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v3.19.1

SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 CNY (¥) | Dec. 31, 2017 CNY (¥) | Dec. 31, 2016 CNY (¥) | Dec. 31, 2018 USD ($)
Basis of presentation |  |  |  |
Exchange rate | 6.8755 |  |  | 6.8755
Original maturity period of term deposits | 3 months |  |  |
Advertising expenses | ¥ 8,450 | ¥ 2,701 | ¥ 1,857 |
Basis of consolidation |  |  |  |
Accounts Receivable, Net, Current | 18,132 | 24,511 |  | $ 2,637
Deferred Revenue, Revenue Recognized | 114,396 | 109,484 |  |
Revenue, Remaining Performance Obligation, Amount | ¥ 125,414 | ¥ 119,581 |  |
Minimum [Member] |  |  |  |
Basis of consolidation |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period | 1 year |  |  |
Maximum [Member] |  |  |  |
Basis of consolidation |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period | 4 years |  |  |

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