Investments (Details 5) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Net unrealized investment gains (losses) on fixed maturity securities, net of tax
Reclassification of net realized investment (gains) losses to net income	[1],[2]	$ (481)	$ (3,792)
Fixed Maturity Securities [Member]
Net unrealized investment gains (losses) on fixed maturity securities, net of tax
Beginning of period		198,714	336,604
Change in unrealized investment gains and losses		78,341	45,486
Reclassification of net realized investment (gains) losses to net income		(674)	(846)
End of period		276,381	381,244
Equity securities [Member]
Net unrealized investment gains (losses) on fixed maturity securities, net of tax
Beginning of period		2,649	6,988
Change in unrealized investment gains and losses		2,188	(658)
Reclassification of net realized investment (gains) losses to net income		193	(2,946)
End of period		$ 5,030	$ 3,384

[1] All amounts are net of tax.

[2] The pretax amounts reclassified from accumulated other comprehensive income (loss), $740 and $5,834, are included in net realized investment gains and losses and the related tax expenses, $259 and $2,042, are included in income tax expense in the Consolidated Statements of Operations for the three months ended March 31, 2016 and 2015, respectively.