Fair Value of Financial Assets and Financial Liabilities (Fair Value of Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other policyholder funds
Liabilities and Related Instruments [Abstract]
Carrying Value, Liabilities	$ 1,706	$ 1,629
Estimated Fair Value, Liabilities	1,706	1,629
Short-term notes payable and current portion of long-term debt
Liabilities and Related Instruments [Abstract]
Carrying Value, Liabilities	1,300	1,800
Estimated Fair Value, Liabilities	1,300	1,800
Long-term debt
Liabilities and Related Instruments [Abstract]
Carrying Value, Liabilities	14,339	15,326
Estimated Fair Value, Liabilities	14,339	15,326
Held-to-maturity securities
Assets and Related Instruments [Abstract]
Carrying Value, Assets	1,616	1,890
Estimated Fair Value, Assets	1,645	1,930
Mortgage loans on real estate
Assets and Related Instruments [Abstract]
Carrying Value, Assets	162	174
Estimated Fair Value, Assets	162	174
Policy loans
Assets and Related Instruments [Abstract]
Carrying Value, Assets	1,810	1,708
Estimated Fair Value, Assets	1,810	1,708
Company owned life insurance
Assets and Related Instruments [Abstract]
Carrying Value, Assets	4,974	4,864
Estimated Fair Value, Assets	4,974	4,864
Other invested assets
Assets and Related Instruments [Abstract]
Carrying Value, Assets	2,574	2,958
Estimated Fair Value, Assets	$ 2,574	$ 2,958