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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
OPERATING REVENUES |  |
Utility | $ 219,623 | $ 199,965
Nonutility | 395,413 | 611,802
Total operating revenues | 615,036 | 811,767
Gas purchases: |  |
Gas purchases - Related parties | 1,524 | 2,185
Operation and maintenance | 63,345 | 63,343
Regulatory rider expenses | 11,742 | 12,632
Depreciation and amortization | 27,758 | 21,832
Total operating expenses | 513,539 | 723,024
OPERATING INCOME | 101,497 | 88,743
Other income, net | 286 | 869
Interest expense, net of capitalized interest | 16,070 | 13,486
INCOME BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF AFFILIATES | 85,713 | 76,126
Income tax benefit | (259) | (6,961)
Equity in earnings of affiliates | 3,389 | 3,161
NET INCOME | $ 89,361 | $ 86,248
EARNINGS PER COMMON SHARE |  |
Basic (usd per share) | $ 0.97 | $ 0.97
Diluted (usd per share) | $ 0.97 | $ 0.97
WEIGHTED AVERAGE SHARES OUTSTANDING |  |
Basic (in shares) | 91,911 | 88,547
Diluted (in shares) | 92,320 | 88,946
Regulated |  |
Gas purchases: |  |
Gas purchases - Utility and Nonutility | $ 91,814 | $ 87,649
Unregulated |  |
Gas purchases: |  |
Gas purchases - Utility and Nonutility | $ 317,356 | $ 535,383

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