Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Operating Revenues
Electric	$ 82,838	$ 78,940	$ 183,814	$ 168,909
Nonelectric	129,551	132,461	246,529	262,382
Total Operating Revenues	212,389	211,401	430,343	431,291
Operating Expenses
Production Fuel - Electric	15,603	12,455	33,556	27,879
Purchased Power - Electric System Use	11,245	12,328	27,884	26,486
Electric Operation and Maintenance Expenses	35,805	32,407	68,252	62,420
Asset Impairment Charge - Electric				432
Cost of Goods Sold - Nonelectric (excludes depreciation; included below)	103,937	108,426	195,999	218,722
Other Nonelectric Expenses	12,176	12,979	25,954	26,881
Depreciation and Amortization	14,835	14,890	29,755	29,683
Property Taxes - Electric	3,009	2,670	5,925	5,287
Total Operating Expenses	196,610	196,155	387,325	397,790
Operating Income	15,779	15,246	43,018	33,501
Interest Charges	6,877	8,472	13,857	17,066
Other Income	696	644	1,557	1,626
Income from Continuing Operations Before Income Taxes	9,598	7,418	30,718	18,061
Income Taxes - Continuing Operations	2,094	517	7,980	985
Net Income from Continuing Operations	7,504	6,901	22,738	17,076
Discontinued Operations
Income - net of Income Tax Expense (Benefit) of $131, $3,093, ($75) and $3,506 for the respective periods	197	3,657	116	3,814
Impairment Loss - net of Income Tax (Benefit) of $0, ($18,114), $0 and ($18,114) for the respective periods		(27,459)		(27,459)
(Loss) Gain on Disposition - net of Income Tax (Benefit) Expense of $0, ($35), $6, and ($169) for the respective periods		(455)	210	(3,544)
Net Income (Loss) from Discontinued Operations	197	(24,257)	326	(27,189)
Net Income (Loss)	7,701	(17,356)	23,064	(10,113)
Preferred Dividend Requirements and Other Adjustments		184	513	368
Earnings (Loss) Available for Common Shares	$ 7,701	$ (17,540)	$ 22,551	$ (10,481)
Average Number of Common Shares Outstanding-Basic	36,170,353	36,031,447	36,122,742	36,013,313
Average Number of Common Shares Outstanding-Diluted	36,373,606	36,222,944	36,325,527	36,204,810
Basic Earnings (Loss) Per Common Share:
Continuing Operations (net of preferred dividend requirement and other adjustments)	$ 0.21	$ 0.19	$ 0.61	$ 0.46
Discontinued Operations		$ (0.68)	$ 0.01	$ (0.75)
Earnings Per Share, Basic, Total	$ 0.21	$ (0.49)	$ 0.62	$ (0.29)
Diluted Earnings (Loss) Per Common Share:
Continuing Operations (net of preferred dividend requirement and other adjustments)	$ 0.21	$ 0.19	$ 0.61	$ 0.46
Discontinued Operations		$ (0.67)	$ 0.01	$ (0.75)
Earnings Per Share, Diluted, Total	$ 0.21	$ (0.48)	$ 0.62	$ (0.29)
Dividends Declared Per Common Share	$ 0.2975	$ 0.2975	$ 0.5950	$ 0.5950