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Investments In Securities and Fair Value (Schedule Of Gross Unrealized Gains And Losses And Amortized Cost For Securities) (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Debt and Equity Securities, FV-NI [Line Items] |  |
Impairment amount for cost-method investments | $ 0 | $ 0
Total, amortized cost | 66,209 | 75,511
Fixed maturity securities, available-for-sale, at fair value (amortized cost: March 31, 2022: $66,209; December 31, 2021: $75,511) | 67,725 | 79,791
Other-than-temporary impairment loss, debt securities, available-for-sale, recognized in earnings | 0 |
General obligations of U.S. states, territories and political subdivisions |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 224 | 922
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 0 | 0
Total, amortized cost | 15,011 | 16,669
Fixed maturity securities, available-for-sale, at fair value (amortized cost: March 31, 2022: $66,209; December 31, 2021: $75,511) | $ 15,235 | $ 17,591
Special revenue issuer obligations of U.S. states, territories and political subdivisions |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Number of Special Revenue Bonds | 45 | 45
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | $ 806 | $ 2,453
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 56 | 2
Total, amortized cost | 40,620 | 41,753
Fixed maturity securities, available-for-sale, at fair value (amortized cost: March 31, 2022: $66,209; December 31, 2021: $75,511) | 41,370 | 44,204
Corporate debt securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 707 | 955
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 165 | 48
Total, amortized cost | 10,578 | 17,089
Fixed maturity securities, available-for-sale, at fair value (amortized cost: March 31, 2022: $66,209; December 31, 2021: $75,511) | 11,120 | 17,996
Total fixed maturities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Debt securities, available-for-sale, accumulated gross unrealized gain, before tax | 1,737 | 4,330
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | 221 | 50
Total, amortized cost | 66,209 | 75,511
Fixed maturity securities, available-for-sale, at fair value (amortized cost: March 31, 2022: $66,209; December 31, 2021: $75,511) | $ 67,725 | $ 79,791

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