Related Party Transaction [Axis] Related Party [Member] Equity Components [Axis] Common Stock [Member] Treasury Stock, Common [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Related and Nonrelated Parties [Axis] Transcontinental Realty Investors, Inc [Member] Ownership [Axis] IOR [Member] Transcontinental Realty Investors, Inc. and Affiliates [Member] American Realty Investors, Inc. [Member] Transcontinental Realty Investors, Inc. [Member] Unified Housing Foundation, Inc. [Member] May Realty Holdings, Inc. [Member] American Realty Investors, Inc. [Member] Pillar [Member] Cover [Abstract] Document Type Amendment Flag Amendment Description Document Registration Statement Document Annual Report Document Quarterly Report Document Transition Report Document Shell Company Report Document Shell Company Event Date Document Period Start Date Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Current Fiscal Year End Date Entity File Number Entity Registrant Name Entity Central Index Key Entity Primary SIC Number Entity Tax Identification Number Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Three Entity Address, City or Town Entity Address, State or Province Entity Address, Country Entity Address, Postal Zip Code Country Region City Area Code Local Phone Number Extension Written Communications Soliciting Material Pre-commencement Tender Offer Pre-commencement Issuer Tender Offer Title of 12(b) Security No Trading Symbol Flag Trading Symbol Security Exchange Name Title of 12(g) Security Security Reporting Obligation Annual Information Form Audited Annual Financial Statements Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Elected Not To Use the Extended Transition Period Document Accounting Standard Other Reporting Standard Item Number Entity Shell Company Entity Public Float Entity Bankruptcy Proceedings, Reporting Current Entity Common Stock, Shares Outstanding Documents Incorporated by Reference [Text Block] Statement of Financial Position [Abstract] Assets Current assets Cash and cash equivalents Interest receivable from related parties Receivable from related parties Total current assets Non-current assets Notes receivable from related parties Total assets Liabilities and Equity Liabilities: Accounts payable Shareholders’ equity Common stock, $0.01 par value, 10,000,000 shares authorized; 4,173,675 shares issued and 4,066,178 shares outstanding. Treasury stock at cost, 107,497 shares. Additional paid-in capital Retained earnings Total shareholders’ equity Total liabilities and equity Common stock, par value (in dollars per share) Common stock, authorized Common stock, issued Common stock, outstanding Treasury stock Income Statement [Abstract] Revenues: Other income Expenses: General and administrative (including $11 and $12 for the three months ended March 31, 2026 and 2025, respectively, from related parties) Advisory fee to related party Total operating expenses Net operating loss Interest income from related parties Income tax provision Net income Earnings per share - basic Earnings per share - diluted Weighted average common shares used in computing basic earnings per share Weighted average common shares used in computing diluted earnings per share Statement [Table] Statement [Line Items] General and administrative Beginning balance, value Net income Ending balance, value Statement of Cash Flows [Abstract] Cash Flow From Operating Activities: Net  income Adjustments to reconcile net income to net cash (used in) provided by operating activities: Changes in assets and liabilities: Accrued interest on related party notes receivable Related party receivables Accounts payable Net cash (used in) provided by operating activities Cash Flow From Investing Activities: Collection of notes receivable Net cash provided by investing activities Net (decrease) increase in cash and cash equivalents Cash and cash equivalents, beginning of the period Cash and cash equivalents, end of the period Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization Accounting Policies [Abstract] Summary of Significant Accounting Policies Receivables [Abstract] Notes Receivable Related Party Transactions [Abstract] Related Party Transactions Equity [Abstract] Stockholders’ Equity Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Subsequent Events [Abstract] Subsequent Events Basis of Presentation Related Party Transaction [Table] Related Party Transaction [Line Items] Percentage of ownership Accounts and Financing Receivables [Table] Accounts, Notes, Loans and Financing Receivable [Line Items] Maturity date Interest rate Advisory fees paid Related party receivables Common stock repurchase limit Remaining shares for repurchase The amount of advisory fees to related parties, during the period. Unified Housing Foundation Inc. Transcontinental Realty Investors, Inc. May Realty Holdings, Inc. American Realty Investors, Inc. American Realty Investors, Inc. Pillar Transcontinental Realty Investors, Inc. and Affiliates Transcontinental Realty Investors, Inc. Income Opportunity Realty Investors, Inc. American Realty Investors, Inc. [Member] [Default Label] Assets, Current Assets [Default Label] Treasury Stock, Value Equity, Attributable to Parent Liabilities and Equity [Default Label] Costs and Expenses Operating Income (Loss) Income Tax Expense (Benefit) Increase (Decrease) in Notes Receivable, Related Parties Increase (Decrease) in Accounts Receivable, Related Parties Increase (Decrease) in Accounts Payable Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation