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Note K - Notes Payable (Details Textual)
$ in Millions
1 Months Ended 6 Months Ended
Jun. 30, 2022
USD ($)
Jun. 30, 2022
USD ($)
Jun. 14, 2022
USD ($)
Metropolitan Trucking Inc and Related Entities [Member]      
Business Acquisition, Installment Obligations Assumed     $ 12.3
Trailers [Member] | Minimum [Member] | Metropolitan Trucking Inc and Related Entities [Member]      
Business Acquisition, Assumed Obligations, Number of Monthly Installments 24    
Trailers [Member] | Maximum [Member] | Metropolitan Trucking Inc and Related Entities [Member]      
Business Acquisition, Assumed Obligations, Number of Monthly Installments 34    
Trucks [Member] | Minimum [Member] | Metropolitan Trucking Inc and Related Entities [Member]      
Business Acquisition, Assumed Obligations, Number of Monthly Installments 1    
Trucks [Member] | Maximum [Member] | Metropolitan Trucking Inc and Related Entities [Member]      
Business Acquisition, Assumed Obligations, Number of Monthly Installments 36    
Equipment Financing [Member] | Revenue Equipment [Member]      
Notes Payable, Total $ 53.8 $ 53.8  
Equipment Financing [Member] | Trailers [Member] | Minimum [Member]      
Notes Payable, Number of Monthly Installments   36  
Equipment Financing [Member] | Trailers [Member] | Maximum [Member]      
Notes Payable, Number of Monthly Installments   120