Investments - Investments Classified by Contractural Maturity Date (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Percent of Total
Due in one year or less	13.30%
Due after one year through five years	43.60%
Due after five years through ten years	32.20%
Due after ten years	10.90%
Total	100.00%
Percent of Total
Due in one year or less	13.20%
Due after one year through five years	43.50%
Due after five years through ten years	32.20%
Due after ten years	11.10%
Total	100.00%
Fixed Maturities
Cost or Amortized Cost
Due in one year or less	$ 55,322
Due after one year through five years	181,013
Due after five years through ten years	134,012
Due after ten years	45,258
Cost or adjusted/amortized cost	415,605	$ 350,063
Fair Value
Due in one year or less	55,360
Due after one year through five years	182,064
Due after five years through ten years	134,815
Due after ten years	46,160
Total	$ 418,399	$ 352,630