Investments (Major Categories of Investment Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	$ 970	$ 1,043	$ 2,893	$ 3,149
Less: Investment expenses	31	38	98	124
Net investment income	939	1,005	2,795	3,025
Fixed maturities
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	860	895	2,518	2,744
Equity securities
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	24	23	72	77
Mortgage loans on real estate
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	2	4	7	11
Investment real estate
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	2	1	4	5
Policy loans
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	30	32	96	96
Company owned life insurance change in surrender value
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	38	27	95	80
Other
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	$ 14	$ 61	$ 101	$ 136