Intangible Assets (Schedule Of Finite-Lived Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 192,980	$ 186,407
Accumulated Amortization	(110,670)	(92,494)
Net Carrying Amount	82,310	93,913
Capitalized Software Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	48,947	45,064
Accumulated Amortization	(25,706)	(23,450)
Net Carrying Amount	23,241	21,614
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	89,446	89,876
Accumulated Amortization	(54,253)	(42,562)
Net Carrying Amount	35,193	47,314
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	26,070	24,046
Accumulated Amortization	(11,045)	(9,398)
Net Carrying Amount	15,025	14,648
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	28,517	27,421
Accumulated Amortization	(19,666)	(17,084)
Net Carrying Amount	$ 8,851	$ 10,337