Balance Sheet Details (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Schedule of intangible assets
Gross Carrying Value	$ 4,317	$ 4,317
Accumulated Amortization	(3,897)	(3,609)
Foreign Currency Adjustment	0	(39)
Net Carrying Value	420	669
Patents
Schedule of intangible assets
Gross Carrying Value	2,476	2,476
Accumulated Amortization	(2,056)	(1,903)
Foreign Currency Adjustment	0	0
Net Carrying Value	420	573
Developed core technology
Schedule of intangible assets
Gross Carrying Value	1,100	1,100
Accumulated Amortization	(1,100)	(1,100)
Foreign Currency Adjustment	0	0
Net Carrying Value	0	0
Patent license agreement
Schedule of intangible assets
Gross Carrying Value	741	741
Accumulated Amortization	(741)	(606)
Foreign Currency Adjustment	0	(39)
Net Carrying Value	$ 0	$ 96