TAXATION (Reconciliation of Differences Between Statutory Tax Rate and Effective Tax Rate) (Details) ¥ in Thousands, $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2017
CNY (¥)
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
CNY (¥)
|
Dec. 31, 2015
CNY (¥)
|
|
| TAXATION [Line Items] | ||||
| Loss before income taxes | ¥ 253,895 | $ 39,023 | ¥ 204,598 | ¥ 5,254 |
| Income tax computed at the tax rate of 25% | (63,474) | (9,756) | (51,150) | (1,314) |
| Effect of different tax rates in different jurisdictions | 23,554 | 3,620 | 10,400 | 9,718 |
| Non-deductible expenses | 13,872 | 2,132 | 6,942 | 4,682 |
| Non-taxable income | (1,942) | (298) | 0 | (2,580) |
| Unrecognized tax positions | (2,942) | (452) | 1,467 | 9,041 |
| Changes of valuation allowance | 48,089 | 7,391 | 73,847 | 11,889 |
| Withholding tax | 15,624 | 2,401 | 18,980 | 42,589 |
| Effect of tax rate change | (992) | (152) | 0 | 0 |
| Income tax expense | ¥ 31,789 | $ 4,886 | ¥ 60,486 | ¥ 74,025 |