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ACQUISITIONS AND DISPOSALS - Additional Information (Details) ¥ in Thousands, $ in Thousands |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |  |  |  |  |
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Jun. 28, 2024 | Dec. 27, 2023 CNY (¥) | Dec. 27, 2023 USD ($) | Dec. 27, 2023 HKD ($) | Mar. 01, 2023 CNY (¥) | Mar. 01, 2023 USD ($) | Jan. 31, 2021 CNY (¥) | Jan. 31, 2021 CNY (¥) | Dec. 31, 2024 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2022 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 04, 2024 | Apr. 26, 2024 CNY (¥) | Apr. 26, 2024 USD ($) | Apr. 25, 2024 CNY (¥) | Apr. 25, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 28, 2023 | Jan. 31, 2021 USD ($)
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | ¥ 368,221 | ¥ 368,221 | ¥ 572,216 |  | ¥ 575,427 | ¥ 575,427 | $ 78,393 |  |  |  |  |  | $ 78,833 |  | $ 57,782
Goodwill impairment charges |  |  |  |  |  |  |  |  | 0 | $ 0 | ¥ 0 | ¥ 0 |  |  |  |  |  |  |  |  |
Beijing Proton Medical Center Co., Ltd ("BPMC") |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest in equity method investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 54.01% |
New Spring Group and its subsidiary | Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of shares sold |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% |  |  |  |  |  |  |
Beijing Proton Medical Center |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of share consideration |  | 25.00% | 25.00% | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business combination, consideration transferred | $ |  |  |  | $ 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss recognized |  | ¥ 709 | $ 100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guangzhou Swallowing Home Health Management Co., Ltd. | New Spring Group and its subsidiary | Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, cash consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 1,945 | $ 267 |  |  |
Group recognized a total disposal gain |  |  |  |  |  |  |  |  | ¥ 2,486 | $ 341 |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  |  |  |  |  | Gain (Loss) on Disposition of Stock in Subsidiary | Gain (Loss) on Disposition of Stock in Subsidiary |  |  |  |  |  |  |  |  |  |  |
Percentage of shares sold |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% | 50.00% |  |  |
Percentage of interest held after disposal | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration amounts outstanding |  |  |  |  |  |  |  |  | ¥ 1,945 |  |  |  | $ 267 |  |  |  |  |  |  |  |
Guangzhou Yipusheng Health Management Co., Ltd. | DTMZ | Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, cash consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 10,000 | $ 1,370 |  |  |  |  |
Group recognized a total disposal gain |  |  |  |  |  |  |  |  | ¥ 45,510 | $ 6,235 |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  |  |  |  |  | Gain (Loss) on Disposition of Stock in Subsidiary | Gain (Loss) on Disposition of Stock in Subsidiary |  |  |  |  |  |  |  |  |  |  |
Guangzhou Yipusheng Health Management Co., Ltd. | New Spring Group and its subsidiary | Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Group recognized a total disposal gain |  |  |  |  |  |  |  |  | ¥ 120 | $ 16 |  |  |  |  |  |  |  |  |  |  |
Guangzhou Yipusheng Health Management Co., Ltd. | New Spring Group and its subsidiary | Not Discontinued Operations | Hospital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill of business reporting unit |  |  |  |  |  |  |  |  | ¥ 3,211 | $ 440 |  |  |  |  |  |  |  |  |  |  |
HealthingKon |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Voting interest acquired |  |  |  |  |  |  | 26.34% | 26.34% |  |  |  |  |  |  |  |  |  |  |  |  | 26.34%
Cash consideration |  |  |  |  |  |  | ¥ 21,500 | ¥ 21,500 |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated amortization periods |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | ¥ 368,221 | ¥ 368,221 |  |  |  |  |  |  |  |  |  |  |  |  |
Business combination, consideration transferred |  |  |  |  |  |  | ¥ 119,838 |  |  |  |  |  |  |  |  |  |  |  |  |  |
HealthingKon | Shanghai Meizhong Jiahe Imaging Diagnostic Center Co., Ltd. ("SH MZJH") |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of share consideration |  |  |  |  |  |  | 89.00% | 89.00% |  |  |  |  |  |  |  |  |  |  |  |  | 89.00%
Datong Meizhongjiahe |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ACQUISITIONS AND DISPOSALS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain recognized on disposal |  |  |  |  | ¥ 71 | $ 10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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