Fair Value of Financial Assets and Financial Liabilities (Fair Value of Assets and Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Other policyholder funds
Liabilities and Related Instruments [Abstract]
Carrying Value, Liabilities	$ 1,705	$ 1,706
Estimated Fair Value, Liabilities	1,705	1,706
Short-term notes payable and current portion of long-term debt
Liabilities and Related Instruments [Abstract]
Carrying Value, Liabilities	800	1,300
Estimated Fair Value, Liabilities	800	1,300
Long-term debt
Liabilities and Related Instruments [Abstract]
Carrying Value, Liabilities	14,342	14,339
Estimated Fair Value, Liabilities	14,342	14,339
Held-to-maturity securities
Assets and Related Instruments [Abstract]
Carrying Value, Assets	1,573	1,616
Estimated Fair Value, Assets	1,575	1,645
Mortgage loans on real estate
Assets and Related Instruments [Abstract]
Carrying Value, Assets	161	162
Estimated Fair Value, Assets	161	162
Policy loans
Assets and Related Instruments [Abstract]
Carrying Value, Assets	1,842	1,810
Estimated Fair Value, Assets	1,842	1,810
Company owned life insurance
Assets and Related Instruments [Abstract]
Carrying Value, Assets	4,835	4,974
Estimated Fair Value, Assets	4,835	4,974
Other invested assets
Assets and Related Instruments [Abstract]
Carrying Value, Assets	2,451	2,574
Estimated Fair Value, Assets	$ 2,451	$ 2,574