Derivative Instruments And Hedging Strategies (Recognized Gains (Losses) On Derivative Instruments Designated As Cash Flow Hedges) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax	$ 622	$ 2,724	$ 3,632
Gains (Losses) on derivative instruments designated as cash flow hedges, Other comprehensive income (loss)	731	4,286	(900)
Interest rate swap agreements, ineffective portion, Derivative gains (losses), net	0	(58)	(46)
Derivative Gains (Losses) [Member]
Derivative [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax	0	3,272	0
Interest Expense [Member]
Derivative [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax	0	2,000	2,867
Interest Rate Swap [Member]
Derivative [Line Items]
Interest rate swap agreements, effective portion, Other comprehensive income (loss)	$ 109	$ (1,710)	$ (4,532)