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Quarterly Data (Unaudited) | 12 Months Ended
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Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract] |
Supplementary financial information-quarterly data (Unaudited) | Supplementary Financial Information Quarterly Data (Unaudited) The following unaudited information shows selected items by quarter for the years 2015 and 2014:
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter |
| (In thousands, except per share amounts)
2015 |  |  |  |
Operating revenues | $ | 862,349 |  | $ | 986,215 |  | $ | 1,280,500 |  | $ | 1,062,485 |
Operating expenses | 818,680 |  | 940,887 |  | 1,170,757 |  | 1,007,092 |
Operating income | 43,669 |  | 45,328 |  | 109,743 |  | 55,393 |
Income from continuing operations | 15,160 |  | 14,057 |  | 53,400 |  | 32,077 |
Income (loss) from discontinued operations, net of tax | (324,605 | ) | (251,415 | ) | (202,626 | ) | 6,261 |
Net income (loss) attributable to the Company | (305,917 | ) | (229,604 | ) | (139,448 | ) | 52,534 |
Earnings (loss) per common share - basic: |  |  |  |  |  |  |
Earnings before discontinued operations | .10 |  | .11 |  | .32 |  | .24 |
Discontinued operations, net of tax | (1.67 | ) | (1.29 | ) | (1.04 | ) | .03 |
Earnings (loss) per common share - basic | (1.57 | ) | (1.18 | ) | (.72 | ) | .27 |
Earnings (loss) per common share - diluted: |  |  |  |  |  |  |
Earnings before discontinued operations | .10 |  | .11 |  | .32 |  | .24 |
Discontinued operations, net of tax | (1.67 | ) | (1.29 | ) | (1.04 | ) | .03 |
Earnings (loss) per common share - diluted | (1.57 | ) | (1.18 | ) | (.72 | ) | .27 |
Weighted average common shares outstanding: |  |  |  |  |  |  |
Basic | 194,479 |  | 194,805 |  | 195,151 |  | 195,266 |
Diluted | 194,566 |  | 194,838 |  | 195,169 |  | 195,324 |
2014 |  |  |  |  |  |  |  |
Operating revenues | $ | 900,761 |  | $ | 952,564 |  | $ | 1,213,203 |  | $ | 1,048,288 |
Operating expenses | 837,153 |  | 890,210 |  | 1,094,310 |  | 973,720 |
Operating income | 63,608 |  | 62,354 |  | 118,893 |  | 74,568 |
Income from continuing operations | 31,027 |  | 29,446 |  | 63,639 |  | 55,051 |
Income from discontinued operations, net of tax | 25,112 |  | 23,881 |  | 38,482 |  | 27,700 |
Net income attributable to the Company | 56,662 |  | 54,106 |  | 103,209 |  | 84,256 |
Earnings per common share - basic: |  |  |  |  |  |  |  |
Earnings before discontinued operations | .17 |  | .16 |  | .33 |  | .29 |
Discontinued operations, net of tax | .13 |  | .12 |  | .20 |  | .14 |
Earnings per common share - basic | .30 |  | .28 |  | .53 |  | .43 |
Earnings per common share - diluted: |  |  |  |  |  |  |  |
Earnings before discontinued operations | .16 |  | .16 |  | .33 |  | .29 |
Discontinued operations, net of tax | .14 |  | .12 |  | .20 |  | .14 |
Earnings per common share - diluted | .30 |  | .28 |  | .53 |  | .43 |
Weighted average common shares outstanding: |  |  |  |  |  |  |  |
Basic | 189,820 |  | 192,060 |  | 193,949 |  | 194,136 |
Diluted | 190,432 |  | 192,659 |  | 194,300 |  | 194,219 |
Notes:
• | First quarter 2015 reflects a MEPP withdrawal liability of $2.4 million (before tax). For more information, see Note 14.
• | Second quarter 2015 reflects an impairment of coalbed natural gas gathering assets of $3.0 million (before tax). For more information, see Note 1.
• | Third quarter 2015 reflects an impairment of coalbed natural gas gathering assets of $14.1 million (before tax). For more information, see Note 1.
• | Fourth quarter 2014 reflects a MEPP withdrawal liability of approximately $14.0 million (before tax). For more information, see Note 14.
• | 2014 and first quarter 2015 have been restated to present the results of operations of Fidelity as discontinued operations, other than certain general and administrative costs and interest expense which were previously allocated to the former exploration and production segment and do not meet the criteria for income (loss) from discontinued operations.
Certain Company operations are highly seasonal and revenues from and certain expenses for such operations may fluctuate significantly among quarterly periods. Accordingly, quarterly financial information may not be indicative of results for a full year.

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- Definition The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=51655806&loc=d3e765-108305 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=51825399&loc=d3e1280-108306 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=51655806&loc=d3e725-108305 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section G -Subsection 1 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 302 -Paragraph a + Details
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