Balance Sheet Account Detail Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Goodwill	$ 29,067	[1]	$ 29,022	[1]
Indefinite lived intangibles	2,708		42,808
Finite lived intangibles, net	40,454
Intangible assets (excluding goodwill), net	43,162		43,356
Developed technology
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Finite lived intangibles	40,100	[2]	0	[2]
Accumulated amortization	(33)		0
Finite lived intangibles, net	40,067		0
Patent
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Finite lived intangibles	100		100
Accumulated amortization	(90)		(75)
Finite lived intangibles, net	10		25
License
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Finite lived intangibles	100		100
Accumulated amortization	(34)		(12)
Finite lived intangibles, net	66		88
Customer list
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Finite lived intangibles	533		522
Accumulated amortization	(222)		(87)
Finite lived intangibles, net	311		435
In-process research and development
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Indefinite lived intangibles	0	[2]	40,100	[2]
Trademarks and trade names
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Indefinite lived intangibles	$ 2,708		$ 2,708

[1] Difference in goodwill value between these dates is solely due to a foreign currency translation adjustment.

[2] Was reclassified in the first quarter of 2013 to finite lived intangibles, which coincided with the European commercial launch of the product (Nellix System) associated with this intangible asset. A significant portion of this intangible asset will not begin amortization until the U.S. launch of this product, currently scheduled for 2016.