CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues
Electric	$ 292,270	$ 287,473	$ 807,415	$ 798,984
Gas	42,798	38,482	245,139	225,991
Total Revenues	335,068	325,955	1,052,554	1,024,975
Operating expenses
Fuel, purchased supply and direct transmission expense (exclusive of depreciation and depletion shown separately below)	108,920	98,659	338,994	311,137
Operating and maintenance	54,654	56,002	160,785	159,317
Administrative and general	28,146	24,946	87,010	79,596
Property and other taxes	46,466	43,572	140,209	138,337
Depreciation and depletion	48,588	47,112	145,705	140,896
Total Operating Expenses	286,774	270,291	872,703	829,283
Operating income	48,294	55,664	179,851	195,692
Interest expense, net	(25,332)	(23,283)	(73,081)	(70,266)
Other income, net	4,157	5,326	11,791	13,932
Income before income taxes	27,119	37,707	118,561	139,358
Income tax benefit (expense)	249	(2,511)	(2,297)	(3,854)
Net Income	$ 27,368	$ 35,196	$ 116,264	$ 135,504
Average Common Shares Outstanding	56,310,526	51,891,557	54,901,161	51,175,345
Basic Earnings per Average Common Share	$ 0.48	$ 0.68	$ 2.12	$ 2.65
Diluted Earnings per Average Common Share	0.47	0.68	2.09	2.64
Dividends Declared per Common Share	$ 0.63	$ 0.620	$ 1.89	$ 1.860