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Agreement notice period required for non renewal.

No definition available.

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Leasing fee per square foot for new leases.

No definition available.

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Leasing fee per square foot for renewal leases.

No definition available.

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Number of installments of fee payment.

No definition available.

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Percentage of membership interest owned by company and partners.

No definition available.

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Property management agreements initial term.

No definition available.

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Property management agreements renewal term.

No definition available.

Name:	chci_PropertyManagementAgreementsRenewalTerm
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Related party transaction aggregate fee payable.

No definition available.

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Related Party Transaction, Expiration Period

No definition available.

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Related party transaction fee payable in installments.

No definition available.

Name:	chci_RelatedPartyTransactionFeePayableInInstallments
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Related party transaction maximum percentage of purchase price of acquired asset.

No definition available.

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

No definition available.

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Related party transaction percentage of cash flow from real estate assets.

No definition available.

Name:	chci_RelatedPartyTransactionPercentageOfCashFlowFromRealEstateAssets
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Data Type:	dtr-types:percentItemType
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Related party transaction percentage of construction management fee.

No definition available.

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Related party transaction percentage of portfolio revenues.

No definition available.

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Related party transaction percentage of raised capital.

No definition available.

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

No definition available.

Name:	chci_RelatedPartyTransactionPercentageOfSalesPriceOfAssetOnDisposition
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Data Type:	dtr-types:percentItemType
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Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

No definition available.

Name:	us-gaap_ContractualObligation
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Data Type:	xbrli:monetaryItemType
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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980

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Carrying amount of the unpaid portion of the fee payable to the managing member or general partner for management of the fund or trust.

No definition available.

Name:	us-gaap_ManagementFeePayable
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Data Type:	xbrli:monetaryItemType
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The percentage rate used to calculate dividend payments on preferred stock.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644

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Balance Type:	na
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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.

No definition available.

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

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Data Type:	na
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Namespace Prefix:
Data Type:	na
Balance Type:
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Namespace Prefix:
Data Type:	na
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Name:	us-gaap_TypeOfArrangementAxis=chci_TwoThousandNineteenAmendedAndRestatedAssetManagementAgreementMember
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Data Type:	na
Balance Type:
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Name:	us-gaap_RelatedPartyTransactionAxis=chci_AssetManagementFeeMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_RelatedPartyTransactionAxis=chci_ConstructionManagementFeeMember
Namespace Prefix:
Data Type:	na
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Namespace Prefix:
Data Type:	na
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Data Type:	na
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Data Type:	na
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Data Type:	na
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Name:	srt_RangeAxis=srt_MinimumMember
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Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
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Data Type:	na
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