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Intangible Asset and Goodwill (Tables)
 9 Months Ended
Sep. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of changes in carrying amount of goodwill by reporting unit
The following table presents goodwill balances and adjustments to those balances for each of the reportable segments for the nine months ended September 30, 2013:
Reportable Segment:
 
December 31,
2012
 
Additions to Goodwill
 
Impairment Charge of Goodwill
 
September 30,
2013
 
 
(In thousands)
MID
 
$
19,905

 
$
—

 
$
—

 
$
19,905

CTO
 
8,070

 
—

 
(8,070
)
 
—

All Other
 
96,994

 
—

 
—

 
96,994

Total
 
$
124,969

 
$
—

 
$
(8,070
)
 
$
116,899


 
 
As of
 
 
September 30, 2013
Reportable Segment:
 
Gross Carrying Amount
 
Accumulated Impairment Losses
 
Net Carrying Amount
 
 
(In thousands)
MID
 
$
19,905

 
$
—

 
$
19,905

CTO
 
8,070

 
(8,070
)
 
—

All Other
 
110,694

 
(13,700
)
 
96,994

Total
 
$
138,669

 
$
(21,770
)
 
$
116,899
Components of intangible assets
The components of the Company’s intangible assets as of September 30, 2013 and December 31, 2012 were as follows:
 
 
 
As of September 30, 2013
 
Useful Life
 
Gross Carrying
 Amount
 
Accumulated
 Amortization
 
Net Carrying
 Amount
 
 
 
(In thousands)
Existing technology
3 to 10 years
 
$
195,345

 
$
(77,105
)
 
$
118,240

Customer contracts and contractual relationships
1 to 10 years
 
32,650

 
(18,509
)
 
14,141

Non-compete agreements
3 years
 
300

 
(233
)
 
67

Total intangible assets
 
 
$
228,295


$
(95,847
)
 
$
132,448

 
 
 
As of December 31, 2012
 
Useful Life
 
Gross Carrying
 Amount
 
Accumulated
 Amortization
 
Net Carrying
 Amount
 
 
 
(In thousands)
Existing technology
3 to 10 years
 
$
191,815

 
$
(57,240
)
 
$
134,575

Customer contracts and contractual relationships
1 to 10 years
 
32,650

 
(14,194
)
 
18,456

Non-compete agreements
3 years
 
300

 
(158
)
 
142

Total intangible assets
 
 
$
224,765

 
$
(71,592
)
 
$
153,173
Estimated future amortization expense of intangible assets
The estimated future amortization expense of intangible assets as of September 30, 2013 was as follows (amounts in thousands):
Years Ending December 31:
Amount
2013 (remaining 3 months)
$
9,352

2014
28,266

2015
27,115

2016
26,081

2017
24,625

Thereafter
17,009

 
$
132,448