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Note E - Segment Information (Tables)
9 Months Ended
Sep. 30, 2013
Policy Text Block [Abstract]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   

Three Months Ended September 30,

   

Nine Months Ended September 30,

 
   

2013

   

2012

   

2013

   

2012

 
   

Amount

   

%

   

Amount

   

%

   

Amount

   

%

   

Amount

   

%

 
   

(in thousands, except percentage data)

 
                                                                 

Truckload Services revenue

  $ 73,857       93.3     $ 68,518       92.1     $ 219,471       92.4     $ 204,665       91.7  

Brokerage and Logistics Services revenue

    5,306       6.7       5,914       7.9       18,177       7.6       18,635       8.3  

Total revenues

  $ 79,163       100.0     $ 74,432       100.0     $ 237,648       100.0     $ 223,300       100.0