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Goodwill and Other Intangibles
3 Months Ended
Mar. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangibles
5. Goodwill and Other Intangibles

There were no changes in the goodwill carrying amount of $15.0 million during the three months ended March 31, 2014.

The components of our identifiable intangible assets were as follows:

 

     March 31, 2014      December 31, 2013  
     Gross             Net      Gross             Net  
     Carrying      Accumulated      Carrying      Carrying      Accumulated      Carrying  
     Value      Amortization      Value      Value      Amortization      Value  
     (in thousands)  

Patents

   $ 5,691       $ 2,094       $ 3,597       $ 5,679       $ 1,932       $ 3,747   

Trademarks and technology licenses

     1,416         970         446         1,414         935         479   

Customer relationships

     2,837         1,581         1,256         2,835         1,441         1,394   

Other intangible assets

     971         512         459         971         447         524   
  

 

 

    

 

 

    

 

 

    

 

 

    

 

 

    

 

 

 

Total identifiable intangible assets

   $ 10,915       $ 5,157       $ 5,758       $ 10,899       $ 4,755       $ 6,144   
  

 

 

    

 

 

    

 

 

    

 

 

    

 

 

    

 

 

 

 

These intangible assets are being amortized over their useful lives ranging from 1 to 13 years. The weighted-average amortization period for these intangibles as of March 31, 2014 is 6.9 years. Amortization expense is included in general and administrative expense and is as follows:

 

     Three months ended March 31,  
     2014      2013  
     (in thousands)  

Amortization expense

   $ 399       $ 262   
  

 

 

    

 

 

 

Estimated amortization expense for the remainder of 2014 and each of the five succeeding fiscal years is as follows:

 

     2014      2015      2016      2017      2018      2019  
     (in thousands)  

Amortization expense

   $ 1,011       $ 1,009       $ 866       $ 608       $ 493       $ 383