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Note 1 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2021
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