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EARNINGS PER SHARE (Tables) | 12 Months Ended
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Dec. 31, 2016
EARNINGS (LOSS) PER SHARE [Abstract] |
Schedule of Basic and Diluted Earnings Per Share |
|  | Year Ended December 31, |
|  | 2014 |  | 2015 |  | 2016 |
|  | RMB |  | RMB |  | RMB |
Numerator: |  |  |  |  |  |  |  |  |  |
Net income attributable to Class A and Class B ordinary shareholders |  |  | 148,320 |  |  | 178,760 |  |  | 241,854 |
Less: |  |  |  |  |  |  |  |  |  |
Earnings allocated to participating Series A convertible redeemable preferred shares |  |  | (5,648) |  |  | — |  |  | — |
Earnings allocated to participating Series B convertible redeemable preferred shares |  |  | (5,745) |  |  | — |  |  | — |
Earnings allocated to participating Series C convertible redeemable preferred shares |  |  | (8,566) |  |  | — |  |  | — |
Net income for basic and diluted earnings per share |  |  | 128,361 |  |  | 178,760 |  |  | 241,854 |
Denominator: |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings per share: |  |  |  |  |  |  |  |  |  |
Weighted average number of Class A and Class B ordinary shares outstanding |  |  | 41,223,389 |  |  | 53,767,810 |  |  | 55,540,670 |
Dilutive effect of outstanding share options |  |  | 6,546,743 |  |  | 4,983,046 |  |  | 3,464,591 |
Denominator for diluted earnings per share |  |  | 47,770,132 |  |  | 58,750,856 |  |  | 59,005,261 |
Basic earnings per Class A and Class B ordinary share |  |  | 3.11 |  |  | 3.32 |  |  | 4.35 |
Diluted earnings per Class A and Class B ordinary share |  |  | 2.69 |  |  | 3.04 |  |  | 4.10 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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