BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) - PMC Commercial - USD ($)	Sep. 30, 2015	Mar. 11, 2014
Loans receivable
Discount on acquisition		$ 33,907,000
Unamortized amount of acquisition discounts of loans receivable	$ 21,048,000

Represents the information pertaining to discount adjustment between carrying value of our loans and estimated fair market value.

No definition available.

Name:	cmct_BusinessAcquisitionDiscountAdjustmentRecognizedAsDifferenceBetweenCarryingValueOfLoansAndEstimatedFairMarketValue
Namespace Prefix:	cmct_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant