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INCOME TAXES - TAX EFFECTS OF TEMPORARY DIFFERENCES (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2015 CNY (¥) | Dec. 31, 2015 USD ($) | Dec. 31, 2015 CNY (¥) | Dec. 31, 2014 CNY (¥)
Deferred tax assets, current portion: |  |  |  |
Deferred revenue |  | $ 230 | ¥ 1,493 | ¥ 656
Provision for doubtful debts |  | 2,204 | 14,280 | 3,866
Tax loss carry forward |  | 15 | 96 | 15,600
Others |  | 193 | 1,251 | 686
Less: Valuation allowance |  | (2,032) | (13,166) | (18,115)
Current deferred tax assets |  | 610 | 3,954 | 2,693
Deferred tax assets, non-current portion: |  |  |  |
Deferred revenue |  |  |  | 111
Intangible assets and prepaid expense |  | 708 | 4,586 | 4,403
Foreign tax credit |  | 189 | 1,222 | 960
Equity investment loss (gain) |  | (140) | (908) | 1,402
Contingency consideration |  | 221 | 1,434 | 2,085
Tax loss carry forward |  | 4,248 | 27,517 | 8,051
Others |  | 71 | 458 | 650
Less: Valuation allowance |  | (3,314) | (21,466) | (11,278)
Non-current deferred tax assets |  | 1,983 | 12,843 | 6,384
Deferred tax liabilities, current portion: |  |  |  |
Long-lived assets arising from acquisitions |  | 64 | 414 |
Total deferred tax liabilities current |  | 64 | 414 |
Deferred tax liabilities, non-current portion: |  |  |  |
Long-lived assets arising from acquisitions |  | 5,850 | 37,897 | 16,259
Outside basis difference on investment in a VIE |  | 9,434 | 61,109 | 49,732
Total deferred tax liabilities non-current |  | 15,284 | 99,006 | 65,991
Components of the deferred tax assets and liabilities |  |  |  |
Total deferred tax assets before valuation allowances |  | 7,939 | 51,429 | 38,470
Valuation allowances |  | 5,346 | 34,632 | 29,393
Undistributed earnings |  | 90,880 | 588,704 | 326,199
Tax withheld provision | ¥ 0 |  |  |
Tax withheld rate | 10.00% |  |  |
Net operating losses carryforwards |  | 15,890 | 102,934 |
HONG KONG |  |  |  |
Components of the deferred tax assets and liabilities |  |  |  |
Reduced withholding tax rate | 5.00% |  |  |
Maximum |  |  |  |
Components of the deferred tax assets and liabilities |  |  |  |
Unrecognized deferred income tax liabilities |  | 9,088 | 58,870 | 32,620
Minimum |  |  |  |
Components of the deferred tax assets and liabilities |  |  |  |
Unrecognized deferred income tax liabilities |  | 4,544 | 29,435 | ¥ 16,310
Foreign |  |  |  |
Components of the deferred tax assets and liabilities |  |  |  |
Foreign tax credit carryforwards |  | $ 189 | ¥ 1,222 |

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