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v3.20.1

SUBSEQUENT EVENTS (Details) - $ / shares |  | 12 Months Ended
--- | --- | ---
Feb. 10, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Subsequent Event [Line Items] |  |  |
Cash dividends declared (in dollars per share) |  | $ 0.64 | $ 2.77
Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Cash dividends declared (in dollars per share) | $ 0.20 |  |
Hong Kong | Geographic Concentration Risk | Revenue Benchmark |  |  |
Subsequent Event [Line Items] |  |  |
Concentration risk percentage |  | 81.00% |

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