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
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)