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Investments in Securities and Fair Value Investments in Securities (Schedule of Earnings on Investments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest and dividends	$ 10,657	$ 9,055
Fixed maturity securities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest and dividends	3,832	2,317
Equity securities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest and dividends	1,120	1,078
Invested cash and other short-term investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest and dividends	5,703	5,659
Miscellaneous interest
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest and dividends	$ 2	$ 1

X

- Definition

Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities.

+ References

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-Topic 220
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-Name Accounting Standards Codification
-Section S99
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