Intangible Assets Schedule of Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Intangible Assets [Abstract]

Schedule of Intangible Assets by Major Class [Table Text Block]

The gross carrying amount and accumulated amortization of our intangible assets, other than goodwill, are as follows:

	March 31, 2013							December 31, 2012
	Gross Assets		Accumulated Amortization			Net		Gross Assets		Accumulated Amortization			Net
	(in thousands)
Core-developed technology	$	418,123	$	(331,603	)	$	86,520	$	407,024	$	(332,763	)	$	74,261
Customer contracts and relationships	281,697		(154,042		)	127,655		292,252		(154,890		)	137,362
Trademarks and trade names	71,004		(64,100		)	6,904		72,770		(65,090		)	7,680
Other	11,092		(11,024		)	68		11,094		(11,026		)	68
Total intangible assets subject to amortization	781,916		(560,769		)	221,147		783,140		(563,769		)	219,371
In-process research and development	—					—		19,400					19,400
Total intangible assets	$	781,916	$	(560,769	)	$	221,147	$	802,540	$	(563,769	)	$	238,771

Summary of Intangible Asset Account Activity [Table Text Block]

A summary of the intangible asset account activity is as follows:

	Three Months Ended March 31,
	2013			2012
	(in thousands)
Beginning balance, intangible assets, gross	$	802,540		$	749,194
Effect of change in exchange rates	(20,624		)	16,518
Ending balance, intangible assets, gross	$	781,916		$	765,712

Schedule of Intangible Assets, Future Amortization Expense [Table Text Block]

Estimated future annual amortization expense is as follows:

Years ending December 31,	Estimated Annual Amortization
	(in thousands)
2013 (amount remaining at March 31, 2013)	$	30,901
2014	43,672
2015	35,055
2016	27,306
2017	20,295
Beyond 2017	63,918
Total intangible assets, net	$	221,147