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Note 18 - Discontinued Operations (Details Textual) - Discontinued Operations, Disposed of by Sale [Member] - Zenith Freight Lines [Member] - USD ($)
6 Months Ended 12 Months Ended
Nov. 26, 2022
Nov. 26, 2022
Nov. 27, 2021
Nov. 28, 2020
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax, Net of Working Capital Adjustment $ 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 $ 289,000 $ 49,000
Logistical Services [Member] | Subsidiaries [Member]        
Related Party Transaction, Amounts of Transaction   9,121,000 $ 31,329,000 $ 26,967,000
Disposal Group, Including Discontinued Operation, Operating Expense   27,604,000    
Other Current Liabilities and Accrued Expenses [Member]        
Disposal Group, Including Discontinued Operation, Reserve for Pre-disposal Workers'' Compensation $ 639 $ 639