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Goodwill and Intangible Assets
3 Months Ended
Mar. 31, 2019
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 three months ended March 31, 2019 are as follows (amounts in thousands):
 
Business
 
Consumer
 
Consolidated
Balance as of December 31, 2018
$
87,007

 
$
8,024

 
$
95,031

Adjustments to goodwill:
 
 
 
 
 
Foreign exchange adjustment
(44
)
 

 
(44
)
Balance as of March 31, 2019
$
86,963

 
$
8,024

 
$
94,987


Intangible Assets
Intangible assets are summarized as follows (amounts in thousands):
 
As of March 31, 2019
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net Carrying Amount
 
Weighted
Average
Amortization
Period
Amortizing intangible assets:
 
 
 
 
 
 
 
Technology
$
30,414

 
$
(24,006
)
 
$
6,408

 
5.3 years
Customer relationships
16,964

 
(12,073
)
 
4,891

 
8.4 years
Trade names
1,284

 
(1,284
)
 

 
2.1 years
Non-compete agreements
1,435

 
(1,435
)
 

 
2.3 years
Patents
2,343

 
(592
)
 
1,751

 
12.6 years
Other
262

 
(235
)
 
27

 
2.7 years
Total
$
52,702

 
$
(39,625
)
 
$
13,077

 
 

 
As of December 31, 2018
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net Carrying Amount
 
Weighted
Average
Amortization
Period
Amortizing intangible assets:
 
 
 
 
 
 
 
Technology
$
30,447

 
$
(23,615
)
 
$
6,832

 
5.3 years
Customer relationships
17,219

 
(11,786
)
 
5,433

 
8.4 years
Trade names
1,286

 
(1,286
)
 

 
2.1 years
Non-compete agreements
1,436

 
(1,436
)
 

 
2.3 years
Patents
2,074

 
(534
)
 
1,540

 
12.4 years
Other
262

 
(235
)
 
27

 
2.7 years
Total
$
52,724

 
$
(38,892
)
 
$
13,832

 
 
 
Amortization expense is calculated over the estimated useful life of the asset. Aggregate amortization expense for intangible assets was $0.7 million for the three months ended March 31, 2019 and 2018, respectively. For the three months ended March 31, 2019 and 2018, 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
Remaining 2019
$
2,167

2020
2,702

2021
2,490

2022
2,128

2023
884

Thereafter
2,706

Total
$
13,077