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

Per basic share amount, after tax, of the gain (loss) on the sale of mitigation credits.

No definition available.

Name:	cto_GainLossOnSaleOfMitigationCreditsNetOfTaxPerBasicShare
Namespace Prefix:	cto_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

The combined cost basis of impact fee credits and mitigation credits as of the balance sheet date.

No definition available.

Name:	cto_ImpactFeeAndMitigationCredits
Namespace Prefix:	cto_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the cost basis of impact fee credits, as of the balance sheet date.

No definition available.

Name:	cto_ImpactFeeCredits
Namespace Prefix:	cto_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the cost basis of mitigation credits as of the balance sheet date.

No definition available.

Name:	cto_MitigationCredits
Namespace Prefix:	cto_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of proceeds received for the sale of mitigation credits during the reporting period.

No definition available.

Name:	cto_MitigationCreditsSalesProceeds
Namespace Prefix:	cto_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the cost basis of mitigation credits transferred to expense, which were utilized to resolve required mitigation activities.

No definition available.

Name:	cto_MitigationCreditsTransfersToExpense
Namespace Prefix:	cto_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Cash received from impact fee credits during the current period.

No definition available.

Name:	cto_ProceedsFromImpactFeeCredits
Namespace Prefix:	cto_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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.

No definition available.

Name:	us-gaap_RealEstateLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Name:	us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Indicates type of revenue from product and service. Includes, but is not limited to, revenue from contract with customer and other sources.

No definition available.

Name:	us-gaap_TypeOfRevenueExtensibleList
Namespace Prefix:	us-gaap_
Data Type:	srt-types:extensibleListItemType
Balance Type:	na
Period Type:	duration

Name:	srt_CounterpartyNameAxis=cto_LandsharkBarGrillMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_ProductOrServiceAxis=cto_ImpactFeeAndMitigationCreditSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_StatementBusinessSegmentsAxis=cto_RealEstateOperationsSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: