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, 2019 USD ($)	Dec. 31, 2018 USD ($)
Government obligations
Debt and Equity Securities, FV-NI [Line Items]
Fixed maturities, available-for-sale, amortized cost	$ 25,161	$ 1,023
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	6	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	4	7
Available-for-sale, at fair value, Estimated Fair Value	25,163	1,016
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	18,887	19,518
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	843	229
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	143
Available-for-sale, at fair value, Estimated Fair Value	19,730	19,604
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	51,188	56,675
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	2,530	1,237
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	20	329
Available-for-sale, at fair value, Estimated Fair Value	$ 53,698	$ 57,583
Number of Special Revenue Bonds	60	60
Corporate debt securities
Debt and Equity Securities, FV-NI [Line Items]
Fixed maturities, available-for-sale, amortized cost	$ 5,431	$ 10,498
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	621	303
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	5	47
Available-for-sale, at fair value, Estimated Fair Value	6,047	10,754
Total fixed maturity securities
Debt and Equity Securities, FV-NI [Line Items]
Fixed maturities, available-for-sale, amortized cost	100,667	87,714
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	4,000	1,769
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	29	526
Available-for-sale, at fair value, Estimated Fair Value	$ 104,638	$ 88,957

Number of Special Revenue Bonds

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- Definition

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

+ References

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- Definition

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=118939692&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.

+ References

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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+ References

No definition available.

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