COMMERCIAL LOAN INVESTMENTS - Additional Information (Details)	3 Months Ended
Mar. 31, 2017 USD ($) loan item	Dec. 31, 2016 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Remaining loan origination fee, net of loan costs	$ 1,158,841	$ 1,235,380
Current Face Amount	23,960,467
Commercial Loan Investments	$ 23,960,467	$ 23,960,467
Maturity period	1 year 9 months 18 days
Commercial
Accounts Notes And Loans Receivable [Line Items]
Number of loans owned \| loan	3
Mortgage loans, group One \| Commercial
Accounts Notes And Loans Receivable [Line Items]
Number of loans owned \| loan	1
Extension period	1 year
Mortgage loans group Two \| Commercial
Accounts Notes And Loans Receivable [Line Items]
Extension period	1 year
Number of extension periods \| item	2
Sarasota, Florida \| Notes Receivable \| Retail Shopping Center
Accounts Notes And Loans Receivable [Line Items]
Current Face Amount	$ 8,960,467
Commercial Loan Investments	8,960,467
Dallas, Texas \| Hotel [Member] \| Mezzanine
Accounts Notes And Loans Receivable [Line Items]
Current Face Amount	10,000,000
Commercial Loan Investments	10,000,000
Dallas, TX , Sarasota, FL, and Atlanta, GA [Member] \| Commercial
Accounts Notes And Loans Receivable [Line Items]
Commercial Loan Investments	$ 24,000,000
Commercial loan investments, average remaining maturity	7 months 6 days
Commercial loan investments, weighted average interest rate	9.10%

Maturity period for commercial loan.

No definition available.

Name:	cto_CommercialLoanMaturityPeriod
Namespace Prefix:	cto_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Remaining extension period for commercial loan.

+ References

No definition available.

+ Details

Name:	cto_CommercialLoanRemainingExtensionPeriod
Namespace Prefix:	cto_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Loans and leases receivable net average remaining maturity period.

+ References

No definition available.

+ Details

Name:	cto_LoansAndLeasesReceivableNetCommercialAverageRemainingMaturityPeriod
Namespace Prefix:	cto_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Loans and leases receivable weighted average interest rate.

+ References

No definition available.

+ Details

Name:	cto_LoansAndLeasesReceivableWeightedAverageInterestRate
Namespace Prefix:	cto_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of extension periods.

+ References

No definition available.

+ Details

Name:	cto_NumberOfExtensionPeriods
Namespace Prefix:	cto_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of loans owned.

+ References

No definition available.

+ Details

Name:	cto_NumberOfLoansOwned
Namespace Prefix:	cto_
Data Type:	xbrli:integerItemType
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

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

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

+ Details

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

- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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

- Details

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

- Details

Name:	us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=cto_MortgageLoansGroupOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=cto_MortgageLoansGroupTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementGeographicalAxis=cto_SarasotaFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_NotesReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cto_RetailShoppingCenterMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementGeographicalAxis=cto_DallasTexasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=cto_MezzanineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementGeographicalAxis=cto_DallasTXSarasotaFLAndAtlantaGAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: