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Goodwill and Intangible Assets
6 Months Ended
Jun. 30, 2011
Goodwill and Intangible Assets [Abstract]  
Goodwill and Intangible Assets
3.  
Goodwill and Intangible Assets
   
Goodwill represents the excess of the purchase price of each acquisition over the estimated fair value of the net assets acquired. The Company completes an annual goodwill impairment test as of July 1. The 2010 impairment test did not result in any impairment losses. There is no goodwill impairment for any of the periods presented in the Company’s financial statements.
   
The following is a rollforward of goodwill from December 31, 2010 to June 30, 2011 by reportable segment (in thousands):
                                 
    LTL     TL     TMS     Total  
Goodwill balance as of December 31, 2010
  $ 185,406     $ 25,776     $ 35,706     $ 246,888  
Acquisition of Morgan Southern
          16,385             16,385  
Acquisition of Bruenger
          3,345             3,345  
 
                       
Goodwill balance as of June 30, 2011
  $ 185,406     $ 45,506     $ 35,706     $ 266,618  
 
                       
   
Intangible assets consist of customer relationships acquired from business acquisitions. Intangible assets at June 30, 2011 and December 31, 2010 are as follows (in thousands):
                                                 
    June 30, 2011     December 31, 2010  
    Gross             Net     Gross             Net  
    Carrying     Accumulated     Carrying     Carrying     Accumulated     Carrying  
    Amount     Amortization     Value     Amount     Amortization     Value  
Customer relationships — TL
  $ 2,300     $ 1,752     $ 548     $ 1,800     $ 1,530     $ 270  
Customer relationships — LTL
    800       240       560       800       160       640  
Customer relationships — TMS
    546       286       260       546       232       314  
 
                                   
Total customer relationships
  $ 3,646     $ 2,278     $ 1,368     $ 3,146     $ 1,922     $ 1,224  
 
                                   
   
The customer relationships intangible assets are amortized over a five-year useful life.