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SIGNIFICANT CUSTOMERS AND GEOGRAPHIC NET REVENUES Geograpic Net Revenues (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Revenue by Geography |  |
Total net revenues | $ 89,188 | $ 103,081
United States of America |  |
Revenue by Geography |  |
Total net revenues | 2,672 | 3,867
Hong Kong/China |  |
Revenue by Geography |  |
Total net revenues | 47,229 | 51,357
Taiwan |  |
Revenue by Geography |  |
Total net revenues | 6,672 | 11,886
Korea |  |
Revenue by Geography |  |
Total net revenues | 8,542 | 9,649
Western Europe (excluding Germany) |  |
Revenue by Geography |  |
Total net revenues | 10,901 | 13,592
Japan |  |
Revenue by Geography |  |
Total net revenues | 3,650 | 4,551
Germany |  |
Revenue by Geography |  |
Total net revenues | 4,927 | 3,304
Other |  |
Revenue by Geography |  |
Total net revenues | $ 4,595 | $ 4,875

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 + Details
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