Intangible Assets, Net (Schedule Of Finite-Lived Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 206,685	$ 202,730
Accumulated Amortization	(131,264)	(124,448)
Net Carrying Amount	75,421us-gaap_FiniteLivedIntangibleAssetsNet	78,282us-gaap_FiniteLivedIntangibleAssetsNet
Capitalized Software Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	59,889	58,343
Accumulated Amortization	(26,700)	(22,853)
Net Carrying Amount	33,189	35,490
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	90,834	88,216
Accumulated Amortization	(67,961)	(65,663)
Net Carrying Amount	22,873	22,553
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	28,195	27,791
Accumulated Amortization	(13,328)	(12,859)
Net Carrying Amount	14,867	14,932
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	27,767	28,380
Accumulated Amortization	(23,275)	(23,073)
Net Carrying Amount	$ 4,492	$ 5,307

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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