Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net income (loss)	$ 16,861	$ 13,937	$ 44,829	$ 27,847
Change in net unrealized gains (losses) on investments:
Unrealized gains (losses) on investments arising during the period, net of deferred tax of $5,686 and $(19,404) for 3 months ended June 30, 2014 and June 30, 2013 and $12,810 and $(19,037) for 6 months ended June 30, 2014 and June 30, 2013, respectively	10,769	(36,123)	24,290	(35,335)
Reclassification adjustment for net realized (gains) losses included in net income net of deferred tax of $1,357 and $(870) for 3 months ended June 30, 2014 and June 30, 2013 and $879 and $(2,390) for 6 months ended June 30, 2014 and June 30, 2013, respectively	2,520	(1,616)	1,633	(4,438)
Change in net unrealized gains (losses) on investments	13,289	(37,739)	25,923	(39,773)
Change in other-than-temporary impairments:
Non credit other-than-temporary impairments arising during the period, net of deferred tax of $40 and $13 for 3 months ended June 30, 2014 and June 30, 2013 and $69 and $163 for 6 months ended June 30, 2014 and June 30, 2013, respectively	73	24	130	303
Reclassification adjustment for non credit other-than-temporary impairment losses recognized in net income net of deferred tax of $0 for 3 months ended June 30, 2014 and June 30, 2013 and $0 for 6 months ended June 30, 2014 and June 30, 2013, respectively
Change in other-than-temporary impairments	73	24	130	303
Change in foreign currency translation gains (losses), net of deferred tax of $785 and $566 for 3 months ended June 30, 2014 and June 30, 2013 and $2800 and $975 for 6 months ended June 30, 2014 and June 30, 2013, respectively	2,742	(1,051)	(4,997)	1,579
Other comprehensive income (loss)	16,104	(38,766)	21,056	(37,891)
Comprehensive income (loss)	$ 32,965	$ (24,829)	$ 65,885	$ (10,044)