Related Party Transactions - Schedule of Market Rate Fee (Details) - CDS $ in Millions	Jun. 13, 2022 USD ($)
Asset Management Fee \| 2022 Amended Asset Management Agreement
Related Party Transaction [Line Items]
Percentage of CRE portfolio revenues	2.50%
Asset Management Fee \| Two Thousand Nineteen Amended And Restated Asset Management Agreement
Related Party Transaction [Line Items]
Percentage of CRE portfolio revenues	2.50%
Entitlement Fee \| 2022 Amended Asset Management Agreement
Related Party Transaction [Line Items]
Percentage of re-zoning costs	15.00%
Development and Construction Fee \| 2022 Amended Asset Management Agreement
Related Party Transaction [Line Items]
Percentage of anchor portfolio revenue	5.00%
Development and Construction Fee \| Two Thousand Nineteen Amended And Restated Asset Management Agreement
Related Party Transaction [Line Items]
Percentage of anchor portfolio revenue	4.00%
Property Management Fee \| 2022 Amended Asset Management Agreement
Related Party Transaction [Line Items]
Percentage of CRE portfolio revenues	1.00%
Property Management Fee \| Two Thousand Nineteen Amended And Restated Asset Management Agreement
Related Party Transaction [Line Items]
Percentage of CRE portfolio revenues	1.00%
Acquisition Fee \| 2022 Amended Asset Management Agreement \| Asset Management Agreement
Related Party Transaction [Line Items]
Asset acquisition, price of acquisition, expected	$ 50
Acquisition Fee \| 2022 Amended Asset Management Agreement \| Minimum
Related Party Transaction [Line Items]
Percentage of purchase price	1.00%
Acquisition Fee \| 2022 Amended Asset Management Agreement \| Maximum
Related Party Transaction [Line Items]
Percentage of purchase price	0.50%
Acquisition Fee \| Two Thousand Nineteen Amended And Restated Asset Management Agreement
Related Party Transaction [Line Items]
Percentage of purchase price	0.50%
Disposition Fee \| 2022 Amended Asset Management Agreement \| Asset Management Agreement
Related Party Transaction [Line Items]
Asset acquisition, price of acquisition, expected	$ 50
Disposition Fee \| 2022 Amended Asset Management Agreement \| Minimum
Related Party Transaction [Line Items]
Percentage sales price of an asset on disposition	1.00%
Disposition Fee \| 2022 Amended Asset Management Agreement \| Maximum
Related Party Transaction [Line Items]
Percentage sales price of an asset on disposition	0.50%
Disposition Fee \| Two Thousand Nineteen Amended And Restated Asset Management Agreement
Related Party Transaction [Line Items]
Percentage sales price of an asset on disposition	0.50%

Related party transaction percentage of all costs associated with portfolio projects in development.

No definition available.

Name:	chci_RelatedPartyTransactionPercentageOfAllCostsAssociatedWithPortfolioProjectsInDevelopment
Namespace Prefix:	chci_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Related party transaction percentage of portfolio revenues.

+ References

No definition available.

+ Details

Name:	chci_RelatedPartyTransactionPercentageOfPortfolioRevenues
Namespace Prefix:	chci_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Related party transaction percentage of purchase price of acquired asset.

+ References

No definition available.

+ Details

Name:	chci_RelatedPartyTransactionPercentageOfPurchasePriceOfAcquiredAsset
Namespace Prefix:	chci_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Related Party Transaction Percentage of Re-zoning Costs

+ References

No definition available.

+ Details

Name:	chci_RelatedPartyTransactionPercentageOfReZoningCosts
Namespace Prefix:	chci_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Related party transaction percentage of sales price of asset on disposition.

+ References

No definition available.

+ Details

Name:	chci_RelatedPartyTransactionPercentageOfSalesPriceOfAssetOnDisposition
Namespace Prefix:	chci_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Purchase price of expected asset acquisition prior to consideration being transferred. Excludes business acquisition.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 50
-Section 15
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=6911878&loc=d3e8732-128492

+ Details

Name:	us-gaap_AssetAcquisitionPriceOfAcquisitionExpected
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

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

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=chci_AssetManagementFeeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=chci_TwoThousandTwentyTwoAmendedAndRestatedAssetManagementAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=chci_ComstockDevelopmentServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=chci_TwoThousandNineteenAmendedAndRestatedAssetManagementAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=chci_EntitlementFeeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=chci_DevelopmentAndConstructionFeeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=chci_PropertyManagementFeeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=chci_AcquisitionFeeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AssetAcquisitionAxis=chci_AssetManagementAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=chci_DispositionFeeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: