Fair Value of Financial Instruments - Schedule of Financial Instruments Not Carried at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Carrying Value	$ 44,586
Carrying Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans held for investment	60,984	$ 56,221
Fair Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans held for investment	61,989	57,365
Secured financing facility | Carrying Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long-term debt	44,586	41,109
Secured financing facility | Fair Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long-term debt	45,471	41,793
Mortgages | Two Mortgage Notes Payable
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Carrying Value	90,739
Mortgages | Carrying Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long-term debt	136,168	45,149
Mortgages | Fair Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long-term debt	$ 137,076	$ 46,520