Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2012

Goodwill and Other Intangible Assets [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill for the three and nine months ended September 30, 2012 were as follows (in thousands):

Balance as of December 31, 2011	$	452,914
Purchase price allocation associated with Blaze acquisition	15,068
Purchase price allocation associated with Cotendo acquisition	241,646
Balance as of March 31, 2012	709,628
Purchase price adjustment associated with Cotendo acquisition	40
Balance as of June 30, 2012	709,668
Purchase price allocation associated with FastSoft acquisition	12,233
Purchase price adjustment associated with Cotendo acquisition	(300		)
Balance as of September 30, 2012	$	721,601

Schedule of Other Intangible Assets

Other intangible assets that are subject to amortization consist of the following (in thousands except for years):

	September 30, 2012
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Amortization period in years
Completed technology	$	66,931	$	(30,229	)	$	36,702	6
Customer relationships	102,100		(66,657		)	35,443		9
Non-compete agreements	14,440		(6,999		)	7,441		5
Trademarks and trade names	3,700		(911		)	2,789		9
Acquired license rights	490		(490		)	—		10
Total	$	187,661	$	(105,286	)	$	82,375

	December 31, 2011
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Amortization period in years
Completed technology	$	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 and trade names	800		(800		)	—		4
Acquired license rights	490		(490		)	—		10
Total	$	135,061	$	(89,675	)	$	45,386