Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net income (loss)	$ 63,762	$ 25,597	$ 69,578
Change in net unrealized gains (losses) on investments:
Unrealized gains (losses) on investments arising during the period, net of deferred tax of $13,136, $17,776 and $9,242 in 2012, 2011 and 2010, respectively	24,350	34,276	16,137
Reclassification adjustment for net realized (gains) losses included in net income net of deferred tax of $10,314, $2,588 and $9,045 in 2012, 2011 and 2010, respectively	(19,154)	(4,807)	(16,797)
Change in net unrealized gains (losses on investments)	5,196	29,469	(660)
Change in other-than-temporary impairments:
Non credit other-than-temporary impairments arising during the period, net of deferred tax of $612, $39 and $2,045 in 2012, 2011 and 2010, respectively	1,135	72	(3,798)
Reclassification adjustment for non credit other-than-temporary impairment losses recognized in net income net of deferred tax of $16, $84 and $524 in 2012, 2011 and 2010, respectively	(29)	(155)	974
Change in other-than-temporary impairments	1,106	(83)	(2,824)
Change in foreign currency translation gains (losses), net of deferred tax of $521, $192 and $157 in 2012, 2011 and 2010, respectively	(1,342)	401	290
Other comprehensive income (loss)	4,960	29,787	(3,194)
Comprehensive income (loss)	$ 68,722	$ 55,384	$ 66,384