Investments - Investment Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net Investment Income
Investment income	$ 6,888	$ 4,901	$ 19,665	$ 12,489
Investment expenses	(267)	(213)	(756)	(482)
Net investment income	6,621	4,688	18,909	12,007
Fixed Maturities
Net Investment Income
Investment income	5,725	4,111	15,929	10,696
Equity Securities
Net Investment Income
Investment income	525	375	1,455	940
Cash and cash equivalents
Net Investment Income
Investment income	588	285	1,427	445
Other Investments
Net Investment Income
Investment income	41	124	830	385
Other Assets
Net Investment Income
Investment income	$ 9	$ 6	$ 24	$ 23

Amount of expenses related to the generation of investment income.

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Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities.

+ References

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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