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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

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- 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. + Details
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