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Goodwill and Intangible Assets
12 Months Ended
Dec. 31, 2013
Goodwill and Intangible Assets [Abstract]  
Goodwill and Intangible Assets
(6)Goodwill and Intangible Assets

The changes in the carrying amount of goodwill for the years ended December 31, 2013 and 2012 are as follows:

Balance as of December 31, 2011
 
$
36,731
 
Translation effect
  
581
 
Balance as of December 31, 2012
  
37,312
 
Translation effect
  
1,358
 
Balance as of December 31, 2013
 
$
38,670
 

Acquired intangible assets, which are amortized, consist of the following:

 
 
  
As of December 31, 2013
 
 
 
Amortization Period
  
 
Gross Carrying Amount
  
Accumulated Amortization
  
Net Carrying Amount
 
 
 
  
  
  
 
Technology-based intangibles
 20 years  
$
4,192
  
$
(786
)
 
$
3,406
 
Customer-related intangibles
 
10 - 15 years
   
814
   
(209
)
  
605
 
 
    
$
5,006
  
$
(995
)
 
$
4,011
 


 
 
  
As of December 31, 2012
 
 
 
Amortization Period
  
 
Gross Carrying Amount
  
Accumulated Amortization
  
Net Carrying Amount
 
 
 
  
  
  
 
Technology-based intangibles
 
20 years
  
$
4,011
  
$
(552
)
 
$
3,459
 
Customer-related intangibles
 
10 - 15 years
   
778
   
(146
)
  
632
 
 
    
$
4,789
  
$
(698
)
 
$
4,091
 

The change in the gross carrying amount is due to the impact of foreign currency.

Amortization expense amounted to $255, $247 and $298 for the years ended December 31, 2013, 2012 and 2011, respectively.

Amortization expense related to current intangible assets is expected to be approximately $265 in each of the next five years.