Intangibles (Schedule Of Finite-Lived Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 186,407	$ 158,605
Accumulated Amortization	(92,494)	(74,739)
Total	93,913	83,866
Capitalized Software Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	45,064	44,198
Accumulated Amortization	(23,450)	(20,718)
Total	21,614	23,480
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	89,876	67,918
Accumulated Amortization	(42,562)	(32,210)
Total	47,314	35,708
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	24,046	21,875
Accumulated Amortization	(9,398)	(7,992)
Total	14,648	13,883
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	27,421	24,614
Accumulated Amortization	(17,084)	(13,819)
Total	$ 10,337	$ 10,795