Investments (Gross Gains And Losses Realized On Sales Of Investments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fixed Maturity Securities [Member]
Investments [Line Items]
Gross Realized Gains	$ 631	$ 7,015	$ 9,320
Gross Realized Losses	(495)	(9,734)	(3,842)
Net	136	(2,719)	5,478
Equity Securities [Member]
Investments [Line Items]
Gross Realized Gains	41,305	59,342	82,385
Gross Realized Losses	(58,764)	(17,705)	(58,297)
Net	(17,459)	41,637	24,088
Short-term Investments [Member]
Investments [Line Items]
Gross Realized Gains	0	0	0
Gross Realized Losses	(1,396)	(1,943)	(903)
Net	$ (1,396)	$ (1,943)	$ (903)