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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Loans Receivable (Details) - USD ($) | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2015 | Mar. 11, 2014
Loans receivable |  |  |  |  |  |  |
Unamortized retained loan discounts | $ 7,557,000 |  | $ 7,557,000 |  | $ 7,234,000 |  |
Loan receivable, nonaccrual, past due period (more than) |  |  | 60 days |  |  |  |
Impairment on loans receivable | 1,000 | $ 0 | $ 58,000 | $ 0 |  |  |
SBA 7(a) loans receivable, subject to secured borrowings |  |  |  |  |  |  |
Loans receivable |  |  |  |  |  |  |
Unamortized acquisition discounts related to sold loans |  |  |  |  |  | $ 15,951,000 |
PMC Commercial |  |  |  |  |  |  |
Loans receivable |  |  |  |  |  |  |
Discount on acquisition |  |  |  |  |  |  | $ 33,907,000
Acquisition discount | $ 808,000 |  | $ 808,000 |  | $ 884,000 |  |

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- Definition Represents acquisition discounts. + References No definition available. + Details
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Balance Type: | debit
Period Type: | instant

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- Definition Represents the information pertaining to discount adjustment between carrying value of our loans and estimated fair market value. + References No definition available. + Details
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- Definition Amount of unamortized discount of loans acquired in connection with business combinations in a disposal group. + References No definition available. + Details
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Balance Type: | credit
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- Definition Loan And Leases Receivable, Nonaccrual Loan And Lease Status, Past Due Period + References No definition available. + Details
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Namespace Prefix: | cmct_
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- Definition Loans Receivable Held-For-Investment, Impairment + References No definition available. + Details
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Namespace Prefix: | cmct_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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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 Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533 + Details
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- Details
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- Details
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