DEFERRED REVENUE - Summary of Deferred Revenue (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
DEFERRED REVENUE
Deferred Oil Exploration Lease Revenue		$ 585,675
Interest Reserve from Commercial Loan Investment	$ 834,972
Prepaid Rent	2,063,173	1,621,620
Tenant Contributions	2,888,822	4,104,151
Other Deferred Revenue	43,753	58,838
Deferred Revenue, Total	$ 5,830,720	$ 6,370,284

Amount of deferred revenues classified as other.

No definition available.

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- Definition

Amount of deferred revenues classified as contribution from tenant.

+ References

No definition available.

+ Details

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Namespace Prefix:	cto_
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Period Type:	instant

- Definition

Interest reserve from commercial loan investment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

Amount at the balance sheet date that has been received by the entity that represents rents paid in advance.

+ References

No definition available.

+ Details

Name:	us-gaap_AdvanceRent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(5))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of deferred lease income. Includes, but is not limited to, amount paid in advance by lessee.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.15)
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant