INCOME TAXES (Schedule of Income before Income Taxes) (Details) - CNY (¥) ¥ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Income Taxes [Line Items] | |||
| Income before income taxes | ¥ 210,577 | ¥ 260,630 | ¥ 182,727 |
| PRC [Member] | |||
| Income Taxes [Line Items] | |||
| Income before income taxes | 212,227 | 272,745 | 200,789 |
| Hong Kong [Member] | |||
| Income Taxes [Line Items] | |||
| Income before income taxes | (2,415) | (573) | (1,908) |
| Cayman Islands [Member] | |||
| Income Taxes [Line Items] | |||
| Income before income taxes | ¥ 765 | ¥ (11,542) | ¥ (16,154) |