PARENT ONLY FINANCIAL INFORMATION (Condensed Statements of Comprehensive Income) (Details) - CNY (¥)
¥ in Thousands |
12 Months Ended |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Condensed Income Statements, Captions [Line Items] |
|
|
|
|
| General and administrative expenses |
[1] |
¥ (392,296)
|
¥ (307,519)
|
¥ (251,298)
|
| Operating loss |
|
169,159
|
229,834
|
157,682
|
| Foreign currency exchange losses |
|
(6,284)
|
3,760
|
(29,499)
|
| Interest income |
|
21,000
|
23,974
|
42,732
|
| Loss on foreign currency forward contract |
|
|
(12,898)
|
|
| Other income |
|
26,702
|
15,960
|
11,812
|
| Income before income taxes |
|
210,577
|
260,630
|
182,727
|
| Income tax expense |
|
(25,770)
|
(18,776)
|
(3,967)
|
| Net income |
|
184,807
|
241,854
|
178,760
|
| Other comprehensive income (loss) |
|
|
|
|
| Foreign currency translation adjustment, net of nil income tax |
|
(13,832)
|
22,972
|
34,748
|
| Unrealized holding gains on available for sale securities, net of RMB42 and RMB2,818 income taxes for the year 2016 and 2017 |
|
26,246
|
5,235
|
|
| Less: Reclassification adjustment for gains on available-for-sale securities realized in net income, net of RMB42 and RMB2,818 income taxes for the year 2016 and 2017 |
|
(16,496)
|
(235)
|
|
| Comprehensive income |
|
180,725
|
269,826
|
213,508
|
| Unrealized holding gains on available for sale securities, net of income taxes |
|
2,818
|
42
|
|
| Reclassification adjustment for gains on available for sale securities realized in net income, net of income taxes |
|
2,818
|
42
|
|
| Parent Company [Member] |
|
|
|
|
| Condensed Income Statements, Captions [Line Items] |
|
|
|
|
| General and administrative expenses |
|
(5,218)
|
(4,477)
|
(4,241)
|
| Operating loss |
|
(5,218)
|
(4,477)
|
(4,241)
|
| Equity in income of subsidiaries |
|
184,042
|
253,396
|
194,914
|
| Foreign currency exchange losses |
|
(422)
|
(4,753)
|
(31,923)
|
| Interest income |
|
2,327
|
8,027
|
17,610
|
| Loss on foreign currency forward contract |
|
|
(12,898)
|
|
| Other income |
|
4,078
|
2,559
|
2,400
|
| Income before income taxes |
|
184,807
|
241,854
|
178,760
|
| Income tax expense |
|
|
|
|
| Net income |
|
184,807
|
241,854
|
178,760
|
| Other comprehensive income (loss) |
|
|
|
|
| Foreign currency translation adjustment, net of nil income tax |
|
(13,832)
|
22,972
|
34,748
|
| Unrealized holding gains on available for sale securities, net of RMB42 and RMB2,818 income taxes for the year 2016 and 2017 |
|
26,246
|
5,235
|
|
| Less: Reclassification adjustment for gains on available-for-sale securities realized in net income, net of RMB42 and RMB2,818 income taxes for the year 2016 and 2017 |
|
(16,496)
|
(235)
|
|
| Comprehensive income |
|
180,725
|
269,826
|
¥ 213,508
|
| Unrealized holding gains on available for sale securities, net of income taxes |
|
2,818
|
42
|
|
| Reclassification adjustment for gains on available for sale securities realized in net income, net of income taxes |
|
¥ 2,818
|
¥ 42
|
|
|
|