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Note 1 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   

Years

 

Tractors

   

5

   

Trailers

   

7

   

Refrigerated containers

   

12

   

Service and other equipment

 

3

-

15

 

Buildings and improvements

 

20

-

40