Revenues (Tables)

9 Months Ended

Sep. 30, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table summarizes revenue by source:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
($ in thousands)
Investment management fees
Open-end funds	$	59,060	$	62,466	$	169,326	$	174,032
Closed-end funds	10,846		10,614		31,485		31,161
Retail separate accounts	22,092		19,532		60,761		53,152
Institutional accounts	25,180		24,614		71,013		56,210
Structured products	1,725		3,602		4,957		7,996
Other products	1,120		885		2,990		2,806
Total investment management fees	120,023		121,713		340,532		325,357
Distribution and service fees	10,442		13,730		31,122		39,886
Administration and shareholder service fees	15,280		16,567		44,747		48,272
Other income and fees	210		200		761		655
Total revenues	$	145,955	$	152,210	$	417,162	$	414,170