Investments - Components of Net Investment Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Components of net investment income
Interest on fixed maturity securities	$ 10,074	$ 9,636	$ 28,925	$ 27,320
Dividends on equity securities	1,442	1,327	4,198	3,746
Equity in earnings of other invested assets	379	987	2,644	3,834
Interest on other assets	23	6	38	17
Total investment income	11,918	11,956	35,805	34,917
Investment expenses	806	844	2,468	2,499
Net investment income	$ 11,112	$ 11,112	$ 33,337	$ 32,418

Amount of operating dividend income on securities.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.

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