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Goodwill and Other Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of the Changes in the Carrying Amount of Goodwill
The changes in the carrying amount of goodwill for the years ended December 31, 2012 and 2011 were as follows (in thousands):
 
 
Goodwill
Ending balance, December 31, 2010 and 2011
$
452,914

Purchase price allocation associated with Blaze acquisition
15,068

Purchase price allocation associated with Cotendo acquisition
233,828

Purchase price allocation associated with FastSoft acquisition
8,825

Purchase price allocation associated with Verivue acquisition
20,690

Ending balance, December 31, 2012
$
731,325
Schedule of Other Intangible Assets
Other intangible assets that are subject to amortization consist of the following (dollars in thousands):
 
 
December 31, 2012
 
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Carrying
Amount
 
Weighted Average Amortization period in years
Completed technologies
$
71,531

 
$
(32,842
)
 
$
38,689

 
6
Customer relationships
104,700

 
(68,702
)
 
35,998

 
9
Non-compete agreements
14,770

 
(7,645
)
 
7,125

 
5
Trademarks and trade names
3,700

 
(958
)
 
2,742

 
9
Acquired license rights
490

 
(490
)
 
—

 
10
Total
$
195,191

 
$
(110,637
)
 
$
84,554

 
 

 
December 31, 2011
 
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Carrying
Amount
 
Weighted Average Amortization period in years
Completed technologies
$
36,731

 
$
(22,913
)
 
$
13,818

 
6
Customer relationships
88,700

 
(60,202
)
 
28,498

 
9
Non-compete agreements
8,340

 
(5,270
)
 
3,070

 
4
Trademarks
800

 
(800
)
 
—

 
4
Acquired license rights
490

 
(490
)
 
—

 
10
Total
$
135,061

 
$
(89,675
)
 
$
45,386