Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2012

Goodwill and Other Intangible Assets [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill for the three and six months ended June 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

Schedule of Other Intangible Assets

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

	June 30, 2012
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Amortization period in years
Completed technology	$	63,631	$	(27,615	)	$	36,016	6
Customer relationships	102,100		(64,579		)	37,521		9
Non-compete agreements	14,440		(6,357		)	8,083		5
Trademarks and trade names	3,300		(864		)	2,436		9
Acquired license rights	490		(490		)	—		10
Total	$	183,961	$	(99,905	)	$	84,056

	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