DISTRIBUTIONS TO COMMON STOCKHOLDERS - Adjustments for Book-tax Differences to Reflect Tax Character (Details) - USD ($) $ in Thousands  | 
3 Months Ended | 12 Months Ended | 
|---|---|---|
Dec. 31, 2022  | 
Sep. 30, 2022  | 
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| Equity [Abstract] | ||
| Undistributed net investment income | $ 271 | $ (5,606) | 
| Accumulated net realized losses | (271) | 7,013 | 
| Capital in excess of par value | $ 0 | $ (1,407) | 
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- Definition Additional Paid in Capital Adjustments No definition available. 
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- Definition Investment Company, Accumulated Net Realized Gain (Loss) In Excess Of Distributions Adjustments No definition available. 
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- Definition Investment Company, Distributable Earnings (Loss), Accumulated Ordinary Income (Loss) Adjustments No definition available. 
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- References No definition available. 
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