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EQUITY METHOD INVESTMENTS (Schedule of Equity Method Investments) (Parenthetical) (Details) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2016	Jul. 31, 2015	Dec. 28, 2012
MD Anderson Cancer Center Proton Therapy Center [Member]
Schedule of Equity Method Investments [Line Items]
Equity interest in equity method investment			45.41%
PTC [Member]
Schedule of Equity Method Investments [Line Items]
Voting interest acquired		14.34%
Equity interest in equity method investment			44.55%
Purchase price of entity		¥ 30,063	¥ 201,176
PTC GP Management LLC [Member]
Schedule of Equity Method Investments [Line Items]
Voting interest acquired		17.07%
Equity interest in equity method investment			45.00%
Maximum voting percentage required to pass resolution	50.00%
General Partner [Member]
Schedule of Equity Method Investments [Line Items]
Equity interest in equity method investment			1.00%

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- Definition

Represents the maximum voting percentage required to pass resolution.

+ References

No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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- Definition

Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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