Derivative Financial Instruments (Summary Of Location And Amounts Of Derivative Fair Values In The Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Liability Derivatives	$ (1,412)	$ (4,025)
Non-hedging derivatives [Member]
Derivative [Line Items]
Liability Derivatives	(2,300)	(4,219)
Non-hedging derivatives [Member] | Interest rate swap agreements [Member] | Other Assets [Member]
Derivative [Line Items]
Liability Derivatives	(1,412)	(4,025)
Non-hedging derivatives [Member] | Equity contracts [Member] | Other liabilities [Member]
Derivative [Line Items]
Liability Derivatives	$ (888)	$ (194)