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Goodwill and Intangible Assets
12 Months Ended
Dec. 31, 2013
Goodwill and Intangible Assets  
Goodwill and Intangible Assets

6. Goodwill and Intangible Assets

        Goodwill and intangible assets consisted of the following at December 31:

 
  2013   2012  
(in thousands)
  Gross
Carrying
Amount
  Accumulated
Amortization
  Net
Carrying
Amount
  Gross
Carrying
Amount
  Accumulated
Amortization
  Net
Carrying
Amount
 

Goodwill

                                     

T&D

  $ 40,042   $   $ 40,042   $ 40,042   $   $ 40,042  

C&I

    6,557         6,557     6,557         6,557  

Amortizable Intangible Assets

                                     

Backlog

    521     521         521     521      

Customer relationships

    4,015     2,372     1,643     4,015     2,037     1,978  

Indefinite-lived Intangible Assets

                                     

Trade names

    8,556         8,556     8,556         8,556  
                           

 

  $ 59,691   $ 2,893   $ 56,798   $ 59,691   $ 2,558   $ 57,133  
                           
                           

        Customer relationships are being amortized on a straight-line method over an estimated useful life of 12 years, with 4.9 years remaining, and have been determined to have no residual value. Trade names have been determined to have indefinite lives and, therefore, are not being amortized. Intangible asset amortization expense was $0.3 million for each of the years ended December 31, 2013, 2012 and 2011. Intangible asset amortization expense for the years subsequent to December 31, 2013 is expected to be approximately $0.3 million for each of the years from 2014 to 2018.