Derivative Financial Instruments (Schedule Of Open Interest Rate Swap Derivative Positions) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Interest Rate Contract Expiration December 2016 [Member]
Derivative [Line Items]
Notional	$ 100
Rate Received	Three Month LIBOR
Rate Paid	0.92%
Expiration	Dec. 01, 2016
Interest Rate Contract Expiration January 2019 [Member]
Derivative [Line Items]
Notional	$ 100
Rate Received	1.76%
Rate Paid	Three Month LIBOR
Expiration	Jan. 01, 2019