ORGANIZATION, BUSINESS AND BASIS OF PRESENTATION (Details) - USD ($)				3 Months Ended		9 Months Ended		12 Months Ended	16 Months Ended	19 Months Ended
	Feb. 23, 2023	Feb. 25, 2022	Dec. 23, 2020	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	May 05, 2022	Sep. 30, 2023
Schedule of Equity Method Investments [Line Items]
Share repurchase program term	12 months					12 months
Purchases of shares in repurchase plan					$ 8,509,000	$ 10,854,000	$ 23,622,000
Sierra Merger
Schedule of Equity Method Investments [Line Items]
Shares of common stock repurchased (in shares)				0		1,400,000
Shares of common stock repurchased, average price (in dollars per share)						$ 7.75
Common Stock
Schedule of Equity Method Investments [Line Items]
Common stock aggregate amount	$ 30,000,000	$ 30,000,000
Common stock market price percent of NAV, threshold		90.00%
Shares of common stock repurchased (in shares)					903,787	1,400,000	2,420,906
Purchases of shares in repurchase plan					$ 1,000	$ 1,000	$ 2,000
Common Stock \| MVC
Schedule of Equity Method Investments [Line Items]
Common stock aggregate amount			$ 15,000,000
Common stock market price percent of NAV, threshold			90.00%
Shares of common stock repurchased (in shares)									207,677
Shares of common stock repurchased, average price (in dollars per share)									$ 10.14
Common Stock \| Sierra Merger
Schedule of Equity Method Investments [Line Items]
Common stock aggregate amount		$ 30,000,000
Common stock market price percent of NAV, threshold		90.00%
Shares of common stock repurchased (in shares)										3,179,168
Shares of common stock repurchased, average price (in dollars per share)										$ 9.44
Purchases of shares in repurchase plan								$ 30,000,000