Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net income	$ 27,968	$ 13,910
Change in net unrealized gains (losses) on investments:
Unrealized gains (losses) on investments arising during the period, net of tax of $7,010 and $617 in 2014 and 2013, respectively	13,314	1,145
Reclassification adjustment for net realized (gains) losses included in net income net of tax of $366 and $1,770 in 2014 and 2013, respectively	(679)	(3,179)
Change in net unrealized gains (losses) on investments	12,635	(2,034)
Change in other-than-temporary impairments:
Non credit other-than-temporary impairments arising during the period, net of tax of $31 and $150 in 2014 and 2013, respectively	56	279
Reclassification adjustment for non credit other-than-temporary impairment losses recognized in net income
Change in other-than-temporary impairments	56	279
Change in foreign currency translation gains (losses), net of tax of $3,584 and $1,543 in 2014 and 2013, respectively	(7,739)	2,630
Other comprehensive income	4,952	875
Comprehensive income	$ 32,920	$ 14,785