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Investments, Fixed Maturities by Contractual Maturities (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Carrying Value [Abstract]    
Due in one year or less $ 1,425 $ 2,544
Due after one year through five years 17,305 20,278
Due after five years through ten years 93,076 90,667
Due after ten years 77,645 80,099
Varying maturities 19,026 17,082
Totals 208,477 210,670
Amortized Cost [Abstract]    
Due in one year or less 1,417 2,507
Due after one year through five years 17,520 20,038
Due after five years through ten years 91,886 90,926
Due after ten years 75,941 79,627
Varying maturities 19,159 17,407
Cost or amortized cost $ 205,923 $ 210,505