Consolidated Statements of Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Unrealized gains (losses) on investments arising during the period, deferred tax	$ 5,686	$ (19,404)	$ 12,810	$ (19,037)
Reclassification adjustment for net realized (gains) losses included in net income, deferred tax	1,357	(870)	879	(2,390)
Non credit other-than-temporary impairments arising during the period, deferred tax	40	13	69	163
Reclassification adjustment for non credit other-than-temporary impairment losses recognized in net income, deferred tax	0	0	0	0
Change in foreign currency translation gains (losses), deferred tax	$ 785	$ 566	$ 2,800	$ 975