CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
OPERATING REVENUES
Utility	$ 157,773	$ 144,971	$ 913,729	$ 902,880
Nonutility	117,863	119,104	487,030	728,789
Total operating revenues	275,636	264,075	1,400,759	1,631,669
Natural gas purchases:
Related parties	1,729	1,870	5,407	5,467
Operation and maintenance	104,378	94,213	306,040	272,809
Regulatory rider expenses	8,343	6,120	56,761	47,525
Depreciation and amortization	40,907	38,877	121,269	113,650
Total operating expenses	269,700	259,341	1,088,782	1,288,962
OPERATING INCOME	5,936	4,734	311,977	342,707
Other income, net	9,555	5,711	31,316	15,145
Interest expense, net of capitalized interest	31,169	30,119	94,263	89,871
(LOSS) INCOME BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF AFFILIATES	(15,678)	(19,674)	249,030	267,981
Income tax (benefit) provision	(2,764)	(20,505)	54,119	43,059
Equity in earnings of affiliates	1,340	701	3,738	2,778
NET (LOSS) INCOME	$ (11,574)	$ 1,532	$ 198,649	$ 227,700
(LOSS) EARNINGS PER COMMON SHARE
Basic (usd per share)	$ (0.12)	$ 0.02	$ 2.02	$ 2.35
Diluted (usd per share)	$ (0.12)	$ 0.02	$ 2.00	$ 2.33
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic (in shares)	98,983	97,168	98,409	96,849
Diluted (in shares)	98,983	97,886	99,213	97,538
Utility
Natural gas purchases:
Gas purchases - Utility and Nonutility	$ 53,372	$ 42,344	$ 373,839	$ 381,160
Nonutility
Natural gas purchases:
Gas purchases - Utility and Nonutility	$ 60,971	$ 75,917	$ 225,466	$ 468,351