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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
OPERATING REVENUES |  |  |
Utility |  | $ 199,965 | $ 209,787
Nonutility |  | 611,802 | 495,518
Total operating revenues |  | 811,767 | 705,305
Gas purchases: |  |  |
Gas purchases - Utility |  | 87,649 | 77,602
Gas purchases - Nonutility |  | 535,383 | 445,084
Gas purchases - Related parties |  | 2,185 | 2,149
Operation and maintenance |  | 60,102 | 54,160
Regulatory rider expenses |  | 12,632 | 11,769
Depreciation and amortization |  | 21,832 | 21,854
Energy and other taxes |  |  | 16,491
Taxes, Other |  | 3,241 |
Total operating expenses |  | 723,024 | 629,109
OPERATING INCOME |  | 88,743 | 76,196
Other income, net |  | 869 | 5,976
Interest expense, net of capitalized interest |  | 13,486 | 11,905
INCOME BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF AFFILIATES |  | 76,126 | 70,267
Income tax benefit |  | (6,961) | (50,168)
Equity in earnings of affiliates |  | 3,161 | 3,264
NET INCOME |  | $ 86,248 | $ 123,699
EARNINGS PER COMMON SHARE |  |  |
Basic (usd per share) |  | $ 0.97 | $ 1.42
Diluted (usd per share) | [1] | $ 0.97 | $ 1.42
WEIGHTED AVERAGE SHARES OUTSTANDING |  |  |
Basic (in shares) |  | 88,547 | 86,996
Diluted (in shares) |  | 88,946 | 87,347
[1] | There were no anti-dilutive shares excluded from the calculation of diluted earnings per share for fiscal 2019 and 2018.

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