BORROWINGS - Schedule of Line of Credit Facilities (Details) - USD ($) |
3 Months Ended | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Sep. 30, 2022 |
May 13, 2022 |
May 12, 2022 |
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| Debt Instrument [Line Items] | |||||||||||||||
| Line of credit outstanding, at cost | $ 108,400,000 | $ 141,800,000 | |||||||||||||
| Availability | [1],[2],[3],[4],[5] | 4,000,000 | |||||||||||||
| Credit Facility | Revolving Line of Credit | Line of Credit | |||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||
| Commitment amount | 245,000,000 | 225,000,000 | $ 175,000,000 | $ 205,000,000 | |||||||||||
| Line of credit outstanding, at cost | 108,400,000 | 141,800,000 | |||||||||||||
| Availability | 111,868,000 | $ 60,068,000 | |||||||||||||
| Weighted average borrowings outstanding, at cost | $ 129,062,000 | $ 32,967,000 | |||||||||||||
| Weighted average interest rate | 6.90% | 7.50% | |||||||||||||
| Commitment (unused) fees incurred | $ 156,000 | $ 335,000 | |||||||||||||
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