Investments - Realized and Unrealized Investment Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Available-for-sale securities:
Gross realized gains	$ 418	$ 1,075	$ 909	$ 2,998
Gross realized losses	(2,840)	(678)	(5,411)	(1,118)
Net realized (losses) gains on available-for-sale securities	(2,422)	397	(4,502)	1,880
Equity securities:
Equity securities	(7,902)	2,371	(13,103)	1,692
Miscellaneous:
Miscellaneous	0	1	2	1
Net realized and unrealized investment (losses) gains	$ (10,324)	$ 2,769	$ (17,603)	$ 3,573

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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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