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Note 1 - Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2015
Notes Tables  
Property, Plant and Equipment [Table Text Block]
Asset Class
 
Estimated Asset Life
(in years)
         
Service vehicles
  3 -
5
Office furniture and equipment
  3 -
7
Revenue equipment
  3 -
12
Structures and improvements
  5 -
40