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Concentration of Risk, Segment and Geographic Information (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2012
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Mar. 31, 2012
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Dec. 31, 2011
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Sep. 30, 2011
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Jun. 30, 2011
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Mar. 31, 2011
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Revenues from External Customers and Long-Lived Assets [Line Items] | |||||||||||||||||
| Number of operating segments | 1 | ||||||||||||||||
| Revenues | $ 7,391 | $ 7,251 | $ 9,275 | $ 9,865 | $ 9,847 | [1] | $ 16,229 | [1] | $ 16,525 | [1] | $ 15,595 | [1] | $ 33,782 | $ 58,196 | $ 33,641 | ||
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United States [Member]
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| Revenues from External Customers and Long-Lived Assets [Line Items] | |||||||||||||||||
| Revenues | 14,134 | 20,447 | 25,306 | ||||||||||||||
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Europe [Member]
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| Revenues from External Customers and Long-Lived Assets [Line Items] | |||||||||||||||||
| Revenues | 18,454 | 35,718 | 4,728 | ||||||||||||||
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Asia Pacific [Member]
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| Revenues from External Customers and Long-Lived Assets [Line Items] | |||||||||||||||||
| Revenues | $ 1,194 | $ 2,031 | $ 3,607 | ||||||||||||||
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Customer Concentration Risk [Member]
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| Concentration Risk [Line Items] | |||||||||||||||||
| Number of major customers | 2 | 2 | 3 | ||||||||||||||
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Revenues [Member] | Customer Concentration Risk [Member] | Customer 1 [Member]
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| Concentration Risk [Line Items] | |||||||||||||||||
| Concentration risk, percentage (in hundredths) | 47.00% | 61.00% | 64.00% | ||||||||||||||
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Revenues [Member] | Customer Concentration Risk [Member] | Customer 2 [Member]
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| Concentration Risk [Line Items] | |||||||||||||||||
| Concentration risk, percentage (in hundredths) | 33.00% | 32.00% | 13.00% | ||||||||||||||
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Revenues [Member] | Customer Concentration Risk [Member] | Customer 3 [Member]
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| Concentration Risk [Line Items] | |||||||||||||||||
| Concentration risk, percentage (in hundredths) | 11.00% | ||||||||||||||||
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Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 1 [Member]
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| Concentration Risk [Line Items] | |||||||||||||||||
| Concentration risk, percentage (in hundredths) | 58.00% | 57.00% | |||||||||||||||
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Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 2 [Member]
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| Concentration Risk [Line Items] | |||||||||||||||||
| Concentration risk, percentage (in hundredths) | 35.00% | 43.00% | |||||||||||||||
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