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Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Operating revenues: |  |  |  |
Electric, natural gas distribution and regulated pipeline and energy services | $ 215,472 | $ 226,472 | $ 621,762 | $ 678,775
Nonregulated pipeline and energy services, construction materials and contracting, construction services and other | 770,743 | 726,092 | 1,226,802 | 1,174,551
Total operating revenues | 986,215 | 952,564 | 1,848,564 | 1,853,326
Operating expenses: |  |  |  |
Fuel and purchased power | 19,327 | 21,046 | 43,146 | 47,590
Purchased natural gas sold | 66,589 | 82,252 | 267,739 | 322,329
Cost of crude oil | 44,781 | 0 | 47,051 | 0
Operation and maintenance: |  |  |  |
Electric, natural gas distribution and regulated pipeline and energy services | 70,370 | 65,348 | 139,011 | 131,197
Nonregulated pipeline and energy services, construction materials and contracting, construction services and other | 650,188 | 636,096 | 1,077,990 | 1,048,166
Depreciation, depletion and amortization | 54,154 | 50,381 | 107,151 | 100,645
Taxes, other than income | 35,478 | 35,087 | 77,478 | 77,437
Total operating expenses | 940,887 | 890,210 | 1,759,566 | 1,727,364
Operating income | 45,328 | 62,354 | 88,998 | 125,962
Other income | 2,320 | 2,470 | 2,764 | 4,638
Interest expense | 23,790 | 21,484 | 46,919 | 42,431
Income before income taxes | 23,858 | 43,340 | 44,843 | 88,169
Income taxes | 9,801 | 13,894 | 15,626 | 27,696
Income from continuing operations | 14,057 | 29,446 | 29,217 | 60,473
Income (loss) from discontinued operations, net of tax (Note 9) | (251,415) | 23,881 | (576,020) | 48,993
Net income (loss) | (237,358) | 53,327 | (546,803) | 109,466
Net loss attributable to noncontrolling interest | (7,754) | (779) | (11,282) | (1,302)
Dividends declared on preferred stocks | 171 | 171 | 342 | 342
Earnings (loss) on common stock | $ (229,775) | $ 53,935 | $ (535,863) | $ 110,426
Earnings (loss) per common share - basic: |  |  |  |
Earnings before discontinued operations | $ 0.11 | $ 0.16 | $ 0.21 | $ 0.32
Discontinued operations, net of tax | (1.29) | 0.12 | (2.96) | 0.26
Earnings (loss) per common share - basic | (1.18) | 0.28 | (2.75) | 0.58
Earnings (loss) per common share - diluted: |  |  |  |
Earnings before discontinued operations | 0.11 | 0.16 | 0.21 | 0.32
Discontinued operations, net of tax | (1.29) | 0.12 | (2.96) | 0.26
Earnings (loss) per common share - diluted | (1.18) | 0.28 | (2.75) | 0.58
Dividends declared per common share | $ 0.1825 | $ 0.1775 | $ 0.3650 | $ 0.3550
Weighted average common shares outstanding - basic | 194,805 | 192,060 | 194,643 | 190,946
Weighted average common shares outstanding - diluted | 194,838 | 192,659 | 194,675 | 191,543

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- Definition The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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