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Investments - Investment Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Net Investment Income |  |  |  |
Investment income | $ 3,743 | $ 6,315 | $ 11,587 | $ 19,670
Investment expenses | (272) | (305) | (850) | (836)
Net investment income | 3,471 | 6,010 | 10,737 | 18,834
Fixed Maturities |  |  |  |
Net Investment Income |  |  |  |
Investment income | 3,091 | 5,744 | 10,113 | 16,806
Equity Securities |  |  |  |
Net Investment Income |  |  |  |
Investment income | 184 | 467 | 512 | 1,966
Cash and cash equivalents |  |  |  |
Net Investment Income |  |  |  |
Investment income | 2 | 30 | 99 | 767
Other Investments |  |  |  |
Net Investment Income |  |  |  |
Investment income | 558 | 62 | 843 | 17
Other Assets |  |  |  |
Net Investment Income |  |  |  |
Investment income | $ (92) | $ 12 | $ 20 | $ 114

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