INVESTMENT SECURITIES - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Total long-term investments	$ 46,789,000		$ 46,789,000		$ 46,760,000
Cash distributions received			4,750,000	$ 0
In-transit redemptions	151,000		151,000
Equity securities and other long-term investments at cost	7,555,000		7,555,000		$ 7,555,000
Impairment and other adjustments	$ 0	$ 0	$ 0	$ 0
Minimum | Mutual Fund And Hedge Funds
Schedule of Equity Method Investments [Line Items]
Equity-method ownership percentage	8.13%		8.13%
Maximum | Mutual Fund And Hedge Funds
Schedule of Equity Method Investments [Line Items]
Equity-method ownership percentage	35.89%		35.89%
Quoted Prices in Active Markets for Identical Assets (Level 1)
Schedule of Equity Method Investments [Line Items]
Total long-term investments	$ 303,000		$ 303,000