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Investments - Investment Income, Realized and Unrealized Gains and Losses on Investments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
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Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2022 | Sep. 30, 2022 | Dec. 31, 2022 | Dec. 31, 2021
Investments |  |  |  |  |  |  |  |
Investment income, net of investment expenses |  |  |  |  |  |  | $ 1,544 | $ 768
Realized gains on investments |  |  |  |  |  |  | 22 | 62
Realized losses on investments |  |  |  |  |  |  | (392) | (129)
Investment income and realized gains, net of investment expenses | $ 399 | $ 335 | $ 243 | $ 197 | $ 440 | $ 775 | $ 1,174 | $ 701

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- Definition Amount of non operating investment income and realized gains. + References No definition available. + Details
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- Definition Amount of realized gain on investment. + References No definition available. + Details
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- Definition Amount of realized loss on investment. + References No definition available. + Details
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- Definition Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(a),(b)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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- References No definition available. + Details
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