Investments - Net Realized and Unrealized Investment Gains (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Equity securities:
Equity securities	$ 910	$ 580	$ 1,669	$ 2,695
Net realized and unrealized investment gains (losses)	479	(1,795)	981	58
Available-for-sale securities
Available-for-sale securities:
Gross realized gains	331	417	680	687
Gross realized losses	(762)	(2,792)	(1,373)	(3,324)
Net realized losses on available-for-sale securities	(431)	(2,375)	(693)	(2,637)
Equity securities
Equity securities:
Equity securities	910	580	1,669	2,695
Miscellaneous
Equity securities:
Miscellaneous	$ 0	$ 0	$ 5	$ 0

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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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of gain (loss) included in earnings for investments classified as other.

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