Name:	cto_GainLossOnSaleOfPropertiesNetOfTaxPerShareBasic
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Balance Type:	na
Period Type:	duration

Area of land sold in the reporting period.

No definition available.

Name:	cto_LandSalesAreaOfLand
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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
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Data Type:	xbrli:durationItemType
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Period of term of the lessor's leasing arrangement, after which additional annual rental payments may be received, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

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Data Type:	xbrli:durationItemType
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Period Type:	duration

Period of term of the lessor's leasing arrangement, after which the lessee has the option to terminate the lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	cto_LessorLeasingArrangementsOperatingLeasesPeriodOfTermOfContractSubjectToLesseeTerminationOption
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Lessor, Operating Lease, Drilling Penalty, Amount

No definition available.

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

Lessor, Operating Lease, Lease Payment, Amount

No definition available.

Name:	cto_LessorOperatingLeaseLeasePaymentAmount
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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
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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.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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Are of land for which the surface entry rights were released.

No definition available.

Name:	cto_ReleaseOfSubsurfaceInterestAreaOfLand
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Data Type:	num:areaItemType
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Period Type:	duration

- References

No definition available.

Name:	srt_ExtractiveIndustriesAbstract
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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)

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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
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Area of land held.

No definition available.

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

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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

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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.

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Data Type:	xbrli:durationItemType
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- 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

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Data Type:	xbrli:monetaryItemType
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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:
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Balance Type:
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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:
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Name:	srt_CounterpartyNameAxis=cto_LeaseYearThreeFromTwentyThreeSeptemberTwentyThirteenToTwentyTwoSeptemberTwentyFourteenMember
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Name:	srt_CounterpartyNameAxis=cto_LeaseYearFourFromTwentyThreeSeptemberTwentyFourteenToTwentyTwoSeptemberTwentyFifteenMember
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Balance Type:
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Name:	srt_CounterpartyNameAxis=cto_LeaseYearSixFromTwentyThreeSeptemberTwentySixteenToTwentyTwoSeptemberTwentySeventeenMember
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Balance Type:
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Name:	srt_CounterpartyNameAxis=cto_LeaseYearSevenFromTwentyThreeSeptemberTwentySeventeenToTwentyTwoSeptemberTwentyEighteenMember
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Name:	srt_CounterpartyNameAxis=cto_LeaseYearEightFromTwentyThreeSeptemberTwentyEighteenToTwentyTwoSeptemberTwentyNineteenMember
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Name:	srt_RangeAxis=srt_MaximumMember
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