Summary Of Significant Accounting Policies (Other Income - Net) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounting Policies [Abstract]
Interest income	$ (754)	$ (944)	$ (1,327)
Interest on regulatory deferrals	(126)	(68)	(89)
Equity-related AFUDC	(6,066)	(4,055)	(2,225)
Net loss on investments	3,378	3,343	488
Other income	(3,109)	(3,301)	(280)
Total	$ (6,677)	$ (5,025)	$ (3,433)