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Note 12 - Discontinued Operations (Details Textual) - Discontinued Operations, Disposed of by Sale [Member] - Zenith Freight Lines [Member] - USD ($)
3 Months Ended 6 Months Ended
May 27, 2023
May 28, 2022
May 28, 2022
Feb. 26, 2022
May 27, 2023
May 28, 2022
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax, Net of Working Capital Adjustment     $ 53,254 $ 52,534    
Disposal Group, Service Agreement with Buyer for Continuation of Services, Term (Year)           7 years
Disposal Group, Including Discontinued Operation, Interest Expense           $ 78,000
Logistical Services [Member] | Subsidiaries [Member]            
Related Party Transaction, Amounts of Transaction           9,121,000
Disposal Group, Including Discontinued Operation, Operating Expense $ 6,717,000 $ 9,546,000     $ 14,094,000 $ 9,546,000