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Revenues (Tables) | 3 Months Ended
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Mar. 31, 2025
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregation of Revenue | The following table summarizes investment management fees by source:
| Three Months Ended March 31, |  |
(in thousands) | 2025 |  | 2024 |  |  |  |
Investment management fees |  |  |  |  |  |  |
Open-end funds | $ | 74,037 |  |  | $ | 78,680 |  |  |  |  |
Closed-end funds | 14,853 |  |  | 14,394 |  |  |  |  |
Retail separate accounts | 54,272 |  |  | 48,981 |  |  |  |  |
Institutional accounts | 42,929 |  |  | 46,305 |  |  |  |  |
Total investment management fees | $ | 186,091 |  |  | $ | 188,360 |  |  |  |  |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
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