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Goodwill and Intangible Assets
9 Months Ended
Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets
Goodwill and Intangible Assets
Goodwill
The changes in the carrying amount of goodwill for the nine months ended September 30, 2015 are as follows (amounts in thousands):
 
Business
 
Consumer
 
Consolidated
Balance as of December 31, 2014
$
72,824

 
$
8,024

 
$
80,848

Adjustments to goodwill:
 
 
 
 
 
Foreign exchange adjustment
(461
)
 

 
(461
)
Balance as of September 30, 2015
$
72,363

 
$
8,024

 
$
80,387

Intangible Assets
Intangible assets are summarized as follows (see Note 8) (amounts in thousands):
 
As of September 30, 2015
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net Carrying Amount
 
Weighted
Average
Amortization
Period
Amortizing intangible assets:
 
 
 
 
 
 
 
Technology
$
28,005

 
$
(14,486
)
 
$
13,519

 
5.3 years
Customer relationships
16,008

 
(6,093
)
 
9,915

 
7.9 years
Trade names
1,287

 
(1,202
)
 
85

 
2.8 years
Non-compete agreements
1,446

 
(879
)
 
567

 
2.3 years
Patents
3,440

 
(758
)
 
2,682

 
9.7 years
Other
312

 
(271
)
 
41

 
3.0 years
Total
$
50,498

 
$
(23,689
)
 
$
26,809

 
 
 
As of December 31, 2014
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net Carrying Amount
 
Weighted
Average
Amortization
Period
Amortizing intangible assets:
 
 
 
 
 
 
 
Technology
$
27,844

 
$
(11,303
)
 
$
16,541

 
5.3 years
Customer relationships
16,008

 
(4,055
)
 
11,953

 
7.9 years
Trade names
1,287

 
(817
)
 
470

 
2.8 years
Non-compete agreements
1,446

 
(625
)
 
821

 
2.3 years
Patents
3,290

 
(500
)
 
2,790

 
9.9 years
Other
312

 
(267
)
 
45

 
3.0 years
Total
$
50,187

 
$
(17,567
)
 
$
32,620

 
 
 
Amortization expense is calculated over the estimated useful life of the asset. Aggregate amortization expense for intangible assets was $2.0 million and $1.3 million for the three months ended September 30, 2015 and 2014, respectively. Aggregate amortization expense for intangible assets was $6.1 million and $3.5 million for the nine months ended September 30, 2015 and 2014, respectively. For the three and nine months ended September 30, 2015 and 2014, respectively, a portion of this amortization is included in cost of revenue. Estimated amortization expense for the next five years is as follows (amounts in thousands):  
 
Estimated Amortization Expense
2015
$
1,846

2016
6,774

2017
4,956

2018
2,837

2019
2,830

Thereafter
7,566

Total
$
26,809