Future annual rental payments receivable under an operating lease.

No definition available.

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Namespace Prefix:	cto_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

Area of land held.

+ References

No definition available.

+ Details

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- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
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- Definition

Carrying amount as of the balance sheet date, net of valuation allowances and impairment losses, of costs of land expected to be developed in the near term plus capitalized costs of development, for purposes of selling completed units to home buyers or commercial or industrial entities..

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Period Type:	instant

- Definition

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

+ References

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=77888428&loc=SL77919359-209981

+ Details

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

- Definition

The cash outflow from the acquisition of real estate intended to generate income for the owner; excludes land acquired for use by the owner.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585

+ Details

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

- Definition

The number of units (items of property) under operating lease arrangements.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- 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

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=cto_LandAndDevelopmentMember
Namespace Prefix:
Data Type:	na
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Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=cto_IncomePropertiesLandBuildingsAndImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorPropertyClassAxis=cto_RestaurantPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseArrangementTypeAxis=cto_LandsharkBarGrillMember
Namespace Prefix:
Data Type:	na
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- Details

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LAND AND SUBSURFACE INTERESTS - Beachfront Venture and Daytona Beach (Details)	6 Months Ended
	Jun. 30, 2018 USD ($) a restaurant	Mar. 31, 2018 a	Dec. 31, 2017 USD ($) a	Jun. 30, 2016
Land and subsurface interests
Acquisition of property	$ 2,141,853
Cost basis	$ 31,371,995		$ 39,477,697
Daytona Beach, FL
Land and subsurface interests
Acres \| a	0.9	3
Land Parcel - Beachfront Property
Land and subsurface interests
Acres \| a			6
Cost basis	$ 6,800,000
Land Parcel - Beachfront Property \| Land and Development
Land and subsurface interests
Cost basis			$ 11,700,000
Land Parcel - Beachfront Property \| Income Properties Land Buildings and Improvements
Land and subsurface interests
Cost basis	$ 18,500,000
Land Parcel - Beachfront Property \| Restaurant property
Land and subsurface interests
Number of properties \| restaurant	2
Land Parcel - Beachfront Property \| Restaurant property \| LandShark Bar and Grill
Land and subsurface interests
Lease term	15 years
Square-Feet \| a	6,264
Land Parcel - Beachfront Property \| Restaurant property \| Cocina 214 Restaurant and Bar
Land and subsurface interests
Lease term				15 years
Annual minimum rent per year	$ 360,000