Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Operating Revenues
Regulated Energy	$ 97,654	$ 89,216
Unregulated Energy and other	87,506	57,080
Total Operating Revenues	185,160	146,296
Operating Expenses
Regulated Energy cost of sales	40,244	34,905
Unregulated Energy and other cost of sales	60,754	34,024
Operations	32,913	27,159
Maintenance	3,231	2,479
Depreciation and amortization	8,812	7,503
Other taxes	4,530	3,846
Total Operating Expenses	150,484	109,916
Operating Income	34,676	36,380
Other expense, net	(277)	(34)
Interest charges	2,739	2,650
Income Before Income Taxes	31,660	33,696
Income taxes	12,516	13,329
Net Income	$ 19,144	$ 20,367
Weighted Average Common Shares Outstanding:
Basic (shares)	16,317,224	15,286,842
Diluted (shares)	16,363,796	15,331,912
Earnings Per Share of Common Stock:
Basic (in dollars per share)	$ 1.17	$ 1.33
Diluted (in dollars per share)	1.17	1.33
Cash Dividends Declared Per Share of Common Stock (in dollars per share)	$ 0.305	$ 0.2875