The number of tenants.

No definition available.

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

- Definition

The amount of tenant improvement allowances and leasing commissions received.

+ References

No definition available.

+ Details

Name:	cto_TenantImprovementAllowancesAndLeasingCommissions
Namespace Prefix:	cto_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

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

- Definition

Net cash outflow for the allowance granted to lessee and/or direct costs incurred by lessor used to prepare the leased premises for tenant's occupancy; for costs that are essential to originating the lease and would not otherwise have been incurred without the lease agreement, including but not limited to, evaluating the lessee's credit condition, guarantees, and collateral and costs incurred in negotiating, processing, and executing the lease agreement; and for any commission(s) incurred.

+ References

No definition available.

+ Details

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

- Definition

Amount of cash outflow for the allowance granted to lessee and/or direct costs incurred by lessor used to prepare the leased premises for tenant's occupancy.

+ References

No definition available.

+ Details

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

- Definition

The cash outflow from the acquisition of property as primarily intended to generate income for its 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=121586364&loc=d3e3213-108585

+ Details

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

- Details

Name:	srt_StatementGeographicalAxis=cto_AtlantaGeorgiaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=cto_ChandlerArizonaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

COMMITMENTS AND CONTINGENCIES - Contractual Commitments - Expenditures (Details)	6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Feb. 21, 2020 USD ($)	Jan. 24, 2020 USD ($) tenant
Commitments
Purchase price	$ 137,235,000	$ 40,559,000
Atlanta, Georgia
Commitments
Tenant improvement allowances and leasing commissions	229,000		$ 460,000
Payments for Tenant Improvements	231,000
Chandler, Arizona
Commitments
Tenant improvement allowances and leasing commissions				$ 1,300,000
Payment of tenant improvement allowances and leasing commissions	$ 0
Number of tenant \| tenant				2