AFFILIATE TRANSACTIONS - Management fees, incentive allocation and capital gains (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Related Party Transaction [Line Items]
Management fees and incentive allocation to affiliate	$ 3,554	$ 5,563	$ 8,449	$ 8,560
General Partner
Related Party Transaction [Line Items]
Management fees and incentive allocation to affiliate	3,553	5,563	8,448	8,560
Management fees | General Partner
Related Party Transaction [Line Items]
Management fees and incentive allocation to affiliate	405	239	992	294
Income incentive allocation | General Partner
Related Party Transaction [Line Items]
Management fees and incentive allocation to affiliate	$ 3,148	$ 5,324	$ 7,456	$ 8,266