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Common and Preferred Stock Investments - Additional Information (Details) - $ / shares	Oct. 08, 2025	Jan. 02, 2025	Nov. 09, 2023	Mar. 31, 2026	Dec. 31, 2025
Schedule of Equity Method Investments [Line Items]
Private offering price per share (in dollars per share)				$ 20.06
Preferred stock, dividend rate, percentage			15.50%
Series E Preferred Stock [Member]
Schedule of Equity Method Investments [Line Items]
Preferred stock, dividend rate, percentage		16.50%
Series G Preferred Stock [Member]
Schedule of Equity Method Investments [Line Items]
Preferred stock, dividend rate, percentage	15.00%
Private REIT
Schedule of Equity Method Investments [Line Items]
Effective ownership				6.20%
VIE \| Resmark Forney Gateway Holdings, LLC
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage				98.00%
VIE \| Ridgeview Place
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage				5.90%
VIE \| Capital Acquisitions Partners, LLC
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage				79.10%
VIE \| NexPoint Storage Partners, Inc.
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage				26.00%	26.00%
VIE \| Private REIT
Schedule of Equity Method Investments [Line Items]
Effective ownership				6.20%	6.20%
Variable Interest Entity, Primary Beneficiary \| IQHQ Inc.
Schedule of Equity Method Investments [Line Items]
Effective ownership				11.80%
Variable Interest Entity, Primary Beneficiary \| IQHQ Inc. \| Series E Preferred Stock [Member]
Schedule of Equity Method Investments [Line Items]
Effective ownership				46.00%
Variable Interest Entity, Primary Beneficiary \| NSP \| Series G Preferred Stock [Member]
Schedule of Equity Method Investments [Line Items]
Effective ownership				95.40%