
Other current liabilites and accrued expenses									1,006
Income from operations of logistical services		0				1,222	1,712	1,644
Long-term portion of operating lease obligations									10,996
Other long-term liabilities									5,214
Disposal Group, Including Discontinued Operation, Liabilities, Total									32,305
Gain on disposal		53,254				0	53,254	0
Current liabilities of discontinued operations held for sale									16,095
Long-term liabilities of discontinued operations held for sale									$ 16,210
Pretax income of discontinued operations		53,254				1,222	54,966	1,644
Income tax expense		13,879				325	14,309	433
Income from discontinued operations, net of tax		$ 39,375				$ 897	$ 40,657	$ 1,211

[1] To be held in escrow until the first anniversary of the sale, at which time any amount not distributed or reserved for specified claims will be released to the Company. This amount is included in other current assets in the accompanying condensed consolidated balance sheet at May 28, 2022.

[2] Included in cash flows from investing activities in the accompanying condensed consolidated statement of cash flows for the six months ended May 28, 2022.