CONSOLIDATED BALANCE SHEETS (Parenthetical)
¥ in Thousands |
Dec. 31, 2017
CNY (¥)
shares
|
Dec. 31, 2017
USD ($)
$ / shares
shares
|
Dec. 31, 2016
CNY (¥)
shares
|
Dec. 31, 2016
USD ($)
$ / shares
shares
|
| Current assets: |
|
|
|
|
| Cash |
¥ 686,691
|
|
¥ 810,672
|
|
| Property and equipment, net |
519,691
|
|
437,337
|
|
| Investments, Fair Value Disclosure |
24,750
|
|
15,000
|
|
| Long-term Investments |
101,920
|
|
41,760
|
|
| Other non-current assets |
150,064
|
|
91,849
|
|
| Current liabilities: |
|
|
|
|
| Income taxes payable |
125,971
|
|
91,240
|
|
| Accrued expenses and other current liabilities |
184,646
|
|
117,867
|
|
| Other non-current liabilities |
¥ 4,329
|
|
¥ 7,043
|
|
| Class A [Member] |
|
|
|
|
| Ordinary shares |
|
|
|
|
| Ordinary shares, par value | $ / shares |
|
$ 0.001
|
|
$ 0.001
|
| Authorized | shares |
860,000,000
|
860,000,000
|
860,000,000
|
860,000,000
|
| Issued | shares |
52,340,176
|
52,340,176
|
48,735,228
|
48,735,228
|
| Outstanding | shares |
49,009,530
|
49,009,530
|
47,160,248
|
47,160,248
|
| Treasury shares | shares |
3,330,646
|
3,330,646
|
1,574,980
|
1,574,980
|
| Class B [Member] |
|
|
|
|
| Ordinary shares |
|
|
|
|
| Ordinary shares, par value | $ / shares |
|
$ 0.001
|
|
$ 0.001
|
| Authorized | shares |
40,000,000
|
40,000,000
|
40,000,000
|
40,000,000
|
| Issued | shares |
7,206,059
|
7,206,059
|
8,895,249
|
8,895,249
|
| Outstanding | shares |
7,206,059
|
7,206,059
|
8,895,249
|
8,895,249
|
| VIE [Member] |
|
|
|
|
| Current assets: |
|
|
|
|
| Cash |
¥ 294
|
|
¥ 630
|
|
| Property and equipment, net |
|
|
3
|
|
| Investments, Fair Value Disclosure | $ |
|
|
|
|
| Long-term Investments |
71,250
|
|
35,000
|
|
| Other non-current assets |
3,564
|
|
716
|
|
| Current liabilities: |
|
|
|
|
| Income taxes payable |
3,052
|
|
3,729
|
|
| Accrued expenses and other current liabilities |
308
|
|
176
|
|
| Other non-current liabilities |
¥ 267
|
|
¥ 267
|
|