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Note E - Segment Information (Tables)
9 Months Ended
Sep. 30, 2016
Notes Tables  
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]
   
Three Months Ended September 30,
   
Nine Months Ended September 30,
 
   
2016
   
2015
   
2016
   
2015
 
   
Amount
   
%
   
Amount
   
%
   
Amount
   
%
   
Amount
   
%
 
   
(in thousands, except percentage data)
 
Truckload Services revenue
  $ 85,286       88.9     $ 80,220       87.1     $ 254,262       88.1     $ 232,261       87.4  
Brokerage and Logistics Services revenue
    10,640       11.1       11,856       12.9       34,234       11.9       33,552       12.6  
Total revenues
  $ 95,926       100.0     $ 92,076       100.0     $ 288,496       100.0     $ 265,813       100.0