Investments (Major Categories of Investment Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	$ 818	$ 966
Less: Investment expenses	37	40
Net investment income	781	926
Fixed maturities
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	891	817
Equity securities
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	20	24
Mortgage loans on real estate
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	2	2
Investment real estate
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	1	2
Policy loans
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	35	33
Company owned life insurance change in surrender value
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	(139)	43
Other
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Gross investment income	$ 8	$ 45