CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
OPERATING REVENUES
Utility	$ 333,427	$ 293,093
Nonutility	154,934	174,117
Total operating revenues	488,361	467,210
Natural gas purchases:
Related parties	1,718	1,879
Operation and maintenance	88,632	94,439
Regulatory rider expenses	22,476	19,189
Depreciation and amortization	45,329	40,287
Gain on sale of assets	(54,859)	0
Total operating expenses	298,784	331,391
OPERATING INCOME	189,577	135,819
Other income, net	11,617	6,341
Interest expense, net of capitalized interest	33,891	31,473
INCOME BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF AFFILIATES	167,303	110,687
Income tax provision	37,384	22,936
Equity in earnings of affiliates	1,400	1,660
NET INCOME	$ 131,319	$ 89,411
EARNINGS PER COMMON SHARE
Basic (usd per share)	$ 1.32	$ 0.91
Diluted (usd per share)	$ 1.31	$ 0.91
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic (in shares)	99,855	97,869
Diluted (in shares)	100,478	98,563
Utility
Natural gas purchases:
Gas purchases - Utility and Nonutility	$ 127,680	$ 116,120
Nonutility
Natural gas purchases:
Gas purchases - Utility and Nonutility	$ 67,808	$ 59,477