| Balance Sheet Details (Details 2) (USD $) In Thousands, unless otherwise specified | 6 Months Ended | |
|---|---|---|
| Jun. 30, 2012 | Dec. 31, 2011 | |
| Intangible assets | ||
| Total | $ 648 | $ 1,021 | 
| Licensed Technology [Member] | ||
| Intangible assets | ||
| Weighted average amortization period in years | 3 years | |
| Intangibles assets, Gross | 1,865 | 1,865 | 
| Less accumulated amortization | $ (1,217) | $ (844) | 
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available. 
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