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FINANCIAL INFORMATION OF PARENT COMPANY (Condensed Statement of Cash Flows) (Details) ¥ in Thousands, $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2011 USD ($) | Dec. 31, 2016 CNY (¥) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 CNY (¥) | Dec. 31, 2014 CNY (¥)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |  |  |  |
Exchange (gain) loss |  | ¥ (320) | $ (46) | ¥ 124 | ¥ 2,650
Changes in liabilities, net of effects of acquisition: |  |  |  |  |
Changes in other current liabilities |  | (19,043) | (2,742) | 82,533 | 15,993
Net cash provided by (used in) operating activities |  | 13,441 | 1,936 | 2,202 | (66,488)
Cash flows from investing activities: |  |  |  |  |
Investment in cost method investees |  | (6,750) | (972) | (7,682) |
Net cash used in investing activities |  | (119,429) | (17,202) | (126,949) | (30,545)
Cash flows from financing activities: |  |  |  |  |
Proceeds from amounts due to related parties |  |  |  |  | 68,941
Repayment of amounts due to related parties |  |  |  |  | (61,472)
Proceeds from shareholders’ payment for ordinary shares |  |  |  |  | 17
Proceeds from issuance of Series D convertible redeemable preferred shares, net |  |  |  |  | 145,746
Proceeds from issuance of ordinary shares upon public offering |  | 253,678 | 36,537 | 784,350 |
Proceeds from exercises of stock options |  | 3,943 | 568 | 161 |
Payment for ordinary shares repurchase |  | (45,321) | (6,528) | (13,958) |
Advances for ordinary shares repurchase |  |  |  | (5,521) |
Payment for public offering costs |  | (15,644) | (2,253) | (77,289) | (2,128)
Net cash provided by financing activities |  | 210,719 | 30,350 | 687,743 | 151,104
Net increase in cash and cash equivalents |  | 104,731 | 15,084 | 562,996 | 54,071
Cash and cash equivalents, beginning of year |  | 787,257 | 113,389 | 206,391 | 154,156
Effect of exchange rate changes on cash and cash equivalents |  | 25,331 | 3,648 | 17,870 | (1,836)
Cash and cash equivalents, end of year |  | 917,319 | 132,121 | 787,257 | 206,391
Parent Company [Member] |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |
Net income (loss) |  | 86,633 | 12,477 | 22,621 | (59,814)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |  |  |  |
Exchange (gain) loss |  | (7) | (1) | 471 | 2,414
Equity in (income) loss of subsidiaries and VIE |  | (86,951) | (12,523) | (23,644) | 57,334
Changes in liabilities, net of effects of acquisition: |  |  |  |  |
Changes in other current liabilities |  | (6,394) | (921) | 9,127 | 38
Net cash provided by (used in) operating activities |  | (6,719) | (968) | 8,575 | (28)
Cash flows from investing activities: |  |  |  |  |
Advances to subsidiaries and VIE |  | (14,879) | (2,143) | (229,031) | (5,932)
Investment in cost method investees |  |  |  | (6,682) |
Investments in subsidiaries |  | 14,139 | 2,037 | (366,234) |
Net cash used in investing activities |  | (740) | (106) | (601,947) | (5,932)
Cash flows from financing activities: |  |  |  |  |
Proceeds from amounts due to related parties |  |  |  |  | 68,941
Repayment of amounts due to related parties |  |  |  |  | (61,472)
Proceeds from shareholders’ payment for ordinary shares |  |  |  |  | 17
Proceeds from issuance of Series D convertible redeemable preferred shares, net |  |  |  |  | 145,746
Proceeds from issuance of ordinary shares upon public offering |  | 253,678 | 36,537 | 784,350 |
Proceeds from exercises of stock options |  | 3,943 | 568 | 11 |
Payment for ordinary shares repurchase |  | (45,321) | (6,528) | (13,958) |
Advances for ordinary shares repurchase |  |  |  | (5,521) |
Payment for public offering costs |  | (15,644) | (2,253) | (77,289) | (823)
Net cash provided by financing activities |  | 196,656 | 28,324 | 687,593 | 152,409
Net increase in cash and cash equivalents |  | 189,197 | 27,250 | 94,221 | 146,449
Cash and cash equivalents, beginning of year |  | 254,213 | 36,614 | 144,814 |
Effect of exchange rate changes on cash and cash equivalents |  | 17,260 | 2,486 | 15,178 | (1,635)
Cash and cash equivalents, end of year |  | ¥ 460,670 | $ 66,350 | ¥ 254,213 | ¥ 144,814

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