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Loans Held for Investment, Net - Narrative (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Jul. 31, 2024 USD ($) extension	Sep. 30, 2024 USD ($) loan	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Origination of loans held for investment		$ 57,180	$ 0	$ 0
Allowance for credit losses		343	0
Proceeds from deferred origination fees		700	$ 0	$ 0
Interest receivable		454
Unfunded Loan Commitment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commitment		259
Mortgage Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commitment		$ 67,000
Number of loans | loan		2
Proceeds from deferred origination fees		$ 700
Unamortized costs		651
Exit fee receivable		35
Mortgage Receivable | Unfunded Loan Commitment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commitment		9,820
Hotel | Mortgage Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commitment	$ 40,000
Interest rate	3.95%
Initial term (in years)	2 years
Number of extensions | extension	3
Duration of extension (in years)	1 year
Industrial Property | Mortgage Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commitment	$ 27,000
Origination of loans held for investment		$ 17,180
Interest rate	4.25%
Initial term (in years)	3 years
Number of extensions | extension	2
Duration of extension (in years)	1 year

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