Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Operating Revenues
Regulated Energy	$ 70,504	$ 70,996	$ 179,897	$ 168,650
Unregulated Energy and other	66,160	54,088	196,123	141,594
Total Operating Revenues	136,664	125,084	376,020	310,244
Operating Expenses
Regulated Energy cost of sales	20,010	24,167	68,241	64,411
Unregulated Energy and other cost of sales	49,393	40,505	149,219	101,260
Operations	36,281	30,013	68,983	62,502
Maintenance	3,619	3,403	7,211	6,634
Gain From A Settlement	(130)	(130)	(130)	(130)
Depreciation and amortization	9,839	9,094	19,543	17,906
Other taxes	4,404	3,971	9,299	8,501
Total Operating Expenses	123,416	111,023	322,366	261,084
Operating Income	13,248	14,061	53,654	49,160
Other expense, net	(262)	(1,002)	(194)	(1,703)
Interest charges	3,881	3,073	7,545	5,811
Income Before Income Taxes	9,105	9,986	45,915	41,646
Income taxes	2,718	3,940	12,674	16,456
Net Income	$ 6,387	$ 6,046	$ 33,241	$ 25,190
Weighted Average Common Shares Outstanding:
Basic (shares)	16,369,641	16,340,665	16,360,540	16,329,009
Diluted (shares)	16,417,082	16,382,207	16,410,061	16,373,038
Earnings Per Share of Common Stock:
Basic (in dollars per share)	$ 0.39	$ 0.37	$ 2.03	$ 1.54
Diluted (in dollars per share)	0.39	0.37	2.03	1.54
Cash Dividends Declared Per Share of Common Stock (in dollars per share)	$ 0.370	$ 0.325	$ 0.695	$ 0.630