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NATURE OF OPERATIONS, BASIS OF PRESENTATION AND CONSOLIDATION (Details) ¥ in Millions, $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 shares | Mar. 31, 2019 shares | Dec. 31, 2019 CNY (¥) | Dec. 31, 2019 USD ($)
Restricted Stock |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Anti-dilutive shares excluded from calculation of earnings per share in periods when losses are reported (in shares) | 940,476 | 57,894 |  |
China |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Restricted cash |  |  | ¥ 20 | $ 2.9

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