Balance Sheet Details (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Schedule of intangible assets
Gross Carrying Value	$ 4,317	$ 4,317
Accumulated Amortization	(3,523)	(3,217)
Foreign Currency Adjustment	(36)	11
Net Carrying Value	758	1,111
Patents
Schedule of intangible assets
Gross Carrying Value	2,476	2,476
Accumulated Amortization	(1,852)	(1,699)
Foreign Currency Adjustment	0	0
Net Carrying Value	624	777
Developed core technology
Schedule of intangible assets
Gross Carrying Value	1,100	1,100
Accumulated Amortization	(1,100)	(1,050)
Foreign Currency Adjustment	0	29
Net Carrying Value	0	79
Patent license agreement
Schedule of intangible assets
Gross Carrying Value	741	741
Accumulated Amortization	(571)	(468)
Foreign Currency Adjustment	(36)	(18)
Net Carrying Value	$ 134	$ 255