CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenues
Electric	$ 271,727	$ 270,071
Gas	122,755	130,732
Total Revenues	394,482	400,803
Fuel, purchased supply and direct transmission expense (exclusive of depreciation and depletion shown separately below)	135,073	144,513
Operating expenses
Operating and maintenance	52,794	51,797
Administrative and general	31,644	29,055
Property and other taxes	46,850	47,478
Depreciation and depletion	48,905	46,975
Total Operating Expenses	315,266	319,818
Operating income	79,216	80,985
Interest expense, net	(23,716)	(23,510)
Other income, net	4,721	5,574
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	60,221	63,049
Income tax (expense) benefit	(1,111)	22
Net Income	$ 59,110	$ 63,071
Average Common Shares Outstanding	54,096,768	50,631,448
Basic Earnings per Average Common Share	$ 1.09	$ 1.25
Diluted Earnings per Average Common Share	1.08	1.24
Dividends Declared per Common Share	$ 0.630	$ 0.62