Investments Net Investment Income (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Components of Net Investment Income [Abstract]
Taxable bonds	$ 3,476	$ 2,239	$ 6,543	$ 4,000
Tax exempt municipal bonds	888	1,083	1,896	2,168
Cash equivalents and short-term investments	156	217	401	477
Dividends on equity securities	566	512	1,087	924
Gross investment income	5,086	4,051	9,927	7,569
Investment expenses	(280)	(269)	(606)	(558)
Net investment income	$ 4,806	$ 3,782	$ 9,321	$ 7,011

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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Amount of operating interest income, including amortization and accretion of premiums and discounts, on securities exempt from state, federal and other income tax.

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Amount of expenses related to the generation of investment income.

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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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