Investments Cash, Cash Equivalents and Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract]
Fixed maturity securities	$ 966,693	$ 932,159
Fixed maturity securities percent	84.80%	83.60%
Equity securities	$ 69,809	$ 69,879
Equity securities percent	6.10%	6.30%
Mortgage loans	$ 610	$ 628
Mortgage loans percent	0.10%	0.10%
Policy loans	$ 56,652	$ 54,032
Policy loans percent	5.00%	4.80%
Real estate and other long-term investments	$ 8,120	$ 8,266
Real estate and other long-term investments percent	0.70%	0.70%
Cash and cash equivalents	$ 37,820	$ 50,708	$ 57,437	$ 54,593
Cash and cash equivalents percent	3.30%	4.50%
Total cash, cash equivalents and investments	$ 1,139,704	$ 1,115,672
Total cash, cash equivalents and investments percent	100.00%	100.00%