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Identifiable Intangible Assets and Goodwill
3 Months Ended
Mar. 31, 2015
Finite-Lived Intangible Assets [Line Items]  
Goodwill and Intangible Assets Disclosure [Text Block]
Goodwill and Purchased Intangible Assets
Goodwill
The changes in the carrying amount of goodwill are as follows:
Balance at December 31, 2014
 
$
22,495

Goodwill acquired during period
 

Other
 

Balance at March 31, 2015
 
$
22,495



Purchased Intangible Assets
Purchased intangible assets as of March 31, 2015 and December 31, 2014 are as follows:


Gross Carrying Amount

Accumulated Amortization

Net
March 31, 2015







 

Finite-lived intangibles:
 
 
 
 
 
 
Developed technology

$
59,831


$
53,819


$
6,012

Customer and distributor relationships

9,560


7,906


1,654

Trade names

4,361


3,500


861

Total identifiable intangible assets

$
73,752


$
65,225


$
8,527

December 31, 2014

 


 


 

Finite-lived intangibles:
 
 
 
 
 
 
Developed technology

$
59,831


$
53,417


$
6,414

Customer and distributor relationships

9,560


7,818


1,742

Trade names

4,361


3,475


886

Total identifiable intangible assets

$
73,752


$
64,710


$
9,042


Intangible asset amortization expense for the three months ended March 31, 2015 and 2014 were $515 and $670, respectively. Assuming no change in the gross carrying value of identifiable intangible assets and estimated lives, estimated amortization expense for the remainder of 2015 will be $1,535, and for each of the next five years estimated amortization expense amounts to $1,941 for 2016, $1,553 for 2017, $1,117 for 2018, $1,117 for 2019, and $914 for 2020.