Investments (Gross Gains And Losses Realized On Sales Of Investments) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fixed Maturity Securities [Member]
Investments [Line Items]
Gross Realized Gains	$ 7,015	$ 9,320	$ 11,473
Gross Realized Losses	(9,734)	(3,842)	(83)
Net	(2,719)	5,478	11,390
Equity Securities [Member]
Investments [Line Items]
Gross Realized Gains	59,342	82,385	19,538
Gross Realized Losses	(17,705)	(58,297)	(12,017)
Net	41,637	24,088	7,521
Short-Term Investments [Member]
Investments [Line Items]
Gross Realized Gains	0	0	2
Gross Realized Losses	(1,943)	(903)	(722)
Net	$ (1,943)	$ (903)	$ (720)