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Investments - Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Dec. 31, 2021
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Mar. 28, 2022
Jan. 31, 2022
Schedule of Investments [Line Items]            
Income from Equity Method Investments   $ 1,468 $ 2,512      
Net Realized and Unrealized Gains (Losses) on Private Equity Fund Investments   322 (83)      
Previously Received Carried Interest Subject to Repayment   400        
Total Assets   2,750,472 2,938,364 $ 3,620,923    
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount   5,480   5,385    
Equity Securities without Readily Determinable Fair Value, Amount   616   604    
Variable Interest Entity, Not Primary Beneficiary [Member]            
Schedule of Investments [Line Items]            
Total Assets   3,297   $ 3,166    
Equity Method Investments [Member]            
Schedule of Investments [Line Items]            
Amortization of Intangible Assets   $ 79 79      
ABS [Member]            
Schedule of Investments [Line Items]            
Equity Method Investment, Ownership Percentage   26.00%     26.00% 46.00%
Proceeds from Sale of Equity Method Investments     18,300      
Income from Equity Method Investments   $ 1,006 1,199      
ABS [Member] | Other Revenue, Including Interest and Investments            
Schedule of Investments [Line Items]            
Equity Method Investment, Realized Gain (Loss) on Disposal     1,294      
Atalanta Sosnoff [Member]            
Schedule of Investments [Line Items]            
Equity Method Investment, Ownership Percentage   49.00%        
Income from Equity Method Investments   $ 391 939      
Luminis [Member]            
Schedule of Investments [Line Items]            
Equity Method Investment, Ownership Percentage   20.00%        
Income from Equity Method Investments   $ 162 288      
Seneca Evercore [Member]            
Schedule of Investments [Line Items]            
Equity Method Investment, Ownership Percentage   20.00%        
Income from Equity Method Investments   $ (91) $ 86      
Trilantic VI [Member]            
Schedule of Investments [Line Items]            
Proceeds from Sale of Equity Method Investments $ 9,188