The number of escrow accounts pertaining to a specific transaction or group of transactions.

No definition available.

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

- Definition

The number of land transactions.

+ References

No definition available.

+ Details

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

- Definition

The number of real estate properties that are part of a financing transaction.

+ References

No definition available.

+ Details

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

- Definition

Amount of increase in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, from new investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Footnote 6))
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

+ Details

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

- Definition

Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(1)(a))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(2))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=us-gaap_FirstMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis=cto_CapitalReplacementReserveAccountFinancingOfPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
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DESCRIPTION OF BUSINESS AND PRINCIPLES OF INTERIM STATEMENTS - Restricted Cash (Details)	6 Months Ended
	Jun. 30, 2019 USD ($) Transaction item property	Dec. 31, 2018 USD ($)	Jun. 30, 2018 USD ($) item
Restricted Cash
Restricted Cash	$ 59,035,150	$ 19,721,475	$ 2,419,686
First mortgage loan
Restricted Cash
Mortgage loan originated	8,000,000
Escrow deposit to be reinvested through like-kind exchange structure
Restricted Cash
Restricted Cash	56,500,000
Restricted cash, escrow deposit related to land transactions
Restricted Cash
Restricted Cash	$ 989,000,000
Number of separate escrow accounts \| item	5		2
Number of separate land transactions \| Transaction	2
Restricted cash, escrow deposit related to other income properties
Restricted Cash
Restricted Cash	$ 1,300,000
Capital replacement reserve account
Restricted Cash
Restricted Cash	$ 235,000
Number of real estate properties in financing \| property	6