Revenues (Tables)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table summarizes investment management fees by source:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2021		2020		2021		2020
Investment management fees
Open-end funds	$	99,278	$	63,458	$	284,945	$	176,584
Closed-end funds	17,116		8,959		46,451		27,695
Retail separate accounts	46,625		26,412		126,612		74,524
Institutional accounts	36,728		29,048		104,948		76,571
Structured products	953		1,297		3,797		3,288
Other products	433		611		1,159		1,961
Total investment management fees	$	201,133	$	129,785	$	567,912	$	360,623