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GOODWILL (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2020 CNY (¥)	Dec. 31, 2019 CNY (¥)
Changes in the carrying amount of goodwill by segment
Balance at the beginning of the period		¥ 60,353	¥ 73,166
Goodwill recognized during the period		960	20,911
Goodwill disposed during the period		(290)
Goodwill, Impairment Loss		(35,313)	(33,724)
Balance at the end of the period	$ 3,940	¥ 25,710	60,353
Growth rate
Changes in the carrying amount of goodwill by segment
Terminal growth rate (as a percent)	3.00%	3.00%
Minimum | Discount rate
Changes in the carrying amount of goodwill by segment
Discount rate (as a percent)	15.00%	15.00%
Maximum | Discount rate
Changes in the carrying amount of goodwill by segment
Discount rate (as a percent)	16.00%	16.00%
K-12 Schools [Member]
Changes in the carrying amount of goodwill by segment
Balance at the beginning of the period		¥ 25,710	25,710
Balance at the end of the period		25,710	25,710
CP&CE Programs
Changes in the carrying amount of goodwill by segment
Balance at the beginning of the period		34,643	47,456
Goodwill recognized during the period		960	20,911
Goodwill disposed during the period		(290)
Goodwill, Impairment Loss		¥ (35,313)	(33,724)
Balance at the end of the period			¥ 34,643

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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