Investments In Securities and Fair Value (Schedule Of Gross Unrealized Gains And Losses And Amortized Cost For Securities) (Details) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Debt and Equity Securities, FV-NI [Line Items]
Fixed maturities, available-for-sale, amortized cost	$ 92,912		$ 100,667
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	482	$ 0
Impairment amount for cost-method investments	0		0
Government obligations
Debt and Equity Securities, FV-NI [Line Items]
Fixed maturities, available-for-sale, amortized cost	24,060		25,161
Available-for-sale, at fair value, Gross Unrealized Gains	152		6
Available-for-sale, at fair value, Gross Unrealized Losses	0		4
Available-for-sale, at fair value, Estimated Fair Value	24,212		25,163
General obligations of U.S. states, territories and political subdivisions
Debt and Equity Securities, FV-NI [Line Items]
Fixed maturities, available-for-sale, amortized cost	17,569		18,887
Available-for-sale, at fair value, Gross Unrealized Gains	1,245		843
Available-for-sale, at fair value, Gross Unrealized Losses	0		0
Available-for-sale, at fair value, Estimated Fair Value	18,814		19,730
Special revenue issuer obligations of U.S. states, territories and political subdivisions
Debt and Equity Securities, FV-NI [Line Items]
Fixed maturities, available-for-sale, amortized cost	47,305		51,188
Available-for-sale, at fair value, Gross Unrealized Gains	3,098		2,530
Available-for-sale, at fair value, Gross Unrealized Losses	3		20
Available-for-sale, at fair value, Estimated Fair Value	$ 50,400		$ 53,698
Number of Special Revenue Bonds	50		50
Corporate debt securities
Debt and Equity Securities, FV-NI [Line Items]
Fixed maturities, available-for-sale, amortized cost	$ 3,978		$ 5,431
Available-for-sale, at fair value, Gross Unrealized Gains	1,024		621
Available-for-sale, at fair value, Gross Unrealized Losses	0		5
Available-for-sale, at fair value, Estimated Fair Value	5,002		6,047
Total fixed maturities
Debt and Equity Securities, FV-NI [Line Items]
Fixed maturities, available-for-sale, amortized cost	92,912		100,667
Available-for-sale, at fair value, Gross Unrealized Gains	5,519		4,000
Available-for-sale, at fair value, Gross Unrealized Losses	3		29
Available-for-sale, at fair value, Estimated Fair Value	$ 98,428		$ 104,638

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

No definition available.

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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Loss recognized as a result of the initial and subsequent write-down of a long-lived asset's carrying amount to fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230

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The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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