Income Tax (details)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal Statutory Tax Rate	35.00%	35.00%
Current State Income Tax, Net Of Federal Tax Benefit	4.60%	4.80%
Amortization Of Investment And Energy Tax Credits	(0.30%)	(0.30%)
Differences Required To Be Flowed Through By Regulatory Commissions	2.30%	1.50%
Gains On Company And Trust Owned Life Insurance	(0.80%)	(0.70%)
Other - Net	(0.10%)	0.30%
Effective Income Tax Rate	40.70%	40.60%