Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income (loss)	$ 21,286	$ 12,915	$ 49,133	$ 35,718
Change in net unrealized gains (losses) on investments:
Unrealized gains (losses) on investments arising during the period, net of deferred tax of $2,676 and $8,845 for 3 months ended September 30, 2013 and September 30, 2012 and $14,988 and $16,564 for 9 months ended September 30, 2013 and September 30, 2012, respectively	5,003	16,471	(27,780)	32,881
Reclassification adjustment for net realized (gains) losses included in net income net of deferred tax of $322 and $1,152 for 3 months ended September 30, 2013 and September 30, 2012, $3,442 and $1,353 for 9 months ended September 30, 2013 and September 30, 2012, respectively	598	(2,139)	(6,392)	(2,513)
Change in net unrealized gains (losses) on investments	5,601	14,332	(34,172)	30,368
Change in other-than-temporary impairments:
Non credit other-than-temporary impairments arising during the period, net of deferred tax of $30 and $213 for 3 months ended September 30, 2013 and September 30, 2012 and $134 and $476 for 9 months ended September 30, 2013 and September 30, 2012, respectively	(55)	395	248	884
Reclassification adjustment for non credit other-than-temporary impairment losses recognized in net income net of deferred tax of $0 for 3 months ended September 30, 2013 and September 30, 2012,and $15 for 9 months ended September 30, 2012, respectively				28
Change in other-than-temporary impairments	(55)	395	248	912
Change in foreign currency translation gains (losses), net of deferred tax of $867 and $1,679 for 3 months ended September 30, 2013 and September 30, 2012,and $108 and $172 for 9 months ended September 30, 2013 and September 30, 2012, respectively	(1,370)	3,118	209	(694)
Other comprehensive income (loss)	4,176	17,845	(33,715)	30,586
Comprehensive income (loss)	$ 25,462	$ 30,760	$ 15,418	$ 66,304