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Segment Information (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
Revenues by geographic region |  |  |  |
Net revenues | $ 1,679 | $ 1,287 | $ 4,817 | $ 2,109
Percentage | 100.00% | 100.00% | 100.00% | 100.00%
U.S. [Member] |  |  |  |
Revenues by geographic region |  |  |  |
Net revenues | 877 | 741 | 2,809 | 955
Percentage | 52.00% | 58.00% | 58.00% | 45.00%
Outside of U.S. [Member] |  |  |  |
Revenues by geographic region |  |  |  |
Net revenues | $ 802 | $ 546 | $ 2,008 | $ 1,154
Percentage | 48.00% | 42.00% | 42.00% | 55.00%

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