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Note 5 - Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment [Table Text Block]
(in thousands)
 
Estimated
Useful Lives
(years)
   
2012
   
2011
 
Revenue equipment
  3 -
10
    $ 331,761     $ 351,433  
Communications equipment
  5 -
10
      13,089       12,706  
Land and improvements
  0 -
10
      16,658       18,910  
Buildings and leasehold improvements
  7 -
40
      41,050       39,025  
Construction in-progress
    -         1,310       1,221  
Other
  2 -
7
      16,079       16,756  
              $ 419,947     $ 440,051