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Note 17 - Segments (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
  

Truck

  

All

     
  

Segment

  

Other

  

Totals

 

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 
             

2018

            

Revenues from external customers

 $5,488,787  $17,403  $5,506,190 

Interest income

  1,376   -   1,376 

Interest expense

  20,850   208   21,058 

Depreciation and amortization

  70,170   319   70,489 

Segment operating income

  202,725   126   202,851 

Segment income (loss) from continuing operations before taxes

  183,251   (82)  183,169 

Segment assets

  3,166,174   35,176   3,201,350 

Goodwill

  288,831   2,560   291,391 

Expenditures for segment assets

  238,229   31   238,260