CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues
Electric	$ 234,511	$ 210,092
Gas	135,212	102,518
Other	0	410
Total Revenues	369,723	313,020
Operating Expenses
Cost of sales	167,428	132,196
Operating, general and administrative	72,082	68,837
Property and other taxes	28,545	25,759
Depreciation	30,318	29,218
Total Operating Expenses	298,373	256,010
Operating Income	71,350	57,010
Interest Expense, net	(19,966)	(16,779)
Other Income	2,189	2,715
Income Before Income Taxes	53,573	42,946
Income Tax Expense	(7,993)	(5,044)
Net Income (Loss)	$ 45,580	$ 37,902
Average Common Shares Outstanding	38,855,779	37,384,429
Basic Earnings per Average Common Share	$ 1.17	$ 1.01
Diluted Earnings per Average Common Share	$ 1.17	$ 1.01
Dividends Declared per Common Share	$ 0.40	$ 0.38