CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues
Electric	$ 244,625	$ 273,037
Gas	90,630	111,183
Total Revenues	335,255	384,220
Operating Expenses
Cost of revenue	91,272	115,735
Operating, general and administrative	79,005	81,092
Property and other taxes	44,499	44,789
Depreciation and depletion	45,265	45,584
Total Operating Expenses	260,041	287,200
Operating Income	75,214	97,020
Interest Expense, net	(24,334)	(23,790)
Other (Expense) Income, net	(1,982)	1,149
Income Before Income Taxes	48,898	74,379
Income Tax Benefit (Expense)	1,806	(1,573)
Net Income	$ 50,704	$ 72,806
Average Common Shares Outstanding	50,506,794	50,380,839
Basic Earnings per Average Common Share	$ 1.00	$ 1.45
Diluted Earnings per Average Common Share	1.00	1.44
Dividends Declared per Common Share	$ 0.60	$ 0.575