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Note M - Leases - Lease Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Lease revenue $ 2,367 $ 1,739
Trucks under Operating Lease [Member]    
Lease revenue 2,138 1,570
Dock Space under Operating Lease [Member]    
Lease revenue $ 229 $ 169