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Investments, Summary of Realized Investment Gains (Losses) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Summary of realized investment gains (losses) [Abstract] |  |
Gains | $ 1,385 | $ 370
Losses | 0 | 0
Realized investment gains (losses), net | 1,385 | 370
Fixed Maturities [Member] |  |
Summary of realized investment gains (losses) [Abstract] |  |
Gains | 272 | 370
Losses | 0 | 0
Realized investment gains (losses), net | 272 | 370
Equity Securities [Member] |  |
Summary of realized investment gains (losses) [Abstract] |  |
Gains | 1,113 | 0
Losses | 0 | 0
Realized investment gains (losses), net | 1,113 | 0
Other Invested Assets [Member] |  |
Summary of realized investment gains (losses) [Abstract] |  |
Gains | 0 | 0
Losses | 0 | 0
Realized investment gains (losses), net | $ 0 | $ 0

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- Definition Gains realized on investments. + References No definition available. + Details
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- Definition Losses realized on investments. + References No definition available. + Details
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- Definition The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.3(a)) -URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263 + Details
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