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Fair Value Measurements (Details) - Schedule of Investments that Use Level 3 Inputs - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at beginning	$ 165,316	$ 146,675
Purchases and other adjustments to cost	14,512	7,182
Sales (including repayments or maturities)	(16,654)	(18,297)
Net realized gains/(losses) from investments	266	(34)
Net unrealized gains/(losses)	479	(185)
Transfer in/(out)
Balance at ending	163,919	135,341
Level 3 [Member] | Senior Secured First Lien Term Loans [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at beginning	82,499	74,252
Purchases and other adjustments to cost	7,760	2,900
Sales (including repayments or maturities)	(8,802)	(1,046)
Net realized gains/(losses) from investments	(12)	3
Net unrealized gains/(losses)	951	(1,448)
Transfer in/(out)
Balance at ending	82,396	74,661
Level 3 [Member] | Equities/ Warrants [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at beginning	82,817	69,816
Purchases and other adjustments to cost	6,752	4,282
Sales (including repayments or maturities)	(7,852)	(14,644)
Net realized gains/(losses) from investments	278
Net unrealized gains/(losses)	(472)	(391)
Transfer in/(out)
Balance at ending	$ 81,523	59,063
Level 3 [Member] | Senior Secured Second Lien Term Loans [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at beginning		2,607
Purchases and other adjustments to cost
Sales (including repayments or maturities)		(2,607)
Net realized gains/(losses) from investments		5
Net unrealized gains/(losses)		(5)
Transfer in/(out)
Level 3 [Member] | Senior Secured Notes [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at beginning
Purchases and other adjustments to cost
Sales (including repayments or maturities)
Net realized gains/(losses) from investments		(42)
Net unrealized gains/(losses)		1,659
Transfer in/(out)
Balance at ending		$ 1,617

X

- Definition

Amount of realized gain (loss) recognized in income for derivative asset (liability) after deduction of derivative liability (asset), measured at fair value using unobservable input (level 3) and still held.

+ References

No definition available.

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- Definition

Amount of unrealized gain (loss) recognized in income for derivative asset (liability) after deduction of derivative liability (asset), measured at fair value using unobservable input (level 3) and still held.

+ References

No definition available.

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- Definition

Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- Definition

Amount of sales of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- Definition

Amount of transfers of financial instrument classified as a liability into (out of) level 3 of the fair value hierarchy.

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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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-Section 50
-Paragraph 2
-Subparagraph (c)
-SubTopic 10
-Topic 820
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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