ORGANIZATION AND BASIS OF PRESENTATION (Details Narrative)	6 Months Ended
Jun. 30, 2018 ft² Number
Number of income-producing properties	53
Rentable square feet \| ft²	1,700,000
Number of apartment units	8,195
Acres of land \| ft²	3,492
Related Party [Member]
Percentage of ownership	80.00%
Minimum [Member]
Percentage of ownership	20.00%
Remaining amortization period for deferred financing costs	6 months
Maximum [Member]
Percentage of ownership	50.00%
Remaining amortization period for deferred financing costs	40 years
Buildings And Improvements [Member] \| Minimum [Member]
Useful life of fixed assets	10 years
Buildings And Improvements [Member] \| Maximum [Member]
Useful life of fixed assets	40 years
Furniture, Fixtures And Equipment [Member] \| Minimum [Member]
Useful life of fixed assets	5 years
Furniture, Fixtures And Equipment [Member] \| Maximum [Member]
Useful life of fixed assets	10 years
Apartment Buildings [Member]
Number of income-producing properties	45
Projects in development	10
Transcontinential Realty Investors [Member]
Ownership interest	78.00%
Transcontinential Realty Investors [Member] \| Income Opportunity Realty Investors, Inc. [Member]
Ownership interest	81.25%

The number of projects in development.

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- Definition

The period remaining for amortization of deferred financing costs, as tied to the term of the related financing agreement.

+ References

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- Definition

Area of land held.

+ References

No definition available.

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- 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

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

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- Definition

Net rentable area for properties owned.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

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

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No definition available.

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- 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.

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