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Note 12 - Discontinued Operations (Details Textual) - Discontinued Operations, Disposed of by Sale [Member] - Zenith Freight Lines [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended
Aug. 26, 2023
Aug. 27, 2022
Nov. 26, 2022
Aug. 26, 2023
Aug. 27, 2022
Aug. 27, 2022
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax, Net of Working Capital Adjustment   $ 193 $ (52,534)   $ (53,061)  
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax, Net of Working Capital Adjustment   (193) $ 52,534   $ 53,061  
Disposal Group, Service Agreement with Buyer for Continuation of Services, Term (Year)         7 years  
Disposal Group, Including Discontinued Operation, Interest Expense         $ 78  
Logistical Services [Member] | Subsidiaries [Member]            
Related Party Transaction, Amounts of Transaction         $ 9,121  
Disposal Group, Including Discontinued Operation, Operating Expense $ 6,278 $ 10,307   $ 21,429   $ 19,852