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Investments in Securities and Fair Value Investments in Securities (Schedule of Gross Unrealized Gains and Losses and Amortized Cost for Securities) (Details) $ in Thousands | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
--- | --- | ---
Debt and Equity Securities, FV-NI [Line Items] |  |
Total, amortized cost | $ 53,775 | $ 75,511
Fixed maturity securities, available-for-sale, at fair value | 53,989 | 79,791
Government obligations |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Total, amortized cost | 4,329 | 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 7 | 0
Fixed maturity securities, available-for-sale, at fair value | 4,322 | 0
General obligations of U.S. states, territories and political subdivisions |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Total, amortized cost | 8,561 | 16,669
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 21 | 922
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 36 | 0
Fixed maturity securities, available-for-sale, at fair value | 8,546 | 17,591
Special revenue issuer obligations of U.S. states, territories and political subdivisions |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Total, amortized cost | 30,123 | 41,753
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 106 | 2,453
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 219 | 2
Fixed maturity securities, available-for-sale, at fair value | $ 30,010 | $ 44,204
Number of Special Revenue Bonds | 40 | 40
Corporate debt securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Total, amortized cost | $ 10,762 | $ 17,089
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 417 | 955
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 68 | 48
Fixed maturity securities, available-for-sale, at fair value | 11,111 | 17,996
Total fixed maturity securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Total, amortized cost | 53,775 | 75,511
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 544 | 4,330
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 330 | 50
Fixed maturity securities, available-for-sale, at fair value | $ 53,989 | $ 79,791

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