Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	$ 1,292,218	$ 1,017,651
Total fixed maturity securities, held-to-maturity	38,717	41,017
Equity securities, at fair value	106,254	118,249
Mortgage loans	26,490	50,070
Short-term investments	274,929	270,226
Total	1,738,608	1,497,213
U.S. government securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	26,486	44,166
Corporate securities and miscellaneous
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	425,628	383,420
Municipal securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	84,716	92,778
Residential mortgage-backed securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	393,833	281,626
Commercial mortgage-backed securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	69,364	29,934
Other asset-backed securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	292,191	185,727
Total fixed maturity securities, held-to-maturity	38,717	41,017
Common stocks:
Fixed maturity securities, available-for-sale:
Equity securities, at fair value	64,251	67,425
Preferred stocks:
Fixed maturity securities, available-for-sale:
Equity securities, at fair value	1,164	7,358
Mutual funds:
Fixed maturity securities, available-for-sale:
Equity securities, at fair value	40,839	43,466
Level 1
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	26,486	44,166
Total fixed maturity securities, held-to-maturity	0	0
Equity securities, at fair value	105,090	110,891
Mortgage loans	0	0
Short-term investments	274,929	270,226
Total	406,505	425,283
Level 1 \| U.S. government securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	26,486	44,166
Level 1 \| Corporate securities and miscellaneous
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	0	0
Level 1 \| Municipal securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	0	0
Level 1 \| Residential mortgage-backed securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	0	0
Level 1 \| Commercial mortgage-backed securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	0	0
Level 1 \| Other asset-backed securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	0	0
Total fixed maturity securities, held-to-maturity	0	0
Level 1 \| Common stocks:
Fixed maturity securities, available-for-sale:
Equity securities, at fair value	64,251	67,425
Level 1 \| Preferred stocks:
Fixed maturity securities, available-for-sale:
Equity securities, at fair value	0	0
Level 1 \| Mutual funds:
Fixed maturity securities, available-for-sale:
Equity securities, at fair value	40,839	43,466
Level 2
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	1,187,812	973,485
Total fixed maturity securities, held-to-maturity	0	0
Equity securities, at fair value	1,164	7,358
Mortgage loans	0	0
Short-term investments	0	0
Total	1,188,976	980,843
Level 2 \| U.S. government securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	0	0
Level 2 \| Corporate securities and miscellaneous
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	354,815	383,420
Level 2 \| Municipal securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	84,716	92,778
Level 2 \| Residential mortgage-backed securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	393,833	281,626
Level 2 \| Commercial mortgage-backed securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	69,364	29,934
Level 2 \| Other asset-backed securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	285,084	185,727
Total fixed maturity securities, held-to-maturity	0	0
Level 2 \| Common stocks:
Fixed maturity securities, available-for-sale:
Equity securities, at fair value	0	0
Level 2 \| Preferred stocks:
Fixed maturity securities, available-for-sale:
Equity securities, at fair value	1,164	7,358
Level 2 \| Mutual funds:
Fixed maturity securities, available-for-sale:
Equity securities, at fair value	0	0
Level 3
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	77,920	0
Total fixed maturity securities, held-to-maturity	38,717	41,017
Equity securities, at fair value	0	0
Mortgage loans	26,490	50,070
Short-term investments	0	0
Total	143,127	91,087
Level 3 \| U.S. government securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	0	0
Level 3 \| Corporate securities and miscellaneous
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	70,813	0
Level 3 \| Municipal securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	0	0
Level 3 \| Residential mortgage-backed securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	0	0
Level 3 \| Commercial mortgage-backed securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	0	0
Level 3 \| Other asset-backed securities
Fixed maturity securities, available-for-sale:
Total fixed maturity securities, available-for-sale	7,107	0
Total fixed maturity securities, held-to-maturity	38,717	41,017
Level 3 \| Common stocks:
Fixed maturity securities, available-for-sale:
Equity securities, at fair value	0	0
Level 3 \| Preferred stocks:
Fixed maturity securities, available-for-sale:
Equity securities, at fair value	0	0
Level 3 \| Mutual funds:
Fixed maturity securities, available-for-sale:
Equity securities, at fair value	$ 0	$ 0

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Fair value portion of asset recognized for present right to economic benefit.

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Amount excluding accrued interest, of 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 investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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