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SIGNIFICANT CUSTOMERS AND GEOGRAPHIC NET REVENUES Geograpic Net Revenues (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Revenue by Geography |  |  |  |
Total net revenues | $ 102,865 | $ 109,482 | $ 192,053 | $ 212,563
United States of America |  |  |  |
Revenue by Geography |  |  |  |
Total net revenues | 2,612 | 3,729 | 5,284 | 7,596
Hong Kong/China |  |  |  |
Revenue by Geography |  |  |  |
Total net revenues | 59,355 | 58,614 | 106,584 | 109,971
Taiwan |  |  |  |
Revenue by Geography |  |  |  |
Total net revenues | 10,164 | 12,914 | 16,836 | 24,800
Korea |  |  |  |
Revenue by Geography |  |  |  |
Total net revenues | 6,902 | 8,229 | 15,444 | 17,878
Western Europe (excluding Germany) |  |  |  |
Revenue by Geography |  |  |  |
Total net revenues | 8,625 | 11,476 | 19,526 | 25,068
Japan |  |  |  |
Revenue by Geography |  |  |  |
Total net revenues | 2,909 | 5,647 | 6,559 | 10,198
Germany |  |  |  |
Revenue by Geography |  |  |  |
Total net revenues | 3,813 | 3,705 | 8,740 | 7,009
Other |  |  |  |
Revenue by Geography |  |  |  |
Total net revenues | $ 8,485 | $ 5,168 | $ 13,080 | $ 10,043

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