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, 2026	Sep. 30, 2025
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 245,565	$ 224,187
Senior Secured First Lien Term Loans [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 79,635	$ 74,485
Valuation Methodology	Income Approach	Income Approach
Unobservable Input	Market Yield	Market Yield
Range (Weighted Average)	5.0% - 19.2% (12.3%)	3.3% - 14.5% (10.0%)
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	$ 11,027	$ 13,428
Valuation Methodology	Market Approach	Market Approach
Unobservable Input	EBITDA Multiple	EBITDA Multiple
Range (Weighted Average)	3.1x - 5.5x (3.6x)	1.8x - 2.8x (2.3x)
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	$ 7,535	$ 997
Valuation Methodology	Recent Transaction	Market Approach
Unobservable Input	Purchase Price	Market Spread
Range (Weighted Average)	N/A	4.8% - 5.5% (5.1%)
Impact to Valuation From An Increase In Input	N/A	Increase
Senior Secured Notes [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 6,997	$ 6,997
Valuation Methodology	Cost Approach	Cost Approach
Unobservable Input	Collateral Value	Collateral Value
Range (Weighted Average)	N/A	N/A
Impact to Valuation From An Increase In Input	N/A	N/A
Equity/Warrants [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 58,416	$ 78,255
Valuation Methodology	Market Approach	Market Approach
Unobservable Input	Price/TBV Multiple	EBITDA Multiple
Range (Weighted Average)	1.1x -2x (1.7x)	1.3x - 13.0x (11.0x)
Impact to Valuation From An Increase In Input	Increase	Increase
Equity/Warrants One [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 35,309	$ 37,181
Valuation Methodology	Cost Approach	Cost Approach
Unobservable Input	Replacement Cost	Replacement Cost
Range (Weighted Average)	N/A	N/A
Impact to Valuation From An Increase In Input	N/A	N/A
Equity/Warrants Two [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 32,665	$ 3,948
Valuation Methodology	Market Approach	Market Approach
Unobservable Input	EBITDA Multiple	Market Quote
Range (Weighted Average)	3.1x - 11.0x (8.8x)	N/A
Impact to Valuation From An Increase In Input	Increase	N/A
Equity/Warrants Three [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 7,255	$ 6,000
Valuation Methodology	Income Approach	Market Approach
Unobservable Input	Market Yield	Revenue Multiple
Range (Weighted Average)	7.5% - 16.5% (12.3%)	2.5x-3.0x (2.8x)
Impact to Valuation From An Increase In Input	Decrease	Increase
Equity/Warrants Four [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 6,626	$ 2,725
Valuation Methodology	Market Approach	Income Approach
Unobservable Input	Revenue Multiple	Market Yield
Range (Weighted Average)	3.3x - 4.3x (3.8x)	28.3% - 28.8% (28.5%)
Impact to Valuation From An Increase In Input	Increase	Decrease
Equity/Warrants Five [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 100	$ 100
Valuation Methodology	Cost Approach	Cost Approach
Unobservable Input	Collateral Value	Collateral Value
Range (Weighted Average)	N/A	N/A
Impact to Valuation From An Increase In Input	N/A	N/A
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		$ 71
Valuation Methodology		Recent Transaction
Unobservable Input		Purchase Price
Range (Weighted Average)		N/A
Impact to Valuation From An Increase In Input		N/A