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Note E - Segment Information (Tables)
3 Months Ended
Mar. 31, 2015
Segment Reporting [Abstract]  
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]
   

Three Months Ended March 31,

 
   

2015

   

2014

 
   

Amount

   

%

   

Amount

   

%

 
   

(in thousands, except percentage data)

 
                                 

Truckload Services revenue

  $ 72,529       87.7     $ 69,447       92.7  

Brokerage and Logistics Services revenue

    10,155       12.3       5,449       7.3  

Total revenues

  $ 82,684       100.0     $ 74,896       100.0