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v3.10.0.1

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Operating revenues: |  |  |  |
Operating revenues: | $ 1,280,787 | $ 1,272,548 | $ 3,321,678 | $ 3,278,112
Operating expenses: |  |  |  |
Operation and maintenance: | 996,591 | 973,966 | 2,419,531 | 2,354,456
Purchased natural gas sold | 32,123 | 33,319 | 270,319 | 283,936
Depreciation, depletion and amortization | 55,016 | 52,155 | 161,298 | 155,138
Taxes, other than income | 38,647 | 38,882 | 128,257 | 127,273
Electric fuel and purchased power | 18,406 | 18,906 | 58,901 | 57,544
Total operating expenses | 1,140,783 | 1,117,228 | 3,038,306 | 2,978,347
Operating income | 140,004 | 155,320 | 283,372 | 299,765
Other income | 2,683 | 2,068 | 4,864 | 6,212
Interest expense | 20,955 | 20,909 | 62,202 | 61,978
Income before income taxes | 121,732 | 136,479 | 226,034 | 243,999
Income taxes | 14,363 | 46,930 | 32,629 | 74,406
Income from continuing operations | 107,369 | 89,549 | 193,405 | 169,593
Income (loss) from discontinued operations, net of tax (Note 10) | (118) | (2,198) | 85 | (3,702)
Net income | 107,251 | 87,351 | 193,490 | 165,891
Loss on redemption of preferred stocks | 0 | 0 | 0 | 600
Dividends declared on preferred stocks | 0 | 0 | 0 | 171
Earnings on common stock | $ 107,251 | $ 87,351 | $ 193,490 | $ 165,120
Earnings per common share - basic: |  |  |  |
Earnings before discontinued operations | $ 0.55 | $ 0.46 | $ 0.99 | $ 0.86
Discontinued operations, net of tax | 0 | (0.01) | 0 | (0.01)
Earnings per common share - basic | 0.55 | 0.45 | 0.99 | 0.85
Earnings per common share - diluted: |  |  |  |
Earnings before discontinued operations | 0.55 | 0.46 | 0.99 | 0.86
Discontinued operations, net of tax | 0 | (0.01) | 0 | (0.02)
Earnings per common share - diluted | 0.55 | 0.45 | 0.99 | 0.84
Dividends declared per common share | $ 0.1975 | $ 0.1925 | $ 0.5925 | $ 0.5775
Weighted average common shares outstanding - basic | 196,018 | 195,304 | 195,618 | 195,304
Weighted average common shares outstanding - diluted | 196,265 | 195,783 | 196,104 | 195,922
Regulated operation |  |  |  |
Operating revenues: |  |  |  |
Operating revenues: | $ 200,617 | $ 206,936 | $ 851,761 | $ 866,035
Operating expenses: |  |  |  |
Operation and maintenance: | 82,920 | 80,204 | 252,961 | 237,881
Nonregulated operation |  |  |  |
Operating revenues: |  |  |  |
Operating revenues: | 1,080,170 | 1,065,612 | 2,469,917 | 2,412,077
Operating expenses: |  |  |  |
Operation and maintenance: | $ 913,671 | $ 893,762 | $ 2,166,570 | $ 2,116,575

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