Area of land owned.

No definition available.

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- Definition

Equity Securities, FV-NI, Investment, Ownership Percentage

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Number of commercial loan investment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of commercial properties.

+ References

No definition available.

+ Details

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- Definition

Ownership Interest in Joint Venture By Parent, Percentage

+ References

No definition available.

+ Details

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- Definition

Area of Subsurface Area of Portfolio Of Mineral Interest.

+ References

No definition available.

+ Details

Name:	cto_SubsurfaceAreaOfPortfolioOfMineralInterest
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Data Type:	xbrli:integerItemType
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- Definition

Area of land held.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740

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

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- 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

Name:	us-gaap_RealEstatePropertiesLineItems
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Balance Type:	na
Period Type:	duration

- Details

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Balance Type:
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- Details

Name:	srt_StatementGeographicalAxis=stpr_FL
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Balance Type:
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- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=cto_CommercialRealEstateSingleTenantMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=cto_CommercialRealEstateMultipleTenantsMember
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DESCRIPTION OF BUSINESS (Details) $ in Thousands, ft² in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) a ft² property country county loan	Dec. 31, 2021 USD ($)	Sep. 30, 2021	Mar. 31, 2021 a	Jun. 30, 2018
Real Estate Properties
Area of land (in acres) \| a	4,750			25,000
Number of commercial loan investment \| loan	3
Investment in Alpine Income Property Trust, Inc. \| $	$ 38,587	$ 41,037
Investment ownership percentage (as a percent)	7.00%
Mitigation Bank
Real Estate Properties
Interest in the joint venture (as a percent)	70.00%
Area of land owned \| a	2,500
Equity method investment, ownership percentage (as a percent)			30.00%		30.00%
Florida
Real Estate Properties
Number of states in which entity operates \| country	19
Subsurface area of portfolio of mineral interests \| a	365,000
Commercial Real Estate Portfolio Segment [Member]
Real Estate Properties
Number of commercial loan investment \| loan	3
Number of commercial properties	1
Commercial
Real Estate Properties
Number of real estate properties	21
Number of states in which entity operates \| county	9
Gross leasable space \| ft²	2.8
Single-tenant
Real Estate Properties
Number of real estate properties	7
Multi-tenant
Real Estate Properties
Number of real estate properties	14