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Fair Value Measurements (Details) - Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments - Level 3 [Member] - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 | Sep. 30, 2023
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 141,385 | $ 165,316
Senior Secured First Lien Term Loans [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 59,588 | $ 69,943
Valuation Methodology | Income Approach | Income Approach
Unobservable Input | Market Yield | Market Yield
Range (Weighted Average) | 42.50% | 32.00%
Impact to Valuation From An Increase In Input | Decrease | Decrease
Senior Secured First Lien Term Loans [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 7,062 | $ 751
Valuation Methodology | Recent Purchase | Market Approach
Unobservable Input | Purchase Price | Revenue Multiple
Range (Weighted Average) |  | 0.30%
Impact to Valuation From An Increase In Input |  | Increase
Senior Secured First Lien Term Loans [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 4,245 | $ 10,939
Valuation Methodology | Market Approach | Market Approach
Unobservable Input | EBITDA Multiple | EBITDA Multiple
Range (Weighted Average) | 8.30% | 5.00%
Impact to Valuation From An Increase In Input | Increase | Increase
Senior Secured First Lien Term Loans [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 350 | $ 866
Valuation Methodology | Cost Approach | Market Approach
Unobservable Input | Collateral Value | LTM EBITDA Multiple
Range (Weighted Average) |  | 6.80%
Impact to Valuation From An Increase In Input |  | Increase
Senior Secured Notes [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 10,422 |
Valuation Methodology | Recent Purchase |
Unobservable Input | Purchase Price |
Range (Weighted Average) |  |
Impact to Valuation From An Increase In Input |  |
Equity/Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 34,708 | $ 38,870
Valuation Methodology | Cost Approach | Cost Approach
Unobservable Input | Collateral Value | Collateral Value
Range (Weighted Average) |  |
Impact to Valuation From An Increase In Input |  |
Equity/Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 24,812 | $ 22,007
Valuation Methodology | Market Approach | Market Approach
Unobservable Input | EBITDA Multiple | EBITDA Multiple
Range (Weighted Average) | 10.80% | 36.80%
Impact to Valuation From An Increase In Input | Increase | Increase
Equity/Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 100 | $ 206
Valuation Methodology | Recent Purchase | Income Approach
Unobservable Input | Purchase Price | DLOM (Discount for lack of Marketability)
Range (Weighted Average) |  | 3.20%
Impact to Valuation From An Increase In Input |  | Decrease
Equity/Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value | $ 98 | $ 10,000
Valuation Methodology | Income Approach | Recent Purchase
Unobservable Input | DLOM (Discount for lack of Marketability) | Purchase Price
Range (Weighted Average) | 31.00% |
Impact to Valuation From An Increase In Input | Decrease |
Equity/Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair Value |  | $ 11,734
Valuation Methodology |  | Market Approach
Unobservable Input |  | LTM Multiple
Range (Weighted Average) |  | 6.80%
Impact to Valuation From An Increase In Input |  | Increase
Minimum [Member] | Senior Secured First Lien Term Loans [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) | 3.30% | 8.50%
Minimum [Member] | Senior Secured First Lien Term Loans [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) |  | 0.30%
Minimum [Member] | Senior Secured First Lien Term Loans [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) | 3.30% | 1.70%
Minimum [Member] | Senior Secured First Lien Term Loans [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) |  | 5.80%
Minimum [Member] | Equity/Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) | 1.00% | 1.80%
Minimum [Member] | Equity/Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) |  | 3.00%
Minimum [Member] | Equity/Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) | 26.00% |
Minimum [Member] | Equity/Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) |  | 5.80%
Maximum [Member] | Senior Secured First Lien Term Loans [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) | (16.90%) | (13.78%)
Maximum [Member] | Senior Secured First Lien Term Loans [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) |  | 0.30%
Maximum [Member] | Senior Secured First Lien Term Loans [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) | 4.70% | 3.10%
Maximum [Member] | Senior Secured First Lien Term Loans [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) |  | 6.30%
Maximum [Member] | Equity/Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) | 8.70% | 2.80%
Maximum [Member] | Equity/Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) |  | 3.10%
Maximum [Member] | Equity/Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) | (28.50%) |
Maximum [Member] | Equity/Warrants [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Range (Weighted Average) |  | 6.30%

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