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Revenues (Tables) | 9 Months Ended
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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 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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