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Goodwill and Intangible Assets, Net
3 Months Ended
Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets, Net
Goodwill and Intangible Assets, Net

Intangible assets consist primarily of existing technology, patent license and non-competition agreements acquired in business combinations. Acquired intangibles are amortized on a straight-line basis over the respective estimated useful lives of the assets.

The carrying values of intangible assets are as follows (in thousands):
 
 
 
 
 
March 31, 2014
 
December 31, 2013
 
Estimated Lives
 
Cost
 
Accumulated Amortization
 
Net Book Value
 
Accumulated Amortization
 
Net Book Value
Existing technology
7 years
 
$
1,910

 
$
(978
)
 
$
932

 
$
(909
)
 
$
1,001

Patent license
14 years
 
1,388

 
(347
)
 
1,041

 
(323
)
 
1,065

Non-competition agreements and other
3 years
 
171

 
(143
)
 
28

 
(138
)
 
33

     Total intangibles subject to amortization
 
 
$
3,469

 
$
(1,468
)
 
2,001

 
$
(1,370
)
 
2,099

Intangible assets not subject to amortization
 
 
 
 
 
 
295

 
 
 
295

     Total intangible assets, net
 
 
 
 
 
 
$
2,296

 
 
 
$
2,394



Intangibles amortization expense was $0.1 million for the three months ended March 31, 2014 and 2013.

As of March 31, 2014, the Company expects amortization expense in future periods to be as follows (in thousands):
Remainder of 2014
$
294

2015
386

2016
373

2017
282

2018
100

2019 and thereafter
566

Total expected future amortization expense
$
2,001



Goodwill, which is not subject to amortization, totaled $0.3 million as of March 31, 2014 and December 31, 2013.