PARENT ONLY FINANCIAL INFORMATION (Condensed Statements of Cash Flows) (Details) - CNY (¥)
¥ in Thousands |
12 Months Ended |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Investing activities: |
|
|
|
| Purchase of time deposits |
¥ (509,739)
|
¥ (421,170)
|
¥ (639,019)
|
| Proceeds from maturity of time deposits |
528,999
|
678,741
|
690,250
|
| Foreign currency exchange losses |
6,471
|
(3,760)
|
29,499
|
| Financing activities: |
|
|
|
| Issuance of Class A ordinary shares in connection with exercise of share options |
22,254
|
20,388
|
22,456
|
| Payment of dividends |
(63,087)
|
(54,026)
|
|
| Repurchase of treasury shares |
(143,389)
|
(44,406)
|
(49,355)
|
| Changes in cash and cash equivalents |
(118,687)
|
289,537
|
248,490
|
| Effect of foreign currency exchange rate changes on cash, cash equivalents and restricted cash |
(5,294)
|
7,197
|
4,413
|
| Non-cash investing and financing activities: |
|
|
|
| Payable For Repurchase Of Treasury Shares |
17,953
|
|
|
| Parent Company [Member] |
|
|
|
| Operating activities: |
|
|
|
| Net cash provided by (used in) operating activities |
(17,594)
|
(10,272)
|
9,770
|
| Investing activities: |
|
|
|
| Purchase of time deposits |
(196,771)
|
(298,688)
|
(588,426)
|
| Proceeds from maturity of time deposits |
363,533
|
620,607
|
603,501
|
| Investments made to subsidiaries |
|
(198,137)
|
|
| Foreign currency exchange losses |
10,691
|
0
|
0
|
| Net cash provided by investing activities |
177,453
|
123,782
|
15,075
|
| Financing activities: |
|
|
|
| Advances from a related party |
|
|
1,432
|
| Repayment of advances from a related party |
|
|
(1,432)
|
| Issuance of Class A ordinary shares in connection with exercise of share options |
22,254
|
20,388
|
22,456
|
| Payment of dividends |
(63,087)
|
(54,026)
|
|
| Repurchase of treasury shares |
(143,389)
|
(44,406)
|
(49,355)
|
| Net cash used in financing activities |
(184,222)
|
(78,044)
|
(26,899)
|
| Changes in cash and cash equivalents |
(24,363)
|
35,466
|
(2,054)
|
| Effect of foreign currency exchange rate changes on cash, cash equivalents and restricted cash |
(1,749)
|
2,029
|
398
|
| Net increase (decrease) in cash and cash equivalents |
(26,112)
|
37,495
|
(1,656)
|
| Cash and cash equivalents at beginning of year |
43,770
|
6,275
|
7,931
|
| Cash and cash equivalents at end of year |
17,658
|
43,770
|
6,275
|
| Non-cash investing and financing activities: |
|
|
|
| Payable For Repurchase Of Treasury Shares |
¥ 17,953
|
|
|