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Note 6 - Segment Information (Tables)
9 Months Ended
Sep. 30, 2023
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, 2023

                       
                         

Revenues from external customers

  $ 1,976,395     $ 4,345     $ 1,980,740  

Segment operating income

    121,675       (54 )     121,621  

Segment income before taxes

    107,614       (54 )     107,560  

Segment assets

    4,163,261       54,792       4,218,053  
                         

For the nine months ended September 30, 2023

                       
                         

Revenues from external customers

  $ 5,883,127     $ 12,432     $ 5,895,559  

Segment operating income

    391,870       386       392,256  

Segment income before taxes

    356,839       386       357,225  
                         

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