Represents amount of paid and unpaid dividends declared per common stock as converted.

No definition available.

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Data Type:	num:perShareItemType
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Period Type:	duration

- Definition

Represents the dividends per share paid to the stockholders of an acquired entity on pro rata basis.

+ References

No definition available.

+ Details

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Namespace Prefix:	cmct_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:	cmct_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

The cash outflow in the form of dividends assumed related the acquisition of business during the period.

+ References

No definition available.

+ Details

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

- Definition

Represents the payment in cash - special dividend per share.

+ References

No definition available.

+ Details

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Namespace Prefix:	cmct_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

+ Details

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 405

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817

+ Details

Name:	us-gaap_DividendsPreferredStock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

+ Details

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

- Definition

Aggregate dividends declared during the period for each share of preferred stock outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_PreferredStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_BusinessAcquisitionAxis=cmct_PMCCommercialTrustMember
Namespace Prefix:
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DIVIDENDS DECLARED (Details) (USD $)	0 Months Ended		3 Months Ended		0 Months Ended
DIVIDENDS DECLARED (Details) (USD $)	Mar. 06, 2015	Mar. 24, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 10, 2014
Dividend declared
Common stock as converted dividend declared (in dollars per share)		$ 0.0285
Dividend paid				$ 16,100,000us-gaap_PaymentsOfDividendsCommonStock
Dividend paid				59,286,000
Common stock dividend declared (in dollars per share)	$ 0.21875	$ 0.05	$ 0.21875
Preferred dividend declared (in dollars per share)		$ 0.0403
Aggregate amount of dividend declared to preferred shareholders				2,621,000us-gaap_DividendsPreferredStock
CIM Urban Partners, L.P
Dividend declared
Common stock as converted dividend declared (in dollars per share)					$ 0.1685
Dividend paid					16,100,000
PMC Commercial \| CIM Urban Partners, L.P
Dividend declared
Dividend paid					$ 59,286,000
Dividend paid per common stock (in dollars per share)					$ 27.975
Payment in cash - special dividend (in dollars per share)					$ 27.50
Pro rata portion of regular quarterly cash dividend (in dollars per share)					$ 0.475