Revenues (Tables)

12 Months Ended

Dec. 31, 2022

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table summarizes investment management fees by source:

	Years Ended December 31,
(in thousands)	2022		2021		2020
Investment management fees
Open-end funds	$	335,585	$	395,152	$	250,030
Closed-end funds	63,841		63,301		36,833
Retail separate accounts	171,509		174,919		104,932
Institutional accounts	157,404		148,213		113,543
Total investment management fees	$	728,339	$	781,585	$	505,338