Investments - Summary of Other Equity Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Equity Method Investment	$ 58,590	$ 59,508
ABS [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment	40,977	41,439
Atalanta Sosnoff [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment	10,948	11,950
Luminis [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment	6,158	6,119
Seneca Evercore [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment	$ 507	$ 0