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Goodwill and Other Intangible Assets
9 Months Ended
Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets
9. GOODWILL AND OTHER INTANGIBLE ASSETS

The following table summarizes the activity related to the carrying amount of goodwill during the nine months ended September 30, 2017 (in thousands):

 

     2017  

Beginning balance, January 1

   $ 10,523  

Goodwill recognized from acquisition of SC Company

     57,938  
  

 

 

 

Ending balance, September 30

   $ 68,461  
  

 

 

 

Intangible assets acquired from SC Company on July 31, 2017 consist of the following at September 30, 2017:

 

    
Net Carrying
Amount

(in thousands)
     Amortization
Period
 
            (in months)  

Intangible assets:

     

Customer backlog

   $ 4,000        12  

Trade names and trademarks

     900        12  
  

 

 

    

Total intangible assets

     4,900     
  

 

 

    

Accumulated amortization:

     

Customer backlog

     (683   

Trade name

     (134   
  

 

 

    

Total accumulated amortization

     (817   
  

 

 

    

Intantible assets, net

   $ 4,083     
  

 

 

    

Intangible asset amounts were determined based on the estimated economics of the asset and are amortized over the estimated useful lives on a straight-line bases, which approximates the pattern in which the economic benefits are expected to be received. Amortization expense for the quarterly period ended September 31, 2017 was $0.8 million.