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Note 7 - Segment Information (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   

Truck

Segment

   

All

Other

   

Total

 
                         

As of and for the three months ended September 30, 2022

                       
                         

Revenues from external customers

  $ 1,859,823     $ 4,463     $ 1,864,286  

Segment operating income

    126,770       267       127,037  

Segment income before taxes

    120,373       174       120,547  

Segment assets

    3,688,151       54,428       3,742,579  
                         

For the nine months ended September 30, 2022

                       
                         

Revenues from external customers

  $ 5,205,802     $ 12,927     $ 5,218,729  

Segment operating income

    368,596       963       369,559  

Segment income before taxes

    380,397       682       381,079  
                         

As of and for the three months ended September 30, 2021

                       
                         

Revenues from external customers

  $ 1,261,885     $ 4,636     $ 1,266,521  

Segment operating income

    89,841       328       90,169  

Segment income before taxes

    91,595       254       91,849  

Segment assets

    2,722,614       54,715       2,777,329  
                         

For the nine months ended September 30, 2021

                       
                         

Revenues from external customers

  $ 3,801,675     $ 12,667     $ 3,814,342  

Segment operating income

    217,953       1,232       219,185  

Segment income before taxes

    222,218       1,017       223,235