ASSET MANAGEMENT REVENUES - Schedule of Unearned Income and Fees (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Total unearned income and fees	$ 38,993	$ 37,468
Genesis
Disaggregation of Revenue [Line Items]
Total unearned income and fees	38,993	37,468
Genesis | Management fees
Disaggregation of Revenue [Line Items]
Total unearned income and fees	1	1
Genesis | Incentive income
Disaggregation of Revenue [Line Items]
Total unearned income and fees	$ 38,992	$ 37,467