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, 2026	Sep. 30, 2025
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 240,658	$ 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	$ 85,193	$ 74,485
Valuation Methodology	Income Approach	Income Approach
Unobservable Input	Market Yield	Market Yield
Range (Weighted Average)	4.5% - 21.0% (11.3%)	3.3% - 14.5% (10.0%)
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	$ 9,742	$ 997
Valuation Methodology	Market Approach	Market Approach
Unobservable Input	EBITDA Multiple	Market Spread
Range (Weighted Average)	2.8x - 3.8x (3.3x)	4.8% - 5.5% (5.1%)
Impact to Valuation From An Increase In Input	Increase	Increase
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	$ 71
Valuation Methodology	Recent Transaction	Recent Transaction
Unobservable Input	Purchase Price	Purchase Price
Range (Weighted Average)	N/A	N/A
Impact to Valuation From An Increase In Input	N/A	N/A
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	$ 85,199	$ 78,255
Valuation Methodology	Market Approach	Market Approach
Unobservable Input	EBITDA Multiple	EBITDA Multiple
Range (Weighted Average)	1.1x - 14.0x (4.5x)	1.3x - 13.0x (11.0x)
Impact to Valuation From An Increase In Input	Increase	Increase
Equity/Warrants Five [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value	$ 36,796	$ 100
Valuation Methodology	Cost Approach	Cost Approach
Unobservable Input	Replacement Cost	Collateral Value
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	$ 6,655	$ 3,948
Valuation Methodology	Market Approach	Market Approach
Unobservable Input	Revenue Multiple	Market Quote
Range (Weighted Average)	4.0x-5.0x (4.5x)	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	$ 9,905	$ 6,000
Valuation Methodology	Income Approach	Market Approach
Unobservable Input	Market Yield	Revenue Multiple
Range (Weighted Average)	7.6%-28.8% (16.5%)	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	$ 100	$ 2,725
Valuation Methodology	Cost Approach	Income Approach
Unobservable Input	Collateral Value	Market Yield
Range (Weighted Average)	N/A	28.3% - 28.8% (28.5%)
Impact to Valuation From An Increase In Input	N/A	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		$ 13,428
Valuation Methodology		Market Approach
Unobservable Input		EBITDA Multiple
Range (Weighted Average)		1.8x - 2.8x (2.3x)
Impact to Valuation From An Increase In Input		Increase
Equity/Warrants One [Member]
Schedule of Quantitative Information About Level 3 Fair Value Measurements of Our Investments [Line Items]
Fair Value		$ 37,181
Valuation Methodology		Cost Approach
Unobservable Input		Replacement Cost
Range (Weighted Average)		N/A
Impact to Valuation From An Increase In Input		N/A