OTHER ASSETS (Details)	9 Months Ended
Sep. 30, 2018 USD ($) installment building	Dec. 31, 2017 USD ($) installment
Income properties
Income Property Tenant Receivables	$ 356,261	$ 895,476
Income Property Straight-line Rent Adjustment	3,877,667	2,517,195
Income Property Lease Incentive	2,469,853	2,696,678
Interest Receivable from Commercial Loan Investments		38,078
Cash Flow Hedge	942,658	606,621
Infrastructure Reimbursement Receivables	2,125,108	2,213,305
Golf Operations Receivables	244,045	349,220
Deferred Deal Costs	516,201	480,257
Prepaid Expenses, Deposits, and Other	4,321,106	3,174,299
Total Other Assets	14,852,899	$ 12,971,129
Tanger
Income properties
Infrastructure Reimbursement Receivables	$ 1,600,000
Number of installments to repay infrastructure reimbursement receivable \| installment	9
Infrastructure reimbursement receivables, installment payment amounts	$ 175,000
Infrastructure reimbursement receivable, discount	158,000
Sam's Club
Income properties
Infrastructure Reimbursement Receivables	770,000
Number of installments to repay infrastructure reimbursement receivable \| installment		7
Infrastructure reimbursement receivables, installment payment amounts		$ 110,000
Infrastructure reimbursement receivable, discount		$ 62,000
Hilton Grand Vacations
Income properties
Income Property Lease Incentive	$ 2,500,000
Number of real estate properties \| building	2
Funding for tenant improvements	$ 2,700,000
Accumulated amortization	$ 277,000

Golf operations receivables.

No definition available.

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Period Type:	instant

- Definition

Income property tenant receivables.

+ References

No definition available.

+ Details

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Namespace Prefix:	cto_
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- Definition

Infrastructure reimbursement receivables.

+ References

No definition available.

+ Details

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Namespace Prefix:	cto_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Represents the discount on the infrastructure reimbursement receivable.

+ References

No definition available.

+ Details

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

- Definition

The amount of installments of the infrastructure reimbursement receivable to be paid over the term of the receivable.

+ References

No definition available.

+ Details

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

- Definition

The number of installment payments of the infrastructure reimbursement receivable to be paid as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Aggregate amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment in the future and amount of miscellaneous other assets.

+ References

No definition available.

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Balance Type:	debit
Period Type:	instant

- Definition

The carrying amount of deferred costs.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property, by the lessor or lessee, respectively. Such receivable is reduced by allowances attributable to, for instance, credit risk associated with a lessee.

+ References

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

- Definition

This element represents the amount of accumulated amortization as of the reporting date of deferred lease revenue which amortization represents the cumulative amount of deferred lease revenue which has been recognized in income since the amount was established.

+ References

+ Details

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- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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- Definition

This item represents the deferred charge for an incentive or inducement granted by a lessor to a lessee, in order to motivate the lessee to enter the lease agreement, which incentive or inducement is to be recognized as a reduction of rental revenue over the lease term.

+ References

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- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

+ References

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

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- Definition

Amount of assets classified as other.

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Balance Type:	debit
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- 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

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Balance Type:	credit
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- 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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Period Type:	duration

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