Investments - Additional Information (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 31, 2024	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Schedule of Investments [Line Items]
Income (Loss) from Equity Method Investments		$ 1,857	$ 1,542	$ 4,182	$ 3,010
Net Realized and Unrealized Gains (Losses) on Private Equity Fund Investments		(174)	318	(101)	640
Previously Received Carried Interest Subject to Repayment		60		60
Total Assets		3,315,998	3,051,444	3,315,998	3,051,444	$ 3,703,298
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount		5,684		5,684		5,762
Equity Securities without Readily Determinable Fair Value, Amount		632		632		636
Variable Interest Entity, Not Primary Beneficiary [Member]
Schedule of Investments [Line Items]
Total Assets		3,502		3,502		$ 3,580
Equity Method Investments [Member]
Schedule of Investments [Line Items]
Amortization of Intangible Assets		$ 79	79	$ 158	158
ABS [Member]
Schedule of Investments [Line Items]
Equity Method Investment, Ownership Percentage		26.00%		26.00%
Income (Loss) from Equity Method Investments		$ 1,029	1,064	$ 2,031	2,070
ABS [Member] | Subsequent Event [Member]
Schedule of Investments [Line Items]
Proceeds from Sale of Equity Method Investments	$ 18,113
Atalanta Sosnoff [Member]
Schedule of Investments [Line Items]
Equity Method Investment, Ownership Percentage		49.00%		49.00%
Income (Loss) from Equity Method Investments		$ 681	335	$ 1,316	726
Luminis [Member]
Schedule of Investments [Line Items]
Equity Method Investment, Ownership Percentage		20.00%		20.00%
Income (Loss) from Equity Method Investments		$ 137	135	$ 705	297
Seneca Evercore [Member]
Schedule of Investments [Line Items]
Equity Method Investment, Ownership Percentage		20.00%		20.00%
Income (Loss) from Equity Method Investments		$ 10	$ 8	$ 130	$ (83)