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LEASE (Lease income) (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2020 USD ($)
Sales-type leases |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Interest income on net investment in the lease | ¥ 5,210 | $ 818 | ¥ 4,130 | $ 633
Including: Income relating to variable lease payments not included in the measurement of the net investment in a lease | 5,210 | 818 | 4,130 | 633
Direct financing leases |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Interest income on net investment in the lease | 1,361 | 214 | 2,929 | 449
Operating leases |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lease income relating to lease payments | 35,913 | 5,635 | 45,847 | 7,026
Including: Income relating to variable lease payments not included in the measurement of lease receivable | ¥ 33,793 | $ 5,303 | ¥ 38,999 | $ 5,977

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- Definition The amount represents interest income on net investment in the lease. + References No definition available. + Details
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Namespace Prefix: | ccm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The amount represents interest income relating to variable lease payments not included in lease receivable. + References No definition available. + Details
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Namespace Prefix: | ccm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The amount represents interest income relating to variable lease payments not included in net investment. + References No definition available. + Details
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Namespace Prefix: | ccm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The amount represents lease income relating to lease payments. + References No definition available. + Details
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Namespace Prefix: | ccm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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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. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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Balance Type: |
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X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |