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Investments (Details 2) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Other Than Temporary Impairment Credit Losses Recognized In Earnings Roll Forward
Balance, beginning of period	$ 45,903,000	$ 52,484,000	$ 63,947,000	$ 47,291,000
Initial impairments - credit loss OTTI recognized on securities not previously impaired	0	5,259,000	1,962,000	6,731,000
Additional impairments - credit loss OTTI recognized on securities previously impaired	1,306,000	2,432,000	10,187,000	6,871,000
Other Than Temporary Impairments Credit Losses On Securities Impaired To Fair Value	(2,622,000)	0	(22,291,000)	0
Credit loss impairments previously recognized on securities which were sold during the period	(20,725,000)	(752,000)	(29,943,000)	(1,470,000)
Balance, end of period	$ 23,862,000	$ 59,423,000	$ 23,862,000	$ 59,423,000

X

- Definition

Other than temporary impairment, OTTI, credit losses on securities impaired to fair value. This item represents circumstances where the Company determined in the current period that it intends to sell the security or it is more likely than not that it will be required to sell the security before recovery of the securitys amortized cost.

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