Investments (Summary Of Gross Gains (Losses) From Sales Of Fixed Maturity And Equity Securities) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales of securities	$ 175,742	$ 178,281	$ 289,824	$ 348,622
Gross gains from sales	5,096	3,815	7,638	6,290
Gross losses from sales	(17,290)	(4,743)	(31,322)	(8,275)
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales of securities	169,533	116,827	303,493	292,943
Gross gains from sales	7,272	3,734	12,414	10,322
Gross losses from sales	$ (7,561)	$ (2,013)	$ (12,768)	$ (9,937)