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RELATED PARTY TRANSACTIONS - Schedule of Related Party Transactions (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Related Party Transactions [Abstract] |  |  |  |  |
Base management fee |  | 1.75% | 1.75% | 1.75% | 1.75%
Average total assets subject to base management fee |  | $ 709,943 | $ 571,657 | $ 672,990 | $ 571,429
Multiplied by prorated annual base management fee of 1.75% |  | 0.4375% | 0.4375% | 1.3125% | 1.3125%
Base management fee | [1] | $ 3,106 | $ 2,501 | $ 8,833 | $ 7,500
Portfolio company fee credit |  | (1,894) | (1,099) | (2,987) | (3,027)
Syndicated loan fee credit |  | (32) | (35) | (95) | (136)
Net Base Management Fee |  | 1,180 | 1,367 | 5,751 | 4,337
Loan servicing fee | [1] | 2,069 | 1,614 | 5,866 | 4,596
Credits to base management fee – loan servicing fee |  | (2,069) | (1,614) | (5,866) | (4,596)
Net Loan Servicing Fee |  | 0 | 0 | 0 | 0
Incentive fee | [1] | 2,919 | 1,579 | 7,508 | 5,641
Incentive fee credit |  | 0 | (437) | 0 | (437)
Net Incentive Fee |  | 2,919 | 1,142 | 7,508 | 5,204
Credit to Fees From Adviser - other |  | $ (1,926) | $ (1,571) | $ (3,082) | $ (3,600)
[1] | Refer to Note 4—Related Party Transactions in the accompanying Notes to Consolidated Financial Statements for additional information.

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