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FAIR VALUE MEASUREMENTS (Narrative) (Details) - Nonrecurring [Member] ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2019 CNY (¥)	Dec. 31, 2019 CNY (¥)	Dec. 31, 2018 CNY (¥)
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Carrying amount of long lived assets held for use	$ 1,269		¥ 8,834
Long-lived assets held and used	285		¥ 1,985	¥ 3,467
Impairment of long-lived assets	$ 984	¥ 6,849

X

- Definition

Carrying amount as of the balance sheet date of impaired long-lived assets held for use.

+ References

No definition available.

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- Definition

Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]

+ References

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale) and long-lived assets held for abandonment, exchange or sale.

+ References

No definition available.

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X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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