Realized And Unrealized Investment Gains Realized and Unrealized Investment Gains (Loss) (Realized and unrealized investmetns gains(losses)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Investments, Debt and Equity Securities [Abstract]
Fixed maturity securities, gains	$ 2,062	$ 10,996
Fixed maturity securities, losses	1,598	5,966
Equity securities available for sale	6,457	15,245
Investment funds	45,833	194
Other	0	(500)
Realized Gain (Loss) on Investments, Including Equity Method Investments, Excluding Other than Temporary Impairments and Allowances	52,754	19,969
Decrease in valuation allowance	0	0
Other-than-temporary impairments	0	0
Change in valuation allowance, net of other-than-temporary impairments	0	0
Net investment gains	52,754	19,969
Income tax expense	18,465	6,989
Total after-tax realized investment gains	$ 34,289	$ 12,980