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Note 3 - Property and Equipment (Tables)
3 Months Ended
Mar. 31, 2021
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
March 31,
   
December 31,
 
   
2021
   
2020
 
                 
Trucks and vehicles
  $
57,090
    $
57,224
 
Other equipment
   
1,324
     
1,319
 
Buildings and improvements
   
3,176
     
3,176
 
Land
   
378
     
378
 
Total property and equipment
   
61,968
     
62,097
 
Accumulated depreciation
   
(42,933
)    
(41,780
)
Property and equipment, 
net
  $
19,035
    $
20,317