Fair Value Measurements - Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments (Details) - Level 3 [Member] - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Mar. 31, 2025	Sep. 30, 2024
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 229,412	$ 140,290
Senior Secured First Lien Term Loans [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 79,816	$ 65,236
Valuation Methodology	Income Approach	Income Approach
Unobservable Input	Market Yield	Market Yield
Range (Weighted Average)	3.5% - 18.25% (11.6%)	3.5% - 42.5% (15.3%)
Impact to Valuation From An Increase In Input	Decrease	Decrease
Senior Secured First Lien Term Loans One [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 1,434	$ 2,399
Valuation Methodology	Market Approach	Market Approach
Unobservable Input	EBITDA Multiple	EBITDA Multiple
Range (Weighted Average)	1.4x - 1.6x (1.5x)	1.8x - 2.3x (2.0x)
Impact to Valuation From An Increase In Input	Increase	Increase
Senior Secured First Lien Term Loans Two [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 997	$ 1,002
Valuation Methodology	Market Approach	Market Approach
Unobservable Input	Market Quote	Market Spread
Range (Weighted Average)		4.5% - 5.0% (4.75%)
Impact to Valuation From An Increase In Input		Decrease
Senior Secured First Lien Term Loans Three [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 13,592	$ 350
Valuation Methodology	Recent Purchase	Cost Approach
Unobservable Input	Purchase Price	Collateral Value
Range (Weighted Average)	N/A
Impact to Valuation From An Increase In Input	N/A
Senior Secured Notes [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 7,422	$ 7,422
Valuation Methodology	Cost Approach	Recent Purchase
Unobservable Input	Collateral Value	Purchase Price
Range (Weighted Average)
Impact to Valuation From An Increase In Input
Equity/Warrants [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 36,775	$ 36,683
Valuation Methodology	Cost Approach	Cost Approach
Unobservable Input	Replacement Cost	Collateral Value
Range (Weighted Average)
Impact to Valuation From An Increase In Input
Equity/Warrants One [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 81,778	$ 27,014
Valuation Methodology	Market Approach	Market Approach
Unobservable Input	EBITDA Multiple	EBITDA Multiple
Range (Weighted Average)	1.4x - 10.3x (8.3x)	4.3x - 10.3x (8.4x)
Impact to Valuation From An Increase In Input	Increase	Increase
Equity/Warrants Two [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 2,537	$ 101
Valuation Methodology	Income Approach	Recent Purchase
Unobservable Input	Market Yield	Purchase Price
Range (Weighted Average)	9.0%-28.8% (25.1%)
Impact to Valuation From An Increase In Input	Decrease
Equity/Warrants Three [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 3,375	$ 83
Valuation Methodology	Recent Purchase	Income Approach
Unobservable Input	Purchase Price	DLOM (Discount for lack of Marketability)
Range (Weighted Average)		27.0% - 31.0% (29.0%)
Impact to Valuation From An Increase In Input		Decrease
Equity/Warrants Four [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 1,686
Valuation Methodology	Income Approach
Unobservable Input	DLOM (Discount for lack of Marketability)
Range (Weighted Average)	39.0%-45.0% (42.0%)
Impact to Valuation From An Increase In Input	Decrease

Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]