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
Net Investment Income [Line Items]
Investment income	$ 1,149	$ 919	$ 2,116	$ 1,795
Investment expenses	(98)	(81)	(155)	(156)
Net investment income	1,051	838	1,961	1,639
Debt securities
Net Investment Income [Line Items]
Investment income	998	868	1,855	1,694
Equity securities
Net Investment Income [Line Items]
Investment income	35	38	75	65
Cash, cash equivalents and short-term investments
Net Investment Income [Line Items]
Investment income	$ 116	$ 13	$ 186	$ 36

Amount, before 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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-SubTopic 220
-Section S99
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Amount of expenses related to the generation of investment income.

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-Publisher FASB
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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.

+ References

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