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Noncontrolling Interests
12 Months Ended
Dec. 31, 2021
Noncontrolling Interest [Abstract]  
Noncontrolling Interests Noncontrolling InterestsThe noncontrolling interest represents the third party ownership interest in Income Opportunity Realty Investors, Inc. ("IOR"). Shares of IOR are listed on the NYSE American under the symbol of IOR. We owned 81.1% in in IOR during the years ended December 31, 2021, 2020 and 2019.