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SIGNIFICANT ACCOUNTING POLICIES (Schedule of Deferred Revenue Balances by Segments) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2018 CNY (¥)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 CNY (¥)
Significant Accounting Policies [Line Items]
Deferred revenue balances	¥ 124,250	$ 18,071	¥ 114,396
Career Enhancement [Member]
Significant Accounting Policies [Line Items]
Deferred revenue balances	24,333		21,496
K12 Schools [Member]
Significant Accounting Policies [Line Items]
Deferred revenue balances	87,027		77,394
Tutoring [Member]
Significant Accounting Policies [Line Items]
Deferred revenue balances	¥ 12,890		¥ 15,506

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- References

No definition available.

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- Definition

The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6935-107765

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