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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Key Money (Details) - USD ($) | Sep. 30, 2025 | Dec. 31, 2024
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Accounting Policies [Abstract] |  |
Deferred key money | $ 2,300,000 | $ 0
Deferred key money, accumulated amortization | $ 21,000 |

X
- Definition Deferred Key Money + References No definition available. + Details
Name: | cmct_DeferredKeyMoney
Namespace Prefix: | cmct_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Deferred Key Money, Accumulated Amortization + References No definition available. + Details
Name: | cmct_DeferredKeyMoneyAccumulatedAmortization
Namespace Prefix: | cmct_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration