SHARE-BASED AWARDS (Tables)
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12 Months Ended |
Dec. 31, 2017 |
| Schedule of Assumptions Used |
| | | February 18, 2014 | | | Risk-free interest rate | | | 2.33 | % | | Dividend yield | | | 5 | % | | Exercise multiple | | | 2.5 | | | Expected volatility range | | | 39.03 | % |
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| Schedule of Stock Options |
| Share Options Granted to Employees | | Number of Shares | | Weighted- Average Exercise Price | | Weighted Average Grant-date Fair Value | | Weighted Average Remaining Contractual Term (Years) | | Aggregate Intrinsic Value | | | Outstanding, January 1, 2017 | | | 7,459,046 | | US$ | 2.98 | | US$ | 0.72 | | | 5.74 | | | — | | | Granted | | | — | | | — | | | — | | | — | | | — | | | Exercised | | | — | | | — | | | — | | | — | | | — | | | Forfeited | | | (4,241,959) | | US$ | 1.37 | | US$ | 0.65 | | | 0.13 | | | — | | | Outstanding, December 31, 2017 | | | 3,217,087 | | US$ | 5.11 | | US$ | 0.81 | | | 13.13 | | | — | | | Expected to vest, December 31, 2017 | | | 3,217,087 | | US$ | 5.11 | | US$ | 0.81 | | | 13.13 | | | — | | | Exercisable at December 31, 2017 | | | 2,991,291 | | US$ | 5.11 | | US$ | 0.81 | | | 13.13 | | | — | |
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| Schedule of Share-Based Compensation Expense |
| | | For the Years ended December 31, | | | | | 2015 | | 2016 | | 2017 | | 2017 | | | | | RMB | | RMB | | RMB | | US$ | | | General and administrative expenses | | | 7,304 | | | 7,573 | | | 10,099 | | | 1,552 | | | Selling expenses | | | 780 | | | 827 | | | 1,542 | | | 237 | | | | | | 8,084 | | | 8,400 | | | 11,641 | | | 1,789 | |
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| Restricted shares [Member] |
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| Summary of Restricted Shares |
| | | Numbers of shares | | Weighted average grant date fair value | | | | | RMB | | US$ | | | Outstanding, January 1, 2017 | | | 1,271,085 | | | — | | | Granted | | | 4,818,150 | | | 1.48 | | | Vested | | | — | | | — | | | Forfeited | | | (47,388) | | | 1.93 | | | Outstanding, December 31, 2017 | | | 6,041,847 | | | 1.17 | | | Expected to vest, December 31, 2017 | | | 6,041,847 | | | 1.17 | |
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