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Organization and Basis Of Presentation (Details) (USD $)	Dec. 31, 2012
Percentage of Transcontinental Realty Investors, Inc on common stock	81.10%
Land in acres	178.1
Note Receivables due from related parties	$ 25,400,000

X

- Definition

Acres of land held for sale.

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No definition available.

+ Details

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Namespace Prefix:	fil_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amounts due from parties associated with the reporting entity as evidenced by a written promise to pay, due within 1 year (or 1 business cycle).

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No definition available.

+ Details

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Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Percentage of stock held by Transcontinental Realty Investors, Inc. in the common stock of Income Opportunity Realty Investors Inc.

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No definition available.

+ Details

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Namespace Prefix:	fil_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant