Investments - Components of Net Investment Income (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Components of net investment income
Interest on fixed maturity securities	$ 9,746	$ 8,002	$ 18,851	$ 17,684
Dividends on equity securities	1,436	1,180	2,756	2,419
Equity in earnings of other invested assets	1,249	1,425	2,265	2,847
Interest on other assets	8	5	15	11
Total investment income	12,439	10,612	23,887	22,961
Investment expenses	804	838	1,662	1,655
Net investment income	$ 11,635	$ 9,774	$ 22,225	$ 21,306

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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