Investments - Investments Classified by Contractural Maturity Date (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Percent of Total
Due in one year or less	7.10%
Due after one year through five years	47.00%
Due after five years through ten years	33.40%
Due after ten years	12.50%
Total	100.00%
Percent of Total
Due in one year or less	7.00%
Due after one year through five years	47.00%
Due after five years through ten years	33.30%
Due after ten years	12.70%
Total	100.00%
Fixed Maturities
Cost or Amortized Cost
Due in one year or less	$ 25,913
Due after one year through five years	172,553
Due after five years through ten years	122,524
Due after ten years	46,358
Cost or adjusted/amortized cost	367,348	$ 350,063
Fair Value
Due in one year or less	25,948
Due after one year through five years	173,260
Due after five years through ten years	122,484
Due after ten years	46,566
Total	$ 368,258	$ 352,630