ORGANIZATION AND BASIS OF PRESENTATION (Details Narrative)	3 Months Ended
Mar. 31, 2017 ft² a Number
Number of apartment units	8,226
Number of apartment communities	50
Number of properties	58
Rentable square feet \| ft²	1,700,000
Acres of land \| ft²	3,517
Area of land comprising golf course \| a	96.09
Minimum [Member]
Percentage of ownership	20.00%
Period of amortization financing costs	6 months
Maximum [Member]
Percentage of ownership	50.00%
Period of amortization financing costs	40 years
Commercial Properties [Member]
Number of properties	7
Office Buildings [Member]
Number of properties	5
Retail Centers [Member]
Number of properties	2
Apartment Projects in Development [Member]
Number of properties	5
Buildings and Improvements [Member] \| Minimum [Member]
Useful life of property, plant and equipment	10 years
Buildings and Improvements [Member] \| Maximum [Member]
Useful life of property, plant and equipment	40 years
Fixtures and Equipment [Member] \| Minimum [Member]
Useful life of property, plant and equipment	5 years
Fixtures and Equipment [Member] \| Maximum [Member]
Useful life of property, plant and equipment	10 years
Income Opportunities Realty Investors, Inc. [Member]
Percentage of ownership	81.10%
American Realty Investors, Inc [Member]
Percentage of ownership	0.90%

Information related to area of land comprising golf course.

No definition available.

Name:	tci_AreaOfLandComprisingGolfCourse
Namespace Prefix:	tci_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of apartment units.

+ References

No definition available.

+ Details

Name:	tci_NumberOfApartmentCommunities
Namespace Prefix:	tci_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Period when adjustments to the carrying value of financing costs are amortized, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	tci_PeriodOfAmortizationFinancingCosts
Namespace Prefix:	tci_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Area of land held.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfLand
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Net rentable area for properties owned.

+ References

No definition available.

+ Details

Name:	us-gaap_NetRentableArea
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of units in a real estate property owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfUnitsInRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=tci_CommericalPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_RetailSiteMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=tci_ApartmentProjectsInDevelopmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingAndBuildingImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConsolidatedEntitiesAxis=us-gaap_EquityMethodInvesteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=tci_AmericanRealtyInvestorsIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: