Balance Sheet Account Detail Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Goodwill	$ 27,073		$ 27,073
Indefinite lived intangibles	42,808		42,808
Intangible assets (excluding goodwill), net	42,843		43,439
Developed technology
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Finite lived intangibles	14,050		14,050
Accumulated amortization	(14,050)		(13,465)
Finite lived intangibles, net	0		585
Patent
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Finite lived intangibles	100		100
Accumulated amortization	(65)		(54)
Finite lived intangibles, net	35		46
In-process research and development
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Indefinite lived intangibles	40,100	[1]	40,100	[1]
Trademarks and trade names
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Indefinite lived intangibles	$ 2,708		$ 2,708

[1] Will be reclassified to finite lived intangibles and amortized upon the commercial launch of the product (Nellix Device) associated with this intangible asset.