Investments - Components of Net Investment Income (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Components of net investment income
Interest on fixed maturity securities	$ 40,886	$ 36,160	$ 37,727
Dividends on equity securities	6,746	6,421	5,044
Equity in earnings of other invested assets	2,304	4,895	1,378
Interest on other assets	61	22	27
Total Investment Income	49,997	47,498	44,176
Investment expenses	3,272	3,363	3,131
Net investment income	$ 46,725	$ 44,135	$ 41,045

Amount of operating dividend income on securities.

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