Revenue - Disaggregation of Revenue By Product (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Total revenues	$ 58,942	$ 49,996	$ 178,667	$ 140,015
Management and Advisory Fees
Disaggregation of Revenue [Line Items]
Total revenues	58,078	49,479	176,322	138,957
Subscriptions
Disaggregation of Revenue [Line Items]
Total revenues	128	165	385	493
Other Revenue
Disaggregation of Revenue [Line Items]
Total revenues	$ 736	$ 352	$ 1,960	$ 565