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TAXATION (Narrative) (Details) ¥ in Thousands, $ in Thousands | 4 Months Ended | 8 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Apr. 30, 2018 | Dec. 31, 2018 CNY (¥) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 CNY (¥) | Dec. 31, 2017 USD ($) | Dec. 31, 2017 CNY (¥) | Dec. 31, 2011 | Dec. 31, 2019 CNY (¥)
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |
Applicable tax rates |  |  | 25.00% | 25.00% | 25.00% | 25.00% | 25.00% | 25.00% |  |
Withholding Tax Rate |  |  | 10 | 10 |  |  |  |  |  |
Income tax payable |  | ¥ 3,762 | $ 108 |  |  | ¥ 3,762 |  |  |  | ¥ 752
Uncertain tax position, impact on taxes |  |  | 977 | ¥ 6,802 |  | 8,309 |  | ¥ 2,770 |  |
Accrued interest and penalties |  | 37,943 | 4,473 |  |  | 37,943 |  |  |  | 31,141
Unrecognized tax benefits, net deferred tax asset related to tax loss carryforwards |  | 0 | 3,934 |  |  | 0 |  |  |  | 27,385
Unrecognized Tax Benefits that Would Impact Effective Tax Rate |  | 46,978 | 8,721 |  |  | 46,978 |  |  |  | 60,711
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest |  |  | 56,175 | 391,078 |  | 225,246 |  | 253,895 |  |
Business tax rate |  |  |  |  |  |  |  |  | 5 |
Net operating loss carryforwards |  |  | 113,444 |  |  |  |  |  |  | 789,776
Deferred Tax Assets, Net of Valuation Allowance |  | ¥ 696 | 8,558 |  |  | 696 |  |  |  | ¥ 59,580
Current Federal, State and Local, Tax Expense (Benefit) |  |  | $ 195 | ¥ (1,358) |  | ¥ 2,867 |  | ¥ 0 |  |
Movable Property [Member] |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |
Value added tax |  |  | 3.00% | 3.00% |  |  |  |  |  |
Property Leasing Arrangement [Member] |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |
Value added tax | 17.00% | 13.00% |  |  |  |  |  |  |  |
Technical Service [Member] |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |
Value added tax |  |  | 6.00% | 6.00% |  |  |  |  |  |
United States of America [Member] |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |
Applicable tax rates |  |  | 21.00% | 21.00% | 35.00% | 35.00% | 35.00% | 35.00% |  |
SINGAPORE |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |
Income tax profits | $ |  |  | $ 0 |  | $ 0 |  | $ 0 |  |  |
HONG KONG |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |
Income tax profits | ¥ |  |  |  | ¥ 0 |  |  |  |  |  |

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