Fair Value Measurements - Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments (Details) - Level 3 [Member] - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Jun. 30, 2025	Sep. 30, 2024
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 220,324	$ 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	$ 74,570	$ 65,236
Valuation Methodology	Income Approach	Income Approach
Unobservable Input	Market Yield	Market Yield
Range (Weighted Average)	3.5% - 14.25% (11.2%)	3.5% - 42.5% (15.3%)
Impact to Valuation From An Increase In Input	Decrease	Decrease
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	$ 1,000	$ 1,002
Valuation Methodology	Market Approach	Market Approach
Unobservable Input	Market Spread	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	$ 14,691	$ 350
Valuation Methodology	Market Approach	Cost Approach
Unobservable Input	EBITDA Multiple	Collateral Value
Range (Weighted Average)	2.0x – 3.0x (2.5x)
Impact to Valuation From An Increase In Input	Increase
Senior Secured First Lien Term Loans Four [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 42
Valuation Methodology	Recent Purchase
Unobservable Input	Purchase Price
Range (Weighted Average)
Impact to Valuation From An Increase In Input
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	$ 77,502	$ 36,683
Valuation Methodology	Market Approach	Cost Approach
Unobservable Input	EBITDA Multiple	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	$ 36,245	$ 27,014
Valuation Methodology	Cost Approach	Market Approach
Unobservable Input	Replacement Cost	EBITDA Multiple
Range (Weighted Average)		4.3x - 10.3x (8.4x)
Impact to Valuation From An Increase In Input		Increase
Equity/Warrants Two [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 6,000	$ 101
Valuation Methodology	Market Approach	Recent Purchase
Unobservable Input	Revenue Multiple	Purchase Price
Range (Weighted Average)	2.5x-3.0x (2.8x)
Impact to Valuation From An Increase In Input	Increase
Equity/Warrants Three [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 2,751	$ 83
Valuation Methodology	Income Approach	Income Approach
Unobservable Input	Market Yield	DLOM (Discount for lack of Marketability)
Range (Weighted Average)	11.0%-28.8% (25.1%)	27.0% - 31.0% (29.0%)
Impact to Valuation From An Increase In Input	Decrease	Decrease
Equity/Warrants Four [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 101
Valuation Methodology	Cost Approach
Unobservable Input	Collateral Value
Range (Weighted Average)
Impact to Valuation From An Increase In Input
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		$ 2,399
Valuation Methodology		Market Approach
Unobservable Input		EBITDA Multiple
Range (Weighted Average)		1.8x - 2.3x (2.0x)
Impact to Valuation From An Increase In Input		Increase