INCOME TAXES (Details) $ in Millions	9 Months Ended	12 Months Ended
Sep. 30, 2021 subsidiary	Dec. 31, 2020 USD ($)
INCOME TAXES
REIT Eligibility, Distributable , Minimum Percentage of Taxable Income, Excluding Net Capital Gains	90.00%
Number of taxable REIT subsidiaries \| subsidiary	5
Deferred tax benefit \| $		$ 82.5

" The amount of deferred tax benefit due to de recognition of deferred tax asset and liabilities included in real estate investment trust (REIT)."

No definition available.

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