REVENUES - Revenues Disaggregated by Fund Structure (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 59,401	$ 63,030
Management Fees
Disaggregation of Revenue [Line Items]
Revenues	0	60,431
Closed-end
Disaggregation of Revenue [Line Items]
Revenues	0	1,382
Open-end
Disaggregation of Revenue [Line Items]
Revenues	0	1,370
Sub-advisory fees
Disaggregation of Revenue [Line Items]
Revenues	0	57,679
Incentive Income
Disaggregation of Revenue [Line Items]
Revenues	59,401	2,599
Closed-end
Disaggregation of Revenue [Line Items]
Revenues	59,099	2,255
Evergreen
Disaggregation of Revenue [Line Items]
Revenues	$ 302	$ 344