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Revenues | 12 Months Ended
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Dec. 31, 2019
Revenue from Contract with Customer [Abstract] |
Revenues | Revenues Revenue Disaggregated by Source The following table summarizes revenue by source:
| Years Ended December 31,
(in thousands) | 2019 |  | 2018 |  | 2017 (1)
Investment management fees |  |  |  |  |
Open-end funds | $ | 229,637 |  |  | $ | 231,175 |  |  | $ | 175,260 |
Closed-end funds | 42,199 |  |  | 41,455 |  |  | 44,687 |
Retail separate accounts | 82,999 |  |  | 73,532 |  |  | 54,252 |
Institutional accounts | 96,429 |  |  | 77,711 |  |  | 46,600 |
Structured products | 6,381 |  |  | 9,622 |  |  | 6,302 |
Other products | 3,832 |  |  | 3,526 |  |  | 3,974 |
Total investment management fees | 461,477 |  |  | 437,021 |  |  | 331,075 |
Distribution and service fees | 40,898 |  |  | 50,715 |  |  | 44,322 |
Administration and shareholder service fees | 59,884 |  |  | 63,614 |  |  | 48,996 |
Other income and fees | 987 |  |  | 885 |  |  | 1,214 |
Total revenues | $ | 563,246 |  |  | $ | 552,235 |  |  | $ | 425,607 |
(1) Prior period amounts have not been adjusted and are reported in accordance with historical accounting under ASC 605, Revenue Recognition.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 + Details
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