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

Area of land sold in the reporting period.

No definition available.

Name:	cto_LandSalesAreaOfLand
Namespace Prefix:	cto_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	duration

Period of from end of prior lease year of the lessor's leasing arrangement, contingent rental payment is due, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	cto_LessorLeasingArrangementsOperatingLeasesContingentRevenuePeriodFromEndOfPriorLeaseYearContingentRentalPaymentIsDue
Namespace Prefix:	cto_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Lessor, Operating Lease, Drilling Penalty, Amount

No definition available.

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

Lessor, Operating Lease, Lease Payment, Amount

No definition available.

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

The number of counties in which the entity owns subsurface interests as of balance sheet date.

No definition available.

Name:	cto_NumberOfCountiesInWhichSubsurfaceInterestsAreOwned
Namespace Prefix:	cto_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

The revenue from real estate operations recognized for cash payments received for the release of surface entry rights during the reporting period.

No definition available.

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

Are of land for which the surface entry rights were released.

No definition available.

Name:	cto_ReleaseOfSubsurfaceInterestAreaOfLand
Namespace Prefix:	cto_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

Name:	srt_ExtractiveIndustriesAbstract
Namespace Prefix:	srt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Area assigned to productive oil and gas wells with working interest ownership.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1208
-Paragraph (a)

Name:	srt_GasAndOilAreaDevelopedGross
Namespace Prefix:	srt_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

Leased area with working interest ownership on which oil and gas wells have not been drilled or completed that would permit production of economic quantities of oil and gas. Excludes area of undrilled acreage held by production under terms of lease.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1208
-Paragraph (b)

Name:	srt_GasAndOilAreaUndevelopedGross
Namespace Prefix:	srt_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

Area of land held.

No definition available.

Name:	us-gaap_AreaOfLand
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

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/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2443-110228

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

Term of lessor's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919359-209981

Name:	us-gaap_LessorOperatingLeaseRenewalTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

Name:	us-gaap_LessorOperatingLeaseTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

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

Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919372-209981

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=77888421&loc=SL77919311-209978

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 50
-Paragraph 6A
-URI http://asc.fasb.org/extlink&oid=118952077&loc=SL77927221-108306

Name:	us-gaap_OperatingLeaseLeaseIncome
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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_StatementGeographicalAxis=cto_HendryCountyFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=cto_SubsurfaceInterestsInProductiveLandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_DrillingRightsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

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

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

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

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

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

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

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

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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