Summary of Investments (Unrealized Appreciation) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Change in net unrealized investment appreciation
Available-for-sale fixed maturities	$ 98,381	$ (29,009)
Available-for-sale equity securities	12,700	(1,802)
Deferred policy acquisition costs	(20,220)	4,797
Income tax effect	(31,802)	9,105
Total change in net unrealized investment appreciation, net of tax	$ 59,059	$ (16,909)