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Note M - Leases - Lease Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Lease revenue $ 2,148 $ 2,367
Trucks under Operating Lease [Member]    
Lease revenue 2,049 2,138
Dock Space under Operating Lease [Member]    
Lease revenue $ 99 $ 229