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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, 2021 USD ($) | Dec. 31, 2020 USD ($)
--- | --- | ---
Debt and Equity Securities, FV-NI [Line Items] |  |
Total, amortized cost | $ 75,511 | $ 112,037
Fixed maturity securities, available-for-sale, at fair value | 79,791 | 117,713
Government obligations |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Total, amortized cost | 0 | 24,026
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 57
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Fixed maturity securities, available-for-sale, at fair value | 0 | 24,083
General obligations of U.S. states, territories and political subdivisions |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Total, amortized cost | 16,669 | 17,391
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 922 | 1,262
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Fixed maturity securities, available-for-sale, at fair value | 17,591 | 18,653
Special revenue issuer obligations of U.S. states, territories and political subdivisions |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Total, amortized cost | 41,753 | 44,939
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 2,453 | 3,270
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 2 | 3
Fixed maturity securities, available-for-sale, at fair value | $ 44,204 | $ 48,206
Number of Special Revenue Bonds | 50 | 50
Corporate debt securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Total, amortized cost | $ 17,089 | $ 25,681
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 955 | 1,114
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 48 | 24
Fixed maturity securities, available-for-sale, at fair value | 17,996 | 26,771
Total fixed maturity securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Total, amortized cost | 75,511 | 112,037
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 4,330 | 5,703
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 50 | 27
Fixed maturity securities, available-for-sale, at fair value | $ 79,791 | $ 117,713

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