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SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2018
SIGNIFICANT ACCOUNTING POLICIES |
Schedule of property, plant and equipment estimated useful life and residual value |
Category |  | Estimated useful life
Buildings |  | 35 years
Furniture, fixture and equipment |  | 5 years
Motor vehicles |  | 5 years
Leasehold improvement and building improvement |  | Shorter of lease term or economic life
Schedule of revenues disaggregated by revenue sources and revenue types |
|  | Years ended December 31,
|  | 2016 |  | 2017 |  | 2018
Net revenues: |  |  |  |  |  |
Kindergartens |  | 78,766 |  | 105,679 |  | 124,175
Play-and-learn centers |  | 25,390 |  | 29,871 |  | 26,777
Others |  | 4,357 |  | 5,253 |  | 5,546
Total net revenues |  | 108,513 |  | 140,803 |  | 156,498
The following table presents the Group’s revenues disaggregated by revenue types.
|  | Years ended December 31,
|  | 2016 |  | 2017 |  | 2018
Services: |  |  |  |  |  |
Tuition fees from kindergartens and play-and-learn centers |  | 78,268 |  | 100,745 |  | 117,080
Franchise fees |  | 12,425 |  | 13,537 |  | 14,365
Training and other services |  | 5,243 |  | 7,703 |  | 7,161
Royalty fees |  | — |  | 884 |  | 610
|  | 95,936 |  | 122,869 |  | 139,216
Products: |  |  |  |  |  |
Sale of educational merchandise |  | 12,577 |  | 17,934 |  | 17,282
Total net revenues |  | 108,513 |  | 140,803 |  | 156,498
Schedule of contract liabilities |
|  | Opening balance |  | Closing balance
|  | January 1, 2018 |  | December 31, 2018
Prepayments from customers, current portion |  | 11,968 |  | 6,647
Prepayments from customers, non-current portion |  | 8,542 |  | 3,582
Deferred revenue, current portion |  | 22,666 |  | 29,578
Deferred revenue, non-current portion |  | 10,396 |  | 6,915

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