Commitments and Contingencies (Details) - USD ($)	Feb. 15, 2023	Sep. 30, 2024	Apr. 24, 2023	Dec. 08, 2022	Feb. 15, 2022	Jul. 02, 2021
Other Commitments [Line Items]
Debt instrument, face amount					$ 39,300,000
Guarantor on Loans | NexPoint Hospitality Trust
Other Commitments [Line Items]
Other commitment		$ 140,500,000
Outstanding amount		74,400,000
Guarantor on Loans | White Rock Center
Other Commitments [Line Items]
Outstanding amount		10,000,000
Guarantor on Loans | Tivoli
Other Commitments [Line Items]
Outstanding amount		13,500,000
NexPoint Hospitality Trust | Guarantor on Loans
Other Commitments [Line Items]
Other commitment		74,400,000
NexPoint Storage Partners, Inc.
Other Commitments [Line Items]
Debt instrument, face amount						$ 235,860,000
NexPoint Storage Partners, Inc. | Guarantor on Loans
Other Commitments [Line Items]
Other commitment		245,200,000
Mezzanine Loan Agreement I | NexPoint Storage Partners, Inc.
Other Commitments [Line Items]
Debt instrument, face amount			$ 1,080,000.00			$ 6,050,000.00
REIT Sub and the Co-Guarantors
Other Commitments [Line Items]
Guarantor obligations, current carrying value		$ 11,600,000		$ 64,200,000
Guarantor obligations, maximum exposure				$ 97,600,000
Guarantor obligation, serverally liable, percentage		85.90%
REIT Sub and the Co-Guarantors | Promissory Notes
Other Commitments [Line Items]
Extinguishment of debt, amount	$ 15,000,000