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Note 11 - Business Segments (Tables)
3 Months Ended
Mar. 31, 2014
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   

Three Months Ended March 31,

 

 

 

2014

   

2013

 
(In thousands)                

Operating revenue:

               

Truckload revenue, net of fuel surcharge revenue

  $ 97,530     $ 94,965  

Truckload fuel surcharge revenue

    26,534       26,769  

Total Truckload revenue

    124,064       121,734  
                 

Logistics revenue, net of intermodal fuel surcharge revenue(1)

    30,009       37,760  

Intermodal fuel surcharge revenue

    5,336       4,980  

Total Logistics revenue

    35,345       42,740  
                 

Total operating revenue

  $ 159,409     $ 164,474  
                 

Operating income:

               

Truckload

  $ 7,500     $ 10,000  

Logistics

    1,140       2,538  

Total operating income

  $ 8,640     $ 12,538