Balance Sheet Account Detail Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Total	$ 40,272
Intangible assets (excluding goodwill), net	42,980		43,096
Finite lived intangibles
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Finite lived intangibles	40,100	[1]	40,100	[1]
Accumulated amortization	(105)		(48)
Total	39,995		40,052
Patent
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Finite lived intangibles	100		100
Accumulated amortization	(100)		(95)
Total	0		5
License
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Finite lived intangibles	100		100
Accumulated amortization	(49)		(41)
Total	51		59
Customer relationships
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Finite lived intangibles	543		544
Accumulated amortization	(317)		(272)
Total	226		272
Trademarks and trade names
Goodwill, Finite-lived, and Indefinite-lived Intangible Assets [Line Items]
Indefinite lived intangibles	$ 2,708		$ 2,708

[1] Was reclassified in the first quarter of 2013 from in- process research and development to finite lived intangibles, which coincided with the European commercial launch of the product (Nellix EVAS 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.