Summary Of Significant Accounting Policies (Other Income - Net) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Accounting Policies [Abstract]
Interest income	$ (274)	$ (258)
Interest on regulatory deferrals	(44)	(13)
Equity-related AFUDC	(2,034)	(1,391)
Net loss on investments	40	398
Other income	(239)	(881)
Total	$ (2,551)	$ (2,145)