Operating Income, Lease Income, Percentage Of Total Amount Billed For Period

No definition available.

Name:	cmct_OperatingIncomeLeaseIncomePercentageOfTotalAmountBilledForPeriod
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Revenue From Contract With Customer, Excluding Assessed Tax, Average Daily Rate

+ References

No definition available.

+ Details

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Namespace Prefix:	cmct_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Revenue From Contract With Customer, Excluding Assessed Tax, Occupancy Rate

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Revenue From Contract With Customer, Excluding Assessed Tax, Revenue Per Available Room

+ References

No definition available.

+ Details

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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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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of lease payments to be received by lessor for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
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-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
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Period Type:

- Details

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Period Type:

- Details

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COVID-19 (Details) - USD ($)	1 Months Ended				3 Months Ended
COVID-19 (Details) - USD ($)	Apr. 30, 2020	Mar. 31, 2020	Apr. 30, 2019	Mar. 31, 2019	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Concentration Risk [Line Items]
Rental and other property income billed and collected, excluding amounts related to parking tenants					$ 14,819,000		$ 33,581,000
Rental and other property income billed and uncollected from parking tenants		$ 237,612,000			$ 237,612,000
Hotel occupancy rate		38.60%	83.30%	85.60%
Average daily rate		$ 172.05	$ 187.76	$ 176.12
Revenue per available room		$ 66.48	$ 156.38	$ 150.84
Hotel \| Revenues
Concentration Risk [Line Items]
Concentration risk, percent						22.00%
Subsequent Event
Concentration Risk [Line Items]
Percentage of rental and other property income billed and collected, excluding amounts related to parking tenants	90.00%
Rental and other property income billed and collected, excluding amounts related to parking tenants	$ 4,237,000
Rental and other property income billed and uncollected from parking tenants	$ 409,000
Hotel occupancy rate	12.80%
Average daily rate	$ 129.90
Revenue per available room	$ 16.56