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Revenue - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Revenue from Contract with Customer [Abstract] |  |
Incentive fee revenue | $ 4.8 | $ 3.9

X
- Definition Incentive Fee Revenue + References No definition available. + Details
Name: | chci_IncentiveFeeRevenue
Namespace Prefix: | chci_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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