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Goodwill and Intangible Assets, net
6 Months Ended
Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets, net
Goodwill and Intangible Assets, net
The changes in the carrying amount of goodwill for the six months ended June 30, 2015 and 2014 are as follows:
 
Six Months Ended 
 June 30,
 
2015
 
2014
Beginning balance
$
101,059

 
$
13,823

Acquisitions
18,134

 
21,042

Foreign currency translation adjustment
(228
)
 

Ending balance
$
118,965

 
$
34,865


No goodwill or accumulated impairment losses existed as of June 30, 2015 and December 31, 2014.
Intangible assets consist of the following at June 30, 2015:
 
Weighted Average Useful Life (Years)
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net
Patents, related technologies and know-how
12.6
 
$
75,318

 
$
(13,038
)
 
$
62,280

Customer relationships
6.5
 
10,700

 
(1,772
)
 
8,928

Trademarks
8.4
 
5,900

 
(655
)
 
5,245

Covenant not to compete
2.0
 
390

 
(65
)
 
325

In-process research and development
 
 
85,456

 

 
85,456

Total
 
 
$
177,764

 
$
(15,530
)
 
$
162,234


Intangible assets consist of the following at December 31, 2014:
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net
Patents, related technologies and know-how
$
41,872

 
$
(10,849
)
 
$
31,023

Customer relationships
10,700

 
(806
)
 
9,894

Trademarks
5,900

 
(298
)
 
5,602

In-process research and development
19,428

 

 
19,428

Total
$
77,900

 
$
(11,953
)
 
$
65,947


Amortization expense was $1,981 and $687 for the three months ended June 30, 2015 and 2014, respectively and $3,577 and $1,374 for the six months ended June 30, 2015 and 2014, respectively.