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Revenue from the sale of land per area unit of land in the reporting period.

No definition available.

Name:	cto_LandSalesPerAreaOfLand
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Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	duration

Remaining term at the acquisition date of the lessor's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	cto_LessorLeasingArrangementsOperatingLeasesRemainingTermOfContractAtAcquisitionDate
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Data Type:	xbrli:durationItemType
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Represents the number of tenants occupying a leased property.

No definition available.

Name:	cto_NumberOfTenantsLeasedProperty
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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents the occupancy percentage.

No definition available.

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Balance Type:	na
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Percentage of proceeds from sale reinvested through like-kind exchange structure.

No definition available.

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Amount of cash received for the sale of real estate remaining to be utilized to acquire another replacement asset through an Internal Revenue Code 1031 like-kind exchange structure.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Area of land held.

No definition available.

Name:	us-gaap_AreaOfLand
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Period Type:	instant

Area of a real estate property.

No definition available.

Name:	us-gaap_AreaOfRealEstateProperty
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Period Type:	instant

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

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Data Type:	xbrli:monetaryItemType
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The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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

Revenue from the sale of land in the reporting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

Name:	us-gaap_SubsequentEventLineItems
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Data Type:	xbrli:stringItemType
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Period Type:	duration

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Balance Type:
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Name:	us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=cto_CommercialRealEstateMultipleTenantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
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Name:	us-gaap_StatementGeographicalAxis=cto_BostonMassachusettsMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_RetailSiteMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_StatementGeographicalAxis=cto_TampaFloridaMember
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Data Type:	na
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Name:	us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=cto_CommercialRealEstateSingleTenantMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_TransactionTypeAxis=cto_VantrustLandSaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_TransactionTypeAxis=cto_MintoCommunitiesLimitedLiabilityCompanyLandSaleMember
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