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Investments - Investment Income (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Net Investment Income |  |  |
Net investment income | $ 25,489 | $ 31,229 | $ 27,201
Investment expenses | (1,364) | (1,084) | (1,031)
Net Investment Income | 24,125 | 30,145 | 26,170
Fixed Maturities |  |  |
Net Investment Income |  |  |
Net investment income | 21,789 | 23,267 | 22,043
Equity Securities |  |  |
Net Investment Income |  |  |
Net investment income | 2,155 | 2,474 | 2,206
Cash, Cash Equivalents And Short-Term Investments |  |  |
Net Investment Income |  |  |
Net investment income | 1,329 | 4,118 | 1,953
Other Investments |  |  |
Net Investment Income |  |  |
Net investment income | 38 | 1,253 | 942
Other Assets |  |  |
Net Investment Income |  |  |
Net investment income | $ 178 | $ 117 | $ 57

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- Definition Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(2)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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