XML 42 R28.htm IDEA: XBRL DOCUMENT v3.3.1.900
Note 1 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2015
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
Years
 
Tractors
    5    
Trailers
    7    
Service and other equipment
   3 - 15  
Buildings and improvements
   20 - 40