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v3.23.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 USD ($) loan investment | Mar. 31, 2022 USD ($) | Mar. 31, 2023 USD ($) loan investment | Mar. 31, 2022 USD ($) | Sep. 30, 2022 USD ($) investment loan
Summary of Investment Holdings [Line Items] |  |  |  |  |
Cost | $ 696,031,000 |  | $ 696,031,000 |  | $ 656,053,000
Fair Value | 678,759,000 |  | 678,759,000 |  | 649,615,000
Total interest income (excluding PIK interest income) | 18,803,000 | $ 12,048,000 | 36,172,000 | $ 23,777,000 |
PIK interest income | 775,000 | 914,000 | 1,773,000 | 2,051,000 |
OID |  |  |  |  |
Summary of Investment Holdings [Line Items] |  |  |  |  |
Fair Value | $ 800,000 |  | $ 800,000 |  | $ 900,000
Number of loans | loan | 4 |  | 4 |  | 4
Total interest income (excluding PIK interest income) | $ 59,000 | 87,000 | $ 100,000 | 200,000 |
PIK |  |  |  |  |
Summary of Investment Holdings [Line Items] |  |  |  |  |
Number of investments | investment | 7 |  | 7 |  | 6
Proceeds from interest received | $ 0 | $ 2,400,000 | $ 400,000 | $ 2,400,000 |
Edge Adhesives Holdings, Inc. |  |  |  |  |
Summary of Investment Holdings [Line Items] |  |  |  |  |
Cost | $ 6,100,000 |  | $ 6,100,000 |  | $ 0
Cost percentage | 1.00% |  | 1.00% |  |
Fair Value | $ 2,800,000 |  | $ 2,800,000 |  | $ 0
Fair value percentage | 0.50% |  | 0.50% |  |

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