Investments, Fixed Maturities by Contractual Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Carrying Value [Abstract]
Due in one year or less	$ 1,415	$ 2,544
Due after one year through five years	16,612	20,278
Due after five years through ten years	104,519	90,667
Due after ten years	75,117	80,099
Varying maturities	20,336	17,082
Totals	217,999	210,670
Amortized Cost [Abstract]
Due in one year or less	1,411	2,507
Due after one year through five years	16,795	20,038
Due after five years through ten years	103,571	90,926
Due after ten years	72,923	79,627
Varying maturities	20,541	17,407
Cost or amortized cost	$ 215,241	$ 210,505