CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues
Electric	$ 186,789	$ 184,838	$ 395,411	$ 388,677
Gas	64,692	58,900	193,904	188,919
Other	325	321	751	636
Total Revenues	251,806	244,059	590,066	578,232
Operating Expenses
Cost of sales	110,407	111,936	272,478	284,763
Operating, general and administrative	69,539	57,126	136,922	115,434
Property and other taxes	20,550	24,984	45,946	47,952
Depreciation	25,066	22,997	50,381	45,872
Total Operating Expenses	225,562	217,043	505,727	494,021
Operating Income	26,244	27,016	84,339	84,211
Interest Expense, net	(16,896)	(16,057)	(34,043)	(33,107)
Other Income	1,106	1,853	1,911	2,606
Income Before Income Taxes	10,454	12,812	52,207	53,710
Income Tax Benefit (Expense)	516	(1,121)	(8,662)	(13,301)
Net Income	$ 10,970	$ 11,691	$ 43,545	$ 40,409
Average Common Shares Outstanding	36,258,104	36,179,133	36,250,049	36,173,947
Basic Earnings per Average Common Share (in dollars per share)	$ 0.30	$ 0.32	$ 1.20	$ 1.12
Diluted Earnings per Average Common Share (in dollars per share)	$ 0.30	$ 0.32	$ 1.19	$ 1.11
Dividends Declared per Average Common Share (in dollars per share)	$ 0.36	$ 0.34	$ 0.72	$ 0.68