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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
OPERATING REVENUES |  |  |  |  |
Utility |  | $ 120,782 | $ 104,538 | $ 622,167 | $ 631,389
Nonutility |  | 314,160 | 438,897 | 1,490,797 | 1,636,394
Total operating revenues |  | 434,942 | 543,435 | 2,112,964 | 2,267,783
Gas purchases: |  |  |  |  |
Gas purchases - Utility |  | 54,861 | 53,080 | 280,627 | 227,268
Gas purchases - Nonutility |  | 289,757 | 422,734 | 1,370,408 | 1,489,041
Gas purchases - Related parties |  | 2,126 | 2,156 | 6,455 | 6,392
Operation and maintenance |  | 62,559 | 68,496 | 185,620 | 179,453
Regulatory rider expenses |  | 4,136 | 5,542 | 32,159 | 36,915
Depreciation and amortization |  | 23,149 | 20,320 | 67,292 | 64,634
Energy and other taxes |  | 2,373 | 7,822 | 8,678 | 45,855
Total operating expenses |  | 438,961 | 580,150 | 1,951,239 | 2,049,558
OPERATING (LOSS) INCOME |  | (4,019) | (36,715) | 161,725 | 218,225
Other income, net |  | 1,829 | 1,731 | 5,456 | 8,735
Interest expense, net of capitalized interest |  | 11,648 | 11,037 | 37,643 | 34,740
(LOSS) INCOME BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF AFFILIATES |  | (13,838) | (46,021) | 129,538 | 192,220
Income tax benefit |  | (1,941) | (28,534) | (11,854) | (47,801)
Equity in earnings of affiliates |  | 3,495 | 3,213 | 10,027 | 9,670
NET (LOSS) INCOME | [1] | $ (8,402) | $ (14,274) | $ 151,419 | $ 249,691
(LOSS) EARNINGS PER COMMON SHARE |  |  |  |  |
Basic (usd per share) |  | $ (0.09) | $ (0.16) | $ 1.70 | $ 2.85
Diluted (usd per share) | [2] | $ (0.09) | $ (0.16) | $ 1.69 | $ 2.84
WEIGHTED AVERAGE SHARES OUTSTANDING |  |  |  |  |
Basic (in shares) |  | 89,600 | 87,888 | 88,995 | 87,493
Diluted (in shares) |  | 89,600 | 87,888 | 89,402 | 87,884
[1] | Includes income tax benefit related to the Tax Act of $844,000 and $57.7 million, for the three and nine months ended June 30, 2018, respectively.
[2] | Since there was a net loss for the three months ended June 30, 2019 and 2018, incremental shares of 409,000 and 402,000, respectively, were not included in the computation of diluted loss per common share, as their effect would have been anti-dilutive.There were no anti-dilutive shares excluded from the calculation of diluted earnings per share during the nine months ended June 30, 2019 and 2018.

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