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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, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
Operating revenues: |  |  |  |
Electric, natural gas distribution and pipeline and energy services | $ 184,863 | $ 212,848 | $ 784,399 | $ 964,866
Exploration and production, construction materials and contracting, construction services and other | 988,655 | 939,333 | 2,209,889 | 2,019,877
Total operating revenues | 1,173,518 | 1,152,181 | 2,994,288 | 2,984,743
Operating expenses: |  |  |  |
Fuel and purchased power | 17,634 | 17,357 | 51,247 | 48,784
Purchased natural gas sold | 35,199 | 50,102 | 279,038 | 396,326
Operation and maintenance: |  |  |  |
Electric, natural gas distribution and pipeline and energy services | 67,830 | 69,475 | 188,945 | 207,465
Exploration and production, construction materials and contracting, construction services and other | 793,850 | 767,519 | 1,793,347 | 1,663,927
Depreciation, depletion and amortization | 91,850 | 88,897 | 260,858 | 256,861
Taxes, other than income | 41,090 | 39,410 | 132,017 | 131,591
Write-down of oil and natural gas properties | 160,100 | 0 | 160,100 | 0
Total operating expenses | 1,207,553 | 1,032,760 | 2,865,552 | 2,704,954
Operating income (loss) | (34,035) | 119,421 | 128,736 | 279,789
Earnings from equity method investments | 2,388 | 826 | 4,025 | 2,260
Other income | 1,702 | 1,282 | 4,050 | 5,090
Interest expense | 19,840 | 19,589 | 56,929 | 61,642
Income (loss) before income taxes | (49,785) | 101,940 | 79,882 | 225,497
Income taxes | (20,253) | 37,840 | 24,516 | 73,632
Income (loss) from continuing operations | (29,532) | 64,100 | 55,366 | 151,865
Income (loss) from discontinued operations, net of tax | (139) | (126) | 4,867 | 154
Net income (loss) | (29,671) | 63,974 | 60,233 | 152,019
Dividends declared on preferred stocks | 171 | 171 | 514 | 514
Earnings (loss) on common stock | $ (29,842) | $ 63,803 | $ 59,719 | $ 151,505
Earnings (loss) per common share - basic: |  |  |  |
Earnings (loss) before discontinued operations | $ (0.16) | $ 0.34 | $ 0.29 | $ 0.80
Discontinued operations, net of tax | $ 0.00 | $ 0.00 | $ 0.03 | $ 0.00
Earnings (loss) per share, basic | $ (0.16) | $ 0.34 | $ 0.32 | $ 0.80
Earnings (loss) per common share - diluted: |  |  |  |
Earnings (loss) before discontinued operations | $ (0.16) | $ 0.34 | $ 0.29 | $ 0.80
Discontinued operations, net of tax | $ 0.00 | $ 0.00 | $ 0.03 | $ 0.00
Earnings per common share - diluted | $ (0.16) | $ 0.34 | $ 0.32 | $ 0.80
Dividends declared per common share (in dollars per share) | $ 0.1675 | $ 0.1625 | $ 0.5025 | $ 0.4875
Weighted average common shares outstanding - basic | 188,831 | 188,794 | 188,824 | 188,753
Weighted average common shares outstanding - diluted | 188,831 | 188,797 | 189,029 | 188,760

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