Balance Sheet Account Detail Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Goodwill	$ 28,969		$ 27,073
Indefinite lived intangibles	42,808		42,808
Intangible assets (excluding goodwill), net	43,399		43,439
Developed technology
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Finite lived intangibles	0		14,050
Accumulated amortization	0		(13,465)
Finite lived intangibles, net	0		585
Patent
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Finite lived intangibles	200		100
Accumulated amortization	(75)		(54)
Finite lived intangibles, net	125		46
Customer list
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Finite lived intangibles	508		0
Accumulated amortization	(42)		0
Finite lived intangibles, net	466		0
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.