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Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Operating revenues: |  |  |  |
Electric, natural gas distribution and pipeline and energy services | $ 211,536 | $ 192,103 | $ 957,769 | $ 843,670
Exploration and production, construction materials and contracting, construction services and other | 1,158,919 | 1,093,679 | 2,549,585 | 2,434,310
Total operating revenues | 1,370,455 | 1,285,782 | 3,507,354 | 3,277,980
Operating expenses: |  |  |  |
Fuel and purchased power | 19,236 | 19,983 | 66,826 | 59,760
Purchased natural gas sold | 47,718 | 35,826 | 377,024 | 305,268
Operation and maintenance: |  |  |  |
Electric, natural gas distribution and pipeline and energy services | 79,848 | 64,078 | 225,180 | 206,808
Exploration and production, construction materials and contracting, construction services and other | 897,887 | 870,252 | 2,002,884 | 1,925,762
Depreciation, depletion and amortization | 103,497 | 99,966 | 306,180 | 288,816
Taxes, other than income | 45,504 | 45,804 | 150,657 | 145,784
Total operating expenses | 1,193,690 | 1,135,909 | 3,128,751 | 2,932,198
Operating income | 176,765 | 149,873 | 378,603 | 345,782
Loss from equity method investments | (97) | (61) | (343) | (380)
Other income | 2,644 | 2,326 | 7,552 | 5,003
Interest expense | 22,425 | 21,012 | 64,912 | 63,312
Income before income taxes | 156,887 | 131,126 | 320,900 | 287,093
Income taxes | 54,769 | 46,576 | 109,818 | 99,559
Income from continuing operations | 102,118 | 84,550 | 211,082 | 187,534
Income (loss) from discontinued operations, net of tax (Note 12) | 3 | (118) | 506 | (254)
Net income | 102,121 | 84,432 | 211,588 | 187,280
Net loss attributable to noncontrolling interest | (1,088) | (24) | (2,390) | (204)
Dividends declared on preferred stocks | 171 | 171 | 514 | 514
Earnings on common stock | $ 103,038 | $ 84,285 | $ 213,464 | $ 186,970
Earnings per common share - basic: |  |  |  |
Earnings before discontinued operations | $ 0.53 | $ 0.45 | $ 1.11 | $ 0.99
Discontinued operations, net of tax | $ 0.00 | $ 0.00 | $ 0.00 | $ 0.00
Earnings per common share - basic | $ 0.53 | $ 0.45 | $ 1.11 | $ 0.99
Earnings per common share - diluted: |  |  |  |
Earnings before discontinued operations | $ 0.53 | $ 0.44 | $ 1.11 | $ 0.99
Discontinued operations, net of tax | $ 0.00 | $ 0.00 | $ 0.00 | $ 0.00
Earnings per common share - diluted | $ 0.53 | $ 0.44 | $ 1.11 | $ 0.99
Dividends declared per common share | $ 0.1775 | $ 0.1725 | $ 0.5325 | $ 0.5175
Weighted average common shares outstanding - basic | 193,949 | 188,831 | 191,958 | 188,831
Weighted average common shares outstanding - diluted | 194,300 | 189,638 | 192,307 | 189,634

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