Investments (Details 5) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Net unrealized investment gains and losses
Reclassification of net realized investment (gains) losses to net income	[1],[2]	$ 203	$ (481)
Fixed Maturity Securities [Member]
Net unrealized investment gains and losses
Beginning of period		197,978	198,714
Change in net unrealized investment gains and losses		21,891	78,341
Reclassification of net realized investment (gains) losses to net income		(484)	(674)
End of period		219,385	276,381
Equity securities [Member]
Net unrealized investment gains and losses
Beginning of period		4,963	2,649
Change in net unrealized investment gains and losses		3,302	2,188
Reclassification of net realized investment (gains) losses to net income		687	193
End of period		$ 8,952	$ 5,030

[1] All amounts are net of tax.

[2] The pretax amounts reclassified from accumulated other comprehensive income (loss), $(313) and $740, are included in net realized investment gains and losses and the related income tax expenses, $(110) and $259, are included in income tax expense in the Consolidated Statements of Operations for the three months ended March 31, 2017 and 2016, respectively.