CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Deferred tax, change in net unrealized gains (losses) on investments	$ 7,906		$ (322)		$ 15,702		$ 8,251
Deferred tax, change in foreign currency translation gains (losses)	1,679		(273)		172		86
Disclosure of reclassification amount, net of tax:
Unrealized gains (losses) on investments arising during period	16,866		411		33,456		15,986
Reclassification adjustment for net realized gains (losses) included in net income	(2,139)		(1,025)		(2,513)		264
Reclassification adjustment for other-than-temporary impairment losses recognized in net income			103		337		110
Change in net unrealized gains (losses) on investments, net of tax	$ 14,727	[1]	$ (511)	[1]	$ 31,280	[2]	$ 16,360	[2]

[1] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 16,866 $ 411 Reclassification adjustment for net realized gains (losses) included in net income (2,139 ) (1,025 ) Reclassification adjustment for other-than-temporary impairment losses recognized in net income - 103 Change in net unrealized gains (losses) on investments, net of tax $ 14,727 $ (511 )

[2] Disclosure of reclassification amount, net of tax: Unrealized gains (losses) on investments arising during period $ 33,456 $ 15,986 Reclassification adjustment for net realized gains (losses) included in net income (2,513 ) 264 Reclassification adjustment for other-than-temporary impairment losses recognized in net income 337 110 Change in net unrealized gains (losses) on investments, net of tax $ 31,280 $ 16,360