Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2012

Goodwill and Other Intangible Assets [Abstract]

Schedule of Goodwill [Table Text Block]

	(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

Schedule of Other Intangible Assets

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

	March 31, 2012
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Amortization period in years
Completed technology	$	63,631	$	(25,000	)	$	38,631	6
Customer relationships	102,100		(62,413		)	39,687		9
Non-compete agreements	14,440		(5,722		)	8,718		5
Trademarks and trade names	3,300		(817		)	2,483		9
Acquired license rights	490		(490		)	—		10
Total	$	183,961	$	(94,442	)	$	89,519

	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