Derivative Financial Instruments (Schedule Of Derivative Gains And Losses In The Consolidated Statements Of Operations) (Details) (Derivatives Not Designated as Hedging Instrument [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Derivative Financial Instruments [Line Items]
Gain Recognized in Income (Loss)	$ 1,430	$ 321
Interest rate swap agreements [Member] | Other revenue [Member]
Derivative Financial Instruments [Line Items]
Gain Recognized in Income (Loss)	0	103
Total Return Swap [Member] | Other revenue [Member]
Derivative Financial Instruments [Line Items]
Gain Recognized in Income (Loss)	875	0
Equity contracts [Member] | Net realized investment (losses) gains [Member]
Derivative Financial Instruments [Line Items]
Gain Recognized in Income (Loss)	$ 555	$ 218