Equity Method Investments - Schedule of Equity Method Investments (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Schedule of Equity Method Investments [Line Items]
Investment Basis	$ 23,647	$ 29,157
Share of Investee's Net Assets	12,806	16,546
Basis Difference	10,841	12,611
Share of Earnings (Loss)	(873)	(1,289)
Fair Value	$ 353,387	$ 351,458
Sandstone Pasadena Apartments, LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership	50.00%	50.00%
Investment Basis	$ 7,750	$ 8,114
Share of Investee's Net Assets	(9,590)	(9,590)
Basis Difference	17,340	17,704
Share of Earnings (Loss)	$ (563)	$ (1,741)
AM Uptown Hotel, LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership	60.00%	60.00%
Investment Basis	$ (6,940)	$ (4,631)
Share of Investee's Net Assets	371	339
Basis Difference	(7,311)	(4,970)
Share of Earnings (Loss)	$ 243	$ 57
Las Vegas Land Owner, LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership	75.00%	77.00%
Investment Basis	$ 10,269	$ 12,324
Share of Investee's Net Assets	10,269	12,324
Basis Difference	0	0
Share of Earnings (Loss)	$ (244)	$ 3
Perilune Aero Equity Holdings One, LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership	16.40%	16.40%
Investment Basis	$ 12,568	$ 12,650
Share of Investee's Net Assets	11,756	11,756
Basis Difference	812	894
Share of Earnings (Loss)	$ (83)	$ 100
Capital Acquisitions Partners, LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership	20.90%	20.90%
Investment Basis	$ 0	$ 700
Share of Investee's Net Assets	0	1,717
Basis Difference	0	(1,017)
Share of Earnings (Loss)	$ (226)	$ 292
Claymore Holdings, LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership	50.00%	50.00%
Fair Value	$ 0	$ 0
NexPoint Real Estate Finance Operating Partnership, L.P.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership	12.90%	12.90%
Fair Value	$ 62,261	$ 56,557
NexPoint Real Estate Finance, Inc.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership	15.80%	15.90%
Fair Value	$ 45,760	$ 41,568
VineBrook Homes Operating Partnership, L.P.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership	12.00%	12.30%
Fair Value	$ 111,015	$ 118,599
NexPoint Storage Partners, Inc.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership	54.50%	53.00%
Fair Value	$ 55,441	$ 51,673
NexPoint Storage Partners Operating Company, LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership	33.70%	33.80%
Fair Value	$ 35,946	$ 34,470
NexPoint SFR Operating Partnership, L.P.
Schedule of Equity Method Investments [Line Items]
Percentage Ownership	28.00%	28.00%
Fair Value	$ 21,632	$ 28,573
LLV Holdco, LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership	26.80%	26.80%
Fair Value	$ 2,201	$ 1,598
AMS C-Store JV, LLC
Schedule of Equity Method Investments [Line Items]
Percentage Ownership	100.00%	100.00%
Fair Value	$ 19,131	$ 18,420

Equity Method Investment, Share Of Earnings (Loss)

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Equity Method Investments And Other Investments At Fair Value

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Equity Method Investments, Investment Basis

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Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the entity's ownership percentage in the investee multiplied by the investee's total equity.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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