Investments - Realized and Unrealized Investment Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Available-for-sale securities:
Gross realized gains	$ 146	$ 2,424	$ 1,055	$ 5,422
Gross realized losses	(4,752)	(235)	(10,163)	(1,353)
Net realized (losses) gains on available-for-sale securities	(4,606)	2,189	(9,108)	4,069
Equity securities:
Equity securities	(1,624)	(579)	(14,727)	1,113
Miscellaneous:
Miscellaneous	0	0	2	1
Net realized and unrealized investment (losses) gains	$ (6,230)	$ 1,610	$ (23,833)	$ 5,183

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Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

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Amount of unrealized and realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of gain (loss) included in earnings for investments classified as other.

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