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ORGANIZATION AND PRINCIPAL ACTIVITIES (Details) - USD ($) $ in Millions | 1 Months Ended
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Dec. 20, 2018 | Aug. 31, 2015
Xinjiang Daqo Investment [Member] |  |
Related Party Transaction [Line Items] |  |
Equity interest acquired (as a percent) | 100.00% | 1.00%
Business Acquisition, Percentage of Voting Interests Acquired | 100.00% | 1.00%
Payments to Acquire Businesses, Gross | $ 16.0 |
Daqo Group [Member] | Xinjiang Daqo [Member] |  |
Related Party Transaction [Line Items] |  |
Proceeds from non-controlling interest |  | $ 2.5

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