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v3.8.0.1

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Operating revenues: |  |  |
Operating revenues: | $ 976,293 | $ 937,925 |
Operating expenses: |  |  |
Operation and maintenance: | 600,856 | 558,542 |
Purchased natural gas sold | 181,967 | 192,948 |
Depreciation, depletion and amortization | 52,729 | 51,325 |
Taxes, other than income | 48,854 | 47,438 |
Electric fuel and purchased power | 22,511 | 21,886 |
Total operating expenses | 906,917 | 872,139 |
Operating income | 69,376 | 65,786 |
Other income | 582 | 2,343 |
Interest expense | 20,447 | 20,303 |
Income before income taxes | 49,511 | 47,826 |
Income taxes | 7,551 | 12,188 |
Income from continuing operations | 41,960 | 35,638 |
Income from discontinued operations, net of tax (Note 9) | 477 | 1,687 | [1]
Net income | 42,437 | 37,325 |
Dividends declared on preferred stocks | 0 | 171 |
Earnings on common stock | $ 42,437 | $ 37,154 |
Earnings per common share - basic: |  |  |
Earnings before discontinued operations | $ 0.22 | $ 0.18 |
Discontinued operations, net of tax | 0 | 0.01 |
Earnings per common share - basic | 0.22 | 0.19 |
Earnings per common share - diluted: |  |  |
Earnings before discontinued operations | 0.22 | 0.18 |
Discontinued operations, net of tax | 0 | 0.01 |
Earnings per common share - diluted | 0.22 | 0.19 |
Dividends declared per common share | $ 0.1975 | $ 0.1925 |
Weighted average common shares outstanding - basic | 195,304 | 195,304 |
Weighted average common shares outstanding - diluted | 195,982 | 196,023 |
Regulated operations [Member] |  |  |
Operating revenues: |  |  |
Operating revenues: | $ 424,459 | $ 433,614 |
Operating expenses: |  |  |
Operation and maintenance: | 86,112 | 79,548 |
Nonregulated operations [Member] |  |  |
Operating revenues: |  |  |
Operating revenues: | 551,834 | 504,311 |
Operating expenses: |  |  |
Operation and maintenance: | $ 514,744 | $ 478,994 |
[1] | Includes an elimination for the presentation of income tax adjustments between continuing and discontinued operations.

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- Definition All taxes not related to income of the entity or excise or sales taxes levied on the revenue of the entity that are not reported elsewhere. These taxes could include production, real estate, personal property, and pump tax. + 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=63488584&loc=d3e20235-122688 + Details
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- Definition Amount of operating expense for purchased gas and petroleum of regulated operation. + 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 210.5-03.2(b)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=96947427&loc=d3e1505-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=96947427&loc=d3e1448-109256 + Details
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