Investments (Fixed Maturities Proceeds) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Fixed maturities, available-for-sale
Available For Sale
Proceeds from sales	$ 20,079	$ 8,665	$ 155,013	$ 127,142
Proceeds from maturities/repayments	186,612	158,912	488,780	506,694
Gross investment gains from sales, prepayments and maturities	6,226	6,815	11,289	13,641
Gross investment losses from sales and maturities	(420)	(301)	(1,054)	(1,225)
Fixed maturity and equity security impairments
Net writedowns for other-than-temporary impairment losses on fixed maturities recognized in earnings	(1,080)	0	(1,463)	(127)
Equity securities, available-for-sale
Available For Sale
Proceeds from sales	687	0	687	5,210
Gross investment gains from sales, prepayments and maturities	345	0	345	145
Gross investment losses from sales and maturities	0	0	0	0
Fixed maturity and equity security impairments
Writedowns for impairments on equity securities	$ 0	$ 0	$ (2)	$ 0