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ACQUISITIONS AND DISPOSALS (Narrative) (Details) ¥ in Thousands, $ in Thousands |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 13, 2019 USD ($) | Nov. 13, 2019 CNY (¥) | Jul. 22, 2019 CNY (¥) | Oct. 08, 2018 CNY (¥) agreement | Oct. 18, 2017 CNY (¥) | Apr. 06, 2017 CNY (¥) | Jul. 31, 2018 CNY (¥) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2018 CNY (¥) | Dec. 31, 2017 CNY (¥) | Dec. 31, 2019 CNY (¥) | Nov. 18, 2019 CNY (¥) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 CNY (¥) | Jun. 30, 2018 CNY (¥) | Jun. 29, 2018 | Jan. 25, 2016 CNY (¥)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Loss On Disposal Beijing Century Friendship and BPMC |  |  |  |  |  | ¥ 58,854 |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  | $ 30,229 |  |  |  | ¥ 210,443 |  | $ 23,725 | ¥ 165,171 |  |  |
Shanghai Meizhongjiahe ProMed Cancer Centers Co., Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  |  |  |  |  |  | 54.80% |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  |  |  |  | ¥ 182,100 |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90.00% |  |
Beijing Century Friendship Science and Technology Development Co., Ltd. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  |  |  |  |  |  | 78.31% |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  |  |  |  | ¥ 388,500 |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% | 21.69% |
Beijing Century Friendship Science and Technology Development Co., Ltd. [Member] | Guofu Huimei Investment Management Limited Partnership [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  | ¥ 388,500 |  |  |  |  |  |  |  |  |  |  |  |
ZR Guofu [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Partners' Capital Account, Contributions |  |  |  |  |  |  |  |  | ¥ 746,001 |  |  |  |  |  |  |  |  |
ZR Guofu [Member] | Guofu Huimei Investment Management Limited Partnership [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Partners' Capital Account, Contributions |  |  |  |  |  |  | ¥ 746,000 |  |  |  |  |  |  |  |  |  |  |
Beijing Century Friendship Science and Technology Development Co., Ltd. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  |  |  |  |  |  |  |  |  |  | 42.10% |  |  |  |  |  |  |
Beijing Century Friendship Science and Technology Development Co., Ltd. [Member] | Guofu Huimei Investment Management Limited Partnership [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  | 78.31% |  |  |  |  |  |  |  |  |  |  |  |
Beijing Allcure Medical Technology Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recognized a gain on the disposal |  |  |  |  | ¥ 59 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest transferred |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration |  |  |  |  | ¥ 3 |  |  |  |  |  |  |  |  |  |  |  |  |
CMS Radiotherapy Holdings Limited [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recognized a gain on the disposal |  |  |  |  |  |  |  |  |  | ¥ 3,341 |  |  |  |  |  |  |  |
Percentage of equity interest transferred |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00%
Disposal Group, Including Discontinued Operation, Consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 8,594
Beijing Century Friendship and BPMC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Loss On Disposal Beijing Century Friendship and BPMC |  |  |  |  |  | ¥ 58,854 |  |  |  |  |  |  |  |  |  |  |  |
Beijing Century Friendship and BPMC [Member] | Beijing Century Friendship Science and Technology Development Co., Ltd. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  |  |  |  |  |  |  |  |  |  | 21.69% |  |  |  |  |  |  |
Guofu Huimei [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% | 26.06% |
Guofu Huimei [Member] | Beijing Century Friendship Science and Technology Development Co., Ltd. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  |  |  |  |  |  |  |  |  |  | 20.41% |  |  |  |  |  |  |
Beijing MeizhongJiahe Hospital Management Co., Ltd. ("MHM") [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  |  |  |  |  |  |  | 60.00% |  |  |  | 60.00% |  |  |  |  |  |
Beijing MeizhongJiahe Hospital Management Co., Ltd. ("MHM") [Member] | Beijing Century Friendship Science and Technology Development Co., Ltd. [Member] | Guofu Huimei Investment Management Limited Partnership [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 78.31% |  |
Shanghai Meizhongjiahe ProMed Cancer Centers Co., Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subscribed Amount to be Injected in Acquisition of Equity Interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 182,100 |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90.00% | 35.20% |
Shanghai Meizhongjiahe ProMed Cancer Centers Co., Ltd [Member] | Beijing Century Friendship Science and Technology Development Co., Ltd. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 54.80% |  |
Beijing Proton Medical Center [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subscribed Amount to be Injected in Acquisition of Equity Interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 388,500 |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 55.00% | 25.00% |
Beijing Proton Medical Center [Member] | Beijing Century Friendship Science and Technology Development Co., Ltd. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  | 55.00% |  |  |  |  |  |  |  |  |  | 55.00% |  |
Beijing Proton Medical Center [Member] | King Cheers Holdings Limited ("King Cheers") [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |
Shanghai Rongchi Medical Management Limited [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  |  |  |  |  |  |  | 99.90% |  |  |  | 99.90% |  |  |  |  |  |
Guofu Huimei, Beijing Century Friendship, BPMC And CMCC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  |  |  | ¥ 28,846 |  |  |  |  |  |  |  |
Goodwill |  |  |  | ¥ 165,171 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guofu Huimei, Beijing Century Friendship, BPMC And CMCC [Member] | Operating license [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of licenses | agreement |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated amortization periods |  |  |  | 20 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guofu Huimei, Beijing Century Friendship, BPMC And CMCC [Member] | Operating License Agreement One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquired amortizable intangible assets |  |  |  | ¥ 164,440 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guofu Huimei, Beijing Century Friendship, BPMC And CMCC [Member] | Operating License Agreement Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquired amortizable intangible assets |  |  |  | 272,910 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guofu Huimei, Beijing Century Friendship, BPMC And CMCC [Member] | Favorable leases [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquired amortizable intangible assets |  |  |  | ¥ 16,010 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated amortization periods |  |  |  | 12 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tianjin Jiatai Group [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Fund Operations of Acquiree |  |  |  |  |  |  |  |  |  |  |  | ¥ 84,000 |  |  |  |  |  |
Gain On Revaluation Of Investment |  |  |  |  |  |  |  | $ 4,582 | ¥ 31,898 |  |  |  |  |  |  |  |  |
Acquired amortizable intangible assets |  |  |  |  |  |  |  |  |  |  |  | 5,000 |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 45,272 |  |  |  |  |
Tianjin Jiatai Group [Member] | Operating license [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated amortization periods |  |  |  |  |  |  |  | 20 years | 20 years |  |  |  |  |  |  |  |  |
Tianjin Jiatai Group [Member] | Favorable leases [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated amortization periods |  |  |  |  |  |  |  | 17 years | 17 years |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  | $ 6,503 |  |  |  | ¥ 45,272 |  |  |  |  |  |
Tianjin Jiatai Group [Member] | ZR Guofu [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest transferred | 77.18% | 77.18% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred | $ 60,578 | ¥ 421,730 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tianjin Jiatai Group [Member] | SH MZJH |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest transferred |  |  | 90.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  | ¥ 27,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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