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		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative Financial Instruments [Line Items]
Gain Recognized in Income (Loss)	$ (1,463)	$ 924	$ 2,199	$ 2,206
Interest rate swap agreements [Member] | Other revenue [Member]
Derivative Financial Instruments [Line Items]
Gain Recognized in Income (Loss)	0	0	0	103
Total Return Swap [Member] | Other revenue [Member]
Derivative Financial Instruments [Line Items]
Gain Recognized in Income (Loss)	(3,090)	381	(482)	381
Equity contracts [Member] | Net realized investment (losses) gains [Member]
Derivative Financial Instruments [Line Items]
Gain Recognized in Income (Loss)	$ 1,627	$ 543	$ 2,681	$ 1,722