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Note 10 - New Accounting Pronouncements (Tables)
3 Months Ended
Mar. 31, 2018
Notes Tables  
Disaggregation of Revenue [Table Text Block]
Commercial vehicle sales revenue
  $
773,100
 
Parts revenue
   
223,354
 
Commercial vehicle repair service revenue
   
176,941
 
Finance revenue
   
2,336
 
Insurance revenue
   
2,405
 
Other revenue
   
5,121
 
Total revenue
  $
1,183,257