XML 63 R50.htm IDEA: XBRL DOCUMENT v3.21.2
Investments - Summary of Other Equity Investments (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]    
Equity Method Investment $ 54,361 $ 59,508
ABS [Member]    
Schedule of Equity Method Investments [Line Items]    
Equity Method Investment 36,874 41,439
Atalanta Sosnoff [Member]    
Schedule of Equity Method Investments [Line Items]    
Equity Method Investment 11,631 11,950
Luminis [Member]    
Schedule of Equity Method Investments [Line Items]    
Equity Method Investment $ 5,856 $ 6,119