Investments - Net Realized and Unrealized Investment Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Equity securities:
Equity securities	$ (3,663)	$ (5,201)
Net realized and unrealized investment gains (losses)
Net realized and unrealized investment losses	(5,282)	(7,279)
Available-for-sale securities
Available-for-sale securities:
Gross realized gains	206	491
Gross realized losses	(1,825)	(2,571)
Net realized losses on available-for-sale securities	(1,619)	(2,080)
Equity securities
Equity securities:
Equity securities	(3,663)	(5,201)
Miscellaneous
Net realized and unrealized investment gains (losses)
Miscellaneous	$ 0	$ 2

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

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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 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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