Investments - Net Realized and Unrealized Investment Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Equity securities:
Equity securities	$ 1,520	$ 910	$ 606	$ 1,669
Net realized and unrealized investment gains (losses)	557	479	(208)	981
Available-for-sale securities
Available-for-sale securities:
Gross realized gains	3,074	331	4,095	680
Gross realized losses	(4,037)	(762)	(4,909)	(1,373)
Net realized losses on available-for-sale securities	(963)	(431)	(814)	(693)
Equity securities
Equity securities:
Equity securities	1,520	910	606	1,669
Miscellaneous
Equity securities:
Miscellaneous	$ 0	$ 0	$ 0	$ 5

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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
-Topic 320
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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
-Topic 320
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-Name Accounting Standards Codification
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-Publisher FASB
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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).

+ References

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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