LAND AND SUBSURFACE INTERESTS - Land Sales and Impairments (Details) ft² in Millions	3 Months Ended
Mar. 31, 2017 USD ($) ft² a $ / a	Mar. 31, 2016 USD ($) a $ / a
Land and subsurface interests
Area of real estate property \| ft²	1.8
Gross Sales Price	$ 38,713,284	$ 18,354,435
Impairment charges		$ 209,908
Commercial
Land and subsurface interests
Acres \| a		3.1
Gross Sales Price		$ 190,000
Price per Acre \| $ / a		61,000
Gain on Sale		$ 145,000
Undeveloped Land
Land and subsurface interests
Impairment charges	$ 0	$ 0
NADG - Out Parcel
Land and subsurface interests
Acres \| a		4.4
Gross Sales Price		$ 2,000,000
Price per Acre \| $ / a		455,000
Gain on Sale		$ 1,304,000
Tomoka Town Center - Percentage of Completion Revenue		$ 2,000,000
Land Sales
Land and subsurface interests
Acres \| a	1,587.35	7.5
Gross Sales Price	$ 28,707,000
Price per Acre \| $ / a	18,000
Gross Sales Price		$ 2,190,000
Price per Acre \| $ / a		292,000
Gain on Sale	$ 20,052,000	$ 1,449,000
Land Sales \| Commercial
Land and subsurface interests
Acres \| a	6.35
Gross Sales Price	$ 1,556,000
Price per Acre \| $ / a	245,000
Gain on Sale	$ 11,000
Land Sales \| Minto Communities LLC
Land and subsurface interests
Acres \| a	1,581.00
Gross Sales Price	$ 27,151,000
Price per Acre \| $ / a	17,000
Gain on Sale	$ 20,041,000

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

No definition available.

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

- Definition

Revenue per acre.

+ References

No definition available.

+ Details

Name:	cto_RevenuePerAcre
Namespace Prefix:	cto_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	duration

- Definition

Area of land held.

+ References

No definition available.

+ Details

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

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

+ Details

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

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.

+ References

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

+ Details

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

- Definition

Revenue from the sale of land in the reporting period.

+ References

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

+ Details

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

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

- Definition

This element represents the recognition of revenue during the period for retail land sales which had been deferred due to such revenue being associated with the liability of the land developer (seller) as its obligation to complete improvements to land, which improvements were a component of the sales transaction. Such amount is generally recognized in revenue as the improvements are completed (percentage-of-completion).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 976
-SubTopic 605
-Section 55
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=68080537&loc=d3e24124-108672

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 976
-SubTopic 605
-Section 30
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68074414&loc=d3e23564-108670

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 976
-SubTopic 605
-Section 55
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=68080537&loc=d3e23992-108672

+ Details

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

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

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)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

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

- Details

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

- Details

Name:	us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=cto_UndevelopedLandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=cto_NADGOutParcelMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=cto_LandSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=cto_MintoCommunitiesLlcMember
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Data Type:	na
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