CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $) In Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Tax expense (benefit), change in net unrealized gains (losses) on investments	$ 8,390		$ 4,162		$ 8,573		$ 7,354
Tax (benefit) expense change in foreign currency translation (losses) gains	(4)		(554)		359		234
Disclosure of reclassification amount, net of tax:
Unrealized gains (losses) on investments arising during period	18,385		15,281		17,266		25,196
Reclassification adjustment for net realized (gains) losses included in net income	(1,913)		7,163		(913)		11,136
Reclassification adjustment for other-than-temporary impairment losses recognized in net income	361		(104)		518		(160)
Change in net unrealized gains (losses) on investments, net of tax	$ 16,833	[1]	$ 8,222	[1]	$ 16,871	[2]	$ 14,220	[2]

[1] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 18,385 $ 15,281 Reclassification adjustment for net realized (gains) losses included in net income (1,913 ) 7,163 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 361 (104 ) Change in net unrealized gains (losses) on investments, net of tax $ 16,833 $ 8,222

[2] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 17,266 $ 25,196 Reclassification adjustment for net realized (gains) losses included in net income (913 ) 11,136 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 518 (160 ) Change in net unrealized gains (losses) on investments, net of tax $ 16,871 $ 14,220