Investments (Details 4) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Proceeds received from sales of fixed maturities and equity securities
Proceeds received, Fixed maturity securities	$ 81,120	$ 98,942	$ 327,641	$ 198,191
Proceeds received, Equity securities	5,633	3,489	26,442	11,980
Fixed maturity securities [Member]
Proceeds received from sales of fixed maturities and equity securities
Gross gains realized	6,400	5,871	18,631	9,998
Gross losses realized	(3,267)	(4,421)	(5,012)	(5,399)
Equity securities [Member]
Proceeds received from sales of fixed maturities and equity securities
Gross gains realized	680	722	5,878	2,196
Gross losses realized	$ (397)	$ (86)	$ (514)	$ (267)