Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income (loss)	$ 31,225	$ 21,286	$ 76,054	$ 49,133
Change in net unrealized gains (losses) on investments:
Unrealized gains (losses) on investments arising during the period, net of deferred tax of $8,231 and $2,676 for 3 months ended September 30, 2014 and September 30, 2013 and $4,951 and $14,988 for 9 months ended September 30, 2014 and September 30, 2013, respectively	(15,405)	5,003	9,576	(27,780)
Reclassification adjustment for net realized (gains) losses included in net income net of deferred tax of $2,581 and $322 for 3 months ended September 30, 2014 and September 30, 2013 and $3,088 and $3,442 for 9 months ended September 30, 2014 and September 30, 2013, respectively	4,794	598	5,736	(6,392)
Change in net unrealized gains (losses) on investments	(10,611)	5,601	15,312	(34,172)
Change in other-than-temporary impairments:
Non credit other-than-temporary impairments arising during the period, net of deferred tax of $14 and $30 for 3 months ended September 30, 2014 and September 30, 2013 and $55 and $134 for 9 months ended September 30, 2014 and September 30, 2013, respectively	(27)	(55)	103	248
Reclassification adjustment for non credit other-than-temporary impairment losses recognized in net income net of deferred tax of $0 and $0 for 3 months ended September 30, 2014 and September 30, 2013 and $0 and $0 for 9 months ended September 30, 2014 and September 30, 2013, respectively
Change in other-than-temporary impairments	(27)	(55)	103	248
Change in foreign currency translation gains (losses), net of deferred tax of $0 and $867 for 3 months ended September 30, 2014 and September 30, 2013 and $2,800 and $108 for 9 months ended September 30, 2014 and September 30, 2013, respectively	41	(1,370)	(4,956)	209
Other comprehensive income (loss)	(10,597)	4,176	10,459	(33,715)
Comprehensive income (loss)	$ 20,628	$ 25,462	$ 86,513	$ 15,418