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Goodwill and Intangible Assets (Tables)
 6 Months Ended
Jun. 30, 2012
Goodwill and Intangible Assets [Abstract]  
Change in carrying amount of goodwill
The change in the carrying amount of goodwill for the six months ended June 30, 2012, is as follows:

Balance as of December 31, 2011
 
$
36,731
 
Translation effect
 
 
(793
)
Balance as of June 30, 2012
 
$
35,938
 
 
Summary of acquired amortizable intangible assets
Acquired intangible assets, which are amortized, consist of the following:

 
As of June 30, 2012
 
Amortization Period
 
Gross Carrying Amount
 
 
Accumulated Amortization
 
 
Net Carrying Amount
 
 
 
 
 
 
 
 
 
 
Technology-based intangibles
20 years
 
$
3,827
 
 
$
(431
)
 
$
3,396
 
Customer-related intangibles
10 - 15 years
 
 
743
 
 
 
(114
)
 
 
629
 
 
$
4,570
 
 
$
(545
)
 
$
4,025
 

 
As of December 31, 2011
 
Amortization Period
 
Gross Carrying Amount
 
 
Accumulated Amortization
 
 
Net Carrying Amount
 
 
 
 
 
 
 
 
 
 
Technology-based intangibles
20 years
 
$
3,933
 
 
$
(344
)
 
$
3,589
 
Customer-related intangibles
10 - 15 years
 
 
763
 
 
 
(91
)
 
 
672
 
 
$
4,696
 
 
$
(435
)
 
$
4,261