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SIGNIFICANT CUSTOMERS AND GEOGRAPHIC NET REVENUES Customer and Credit Risk Concentration (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) Customer | Sep. 30, 2019 USD ($) | Dec. 31, 2019 Customer
Concentration Risk [Line Items] |  |  |  |  |
NET REVENUES | $ 121,129 | $ 114,159 | $ 337,625 | $ 306,212 |
Distributors [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
NET REVENUES | $ 85,300 | $ 78,000 | $ 256,100 | $ 222,700 |
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage benchmark | 10.00% | 10.00% | 10.00% | 10.00% |
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | Avnet |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk, percentage of total net revenues | 18.00% | 11.00% | 14.00% | 11.00% |
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | Honestar Technologies Co., Ltd. |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk, percentage of total net revenues | 14.00% |  |  |  |
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | Ten Customers |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk, percentage of total net revenues | 65.00% | 55.00% | 56.00% | 54.00% |
Accounts Receivable [Member] | Credit Concentration Risk [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Number of major customers | Customer |  |  | 10 |  | 10
Concentration risk percentage benchmark for accounts receivable (more than) | 10.00% |  | 10.00% |  | 10.00%
Accounts Receivable [Member] | Credit Concentration Risk [Member] | Avnet |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage benchmark |  |  | 29.00% |  |
Accounts Receivable [Member] | Credit Concentration Risk [Member] | Powertech Distribution Ltd. |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage benchmark |  |  | 10.00% |  | 10.00%
Accounts Receivable [Member] | Credit Concentration Risk [Member] | Honestar Technologies Co., Ltd. |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage benchmark |  |  | 10.00% |  |
Accounts Receivable [Member] | Credit Concentration Risk [Member] | Ten Customers |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage benchmark |  |  | 74.00% |  | 63.00%

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