Investments Net Investment Income (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Components of Net Investment Income [Abstract]
Taxable bonds	$ 7,795	$ 5,729
Tax exempt municipal bonds	857	885
Cash equivalents and short-term investments	19	1
Dividends on equity securities	1,030	869
Gross investment income	9,701	7,484
Investment expenses	(613)	(542)
Net investment income	$ 9,088	$ 6,942

Interest income derived from funds deposited with both domestic and foreign financial institutions including funds in money market and other accounts.

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