Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating revenues:
Operating revenues:	$ 1,737,337	$ 1,416,559
Operating expenses:
Operation and maintenance:	1,104,742	907,897
Purchased natural gas sold	371,015	267,353
Depreciation, depletion and amortization	81,862	80,121
Taxes, other than income	80,890	67,484
Electric fuel and purchased power	24,356	26,361
Total operating expenses	1,662,865	1,349,216
Operating income	74,472	67,343
Other income (expense)	10,868	(2,400)
Interest expense	38,020	25,260
Income before income taxes	47,320	39,683
Income taxes	8,977	7,950
Income from continuing operations	38,343	31,733
Discontinued operations, net of tax	10	30
Net income	$ 38,353	$ 31,763
Earnings per share - basic:
Income from continuing operations	$ 0.19	$ 0.16
Discontinued operations, net of tax	0	0
Earnings per share - basic	0.19	0.16
Earnings per share - diluted:
Income from continuing operations	0.19	0.16
Discontinued operations, net of tax	0	0
Earnings per share - diluted	$ 0.19	$ 0.16
Weighted average common shares outstanding - basic	203,624	203,351
Weighted average common shares outstanding - diluted	203,910	203,391
Regulated operation
Operating revenues:
Operating revenues:	$ 673,757	$ 553,456
Operating expenses:
Operation and maintenance:	101,866	97,665
Income from continuing operations	64,294	55,549
Nonregulated operation
Operating revenues:
Operating revenues:	1,063,580	863,103
Operating expenses:
Operation and maintenance:	1,002,876	810,232
Income from continuing operations	$ (25,951)	$ (23,816)