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v3.23.3

SUBSEQUENT EVENTS - Narrative (Details) - USD ($) $ in Thousands |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 30, 2023 | Apr. 10, 2023 | Mar. 08, 2021 | Oct. 31, 2023 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Mar. 31, 2023 | Oct. 29, 2023
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase of investments |  |  |  |  |  |  | $ 114,788 | $ 102,046 |  |  |
Cost |  |  |  |  | $ 834,798 |  | 834,798 |  | $ 720,630 | [1] |
Success fee income |  |  |  |  | 0 | $ 1,733 | 0 | 6,733 |  |  |
Principal repayments of investments |  |  |  |  |  |  | $ 0 | $ 48,000 |  |  |
Revolving Line of Credit | Line of Credit |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unused fee percentage |  |  |  |  |  |  |  |  | 1.00% |  |
Credit Facility |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Term |  |  | 2 years |  |  |  |  |  |  |  |
Credit Facility | Line of Credit |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unused fee percentage |  |  |  |  |  |  | 0.75% |  |  |  |
Credit Facility | Revolving Line of Credit | Line of Credit |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Commitment amount |  |  |  |  | $ 180,000 |  | $ 180,000 |  | $ 180,000 |  |
Credit Facility | Revolving Line of Credit | Line of Credit | Less than or Equal to 50% of Commitment |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unused fee percentage |  |  |  |  |  |  | 0.50% |  |  |  |
Credit Facility | Revolving Line of Credit | Line of Credit | Greater Than 50% But Less Than or Equal to 65% of Commitment |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unused fee percentage |  |  |  |  |  |  | 0.75% |  |  |  |
Credit Facility | Revolving Line of Credit | Line of Credit | Greater Than 65% Of Commitment |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unused fee percentage |  |  |  |  |  |  | 1.00% |  |  |  |
Credit Facility | Revolving Line of Credit | Line of Credit | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, variable rate floor |  |  |  |  |  |  | 0.35% |  | 0.50% |  |
Debt instrument, basis spread on variable rate |  | 0.11% |  |  |  |  | 3.25% |  |  |  |
Credit Facility | Revolving Line of Credit | Line of Credit | SOFR, Tranche One |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  |  |  | 2.85% |  |  |  |
Credit Facility | Revolving Line of Credit | Line of Credit | SOFR, Tranche Two |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  |  |  | 3.10% |  |  |  |
Credit Facility | Revolving Line of Credit | Line of Credit | SOFR, Thereafter |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  |  |  | 3.35% |  |  |  |
Credit Facility | Revolving Line of Credit | Line of Credit | SOFR, Thereafter, Adjustment |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  |  |  | 0.11% |  |  |  |
Subsequent Event | Credit Facility |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Term | 2 years |  |  |  |  |  |  |  |  |  |
Subsequent Event | Credit Facility | Revolving Line of Credit | Line of Credit |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Commitment amount | $ 135,000 |  |  |  |  |  |  |  |  |  | $ 180,000
Subsequent Event | Credit Facility | Revolving Line of Credit | Line of Credit | Less than or Equal to 50% of Commitment |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unused fee percentage | 0.50% |  |  |  |  |  |  |  |  |  |
Subsequent Event | Credit Facility | Revolving Line of Credit | Line of Credit | Greater Than 50% But Less Than or Equal to 65% of Commitment |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unused fee percentage | 0.75% |  |  |  |  |  |  |  |  |  |
Subsequent Event | Credit Facility | Revolving Line of Credit | Line of Credit | Greater Than 65% Of Commitment |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unused fee percentage | 1.00% |  |  |  |  |  |  |  |  |  |
Subsequent Event | Credit Facility | Revolving Line of Credit | Line of Credit | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, variable rate floor | 0.35% |  |  |  |  |  |  |  |  |  |
Subsequent Event | Credit Facility | Revolving Line of Credit | Line of Credit | SOFR, Tranche One |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 3.15% |  |  |  |  |  |  |  |  |  |
Subsequent Event | Credit Facility | Revolving Line of Credit | Line of Credit | SOFR, Tranche Two |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 3.40% |  |  |  |  |  |  |  |  |  |
Subsequent Event | Credit Facility | Revolving Line of Credit | Line of Credit | SOFR, Thereafter |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 3.65% |  |  |  |  |  |  |  |  |  |
Subsequent Event | Credit Facility | Revolving Line of Credit | Line of Credit | SOFR, Thereafter, Adjustment |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate | 0.10% |  |  |  |  |  |  |  |  |  |
Subsequent Event | SFEG Holdings, Inc |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase of investments |  |  |  | $ 64,700 |  |  |  |  |  |  |
Cost |  |  |  | 4,800 |  |  |  |  |  |  |
Subsequent Event | Counsel Press, Inc., |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |
Success fee income |  |  |  | 1,400 |  |  |  |  |  |  |
Realized gain on preferred equity |  |  |  | 43,500 |  |  |  |  |  |  |
Principal repayments of investments |  |  |  | $ 27,500 |  |  |  |  |  |  |
[1] | Cumulative gross unrealized appreciation for federal income tax purposes is $150.4 million; cumulative gross unrealized depreciation for federal income tax purposes is $119.3 million. Cumulative net unrealized appreciation is $31.1 million, based on a tax cost of $722.4 million.

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