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Revenue - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($) asset	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($) asset	Sep. 11, 2024 asset
Revenue from Contract with Customer [Abstract]
Number of operating assets, trigger event | asset		3		3	7
Incentive fee, leased rate					0.85
Incentive fee revenue | $	$ 0.0	$ 4.8	$ 0.0	$ 4.8

X

- Definition

Incentive Fee, Leased Rate

+ References

No definition available.

+ Details

Name:	chci_IncentiveFeeLeasedRate
Namespace Prefix:	chci_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

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

X

- Definition

Number Of Operating Assets, Related To Triggering Events

+ References

No definition available.

+ Details

Name:	chci_NumberOfOperatingAssetsRelatedToTriggeringEvents
Namespace Prefix:	chci_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration