Derivative Financial Instruments (Summary Of Location And Amounts Of Derivative Fair Values In The Consolidated Balance Sheets) (Details) (Non-hedging derivatives [Member], USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Derivative Financial Instruments [Line Items]
Liability Derivatives	$ (628)	$ (278)
Interest Rate Swap Agreements [Member] | Other liabilities [Member]
Derivative Financial Instruments [Line Items]
Liability Derivatives	0	(103)
Equity contracts [Member] | Other liabilities [Member]
Derivative Financial Instruments [Line Items]
Liability Derivatives	$ (628)	$ (175)