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Segment Information - Schedule of Total Revenue Based on Customer's Location (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | $ 50,778 | $ 43,428 | $ 142,331 | $ 134,305
United States |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | 25,059 | 20,445 | 75,365 | 64,873
Japan |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | 8,764 | 9,893 | 24,222 | 35,668
Asia Pacific, excluding Japan |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | 7,991 | 6,285 | 18,122 | 14,960
EMEA |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | 7,317 | 4,940 | 20,372 | 13,005
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | $ 1,647 | $ 1,865 | $ 4,250 | $ 5,799

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