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Note 16 - Segments (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
  

Truck

  

All

     
  

Segment

  

Other

  

Totals

 

2021

            

Revenues from external customers

 $5,109,070  $17,072  $5,126,142 

Interest income

  657      657 

Interest expense

  2,119   308   2,427 

Depreciation and amortization

  53,096   258   53,354 

Segment operating income

  307,394   1,642   309,036 

Segment income from continuing operations before taxes

  312,350   1,333   313,683 

Segment assets

  3,068,365   51,612   3,119,977 

Goodwill

  367,771   2,560   370,331 

Expenditures for segment assets

  163,624   3,553   167,177 
             

2020

            

Revenues from external customers

 $4,721,058  $14,882  $4,735,940 

Interest income

  713      713 

Interest expense

  9,444   283   9,727 

Depreciation and amortization

  57,162   294   57,456 

Segment operating income

  153,841   764   154,605 

Segment income from continuing operations before taxes

  151,222   501   151,723 

Segment assets

  2,939,390   46,003   2,985,393 

Goodwill

  289,582   2,560   292,142 

Expenditures for segment assets

  135,956   244   136,200 
             

2019

            

Revenues from external customers

 $5,794,155  $15,692  $5,809,847 

Interest income

  1,680      1,680 

Interest expense

  30,201   286   30,487 

Depreciation and amortization

  55,036   336   55,372 

Segment operating income (loss)

  216,691   (286)  216,405 

Segment income from continuing operations before taxes

  188,122   1,401   189,523 

Segment assets

  3,369,517   37,812   3,407,329 

Goodwill

  289,582   2,560   292,142 

Expenditures for segment assets

  292,980   513   293,493