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SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables) | 12 Months Ended
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Sep. 30, 2018
SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) |
Schedule of selected quarterly financial data (unaudited) | (in thousands, except per share amounts)
2018 |  | First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter |  | Total (1)
Operating revenues |  | $ | 564,087 |  | $ | 577,484 |  | $ | 648,872 |  | $ | 696,825 |  | $ | 2,487,268
Operating income (loss) |  |  | 3,520 |  |  | (1,253) |  |  | 6,217 |  |  | 23,118 |  |  | 31,602
Income (loss) from continuing operations |  |  | 500,642 |  |  | (1,633) |  |  | (8,174) |  |  | 2,175 |  |  | 493,010
Net income (loss) |  |  | 500,106 |  |  | (11,879) |  |  | (8,008) |  |  | 2,453 |  |  | 482,672
Basic earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations |  |  | 4.57 |  |  | (0.03) |  |  | (0.08) |  |  | 0.02 |  |  | 4.49
Net income (loss) |  |  | 4.57 |  |  | (0.12) |  |  | (0.08) |  |  | 0.02 |  |  | 4.39
Diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations |  |  | 4.55 |  |  | (0.03) |  |  | (0.08) |  |  | 0.02 |  |  | 4.47
Net income (loss) |  |  | 4.55 |  |  | (0.12) |  |  | (0.08) |  |  | 0.02 |  |  | 4.37
(1)The sum of earnings per share for the four quarters may not equal the total earnings per share for the year due to changes in the average number of common shares outstanding.
2017 |  | First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter |  | Total (1)
Operating revenues |  | $ | 368,590 |  | $ | 405,283 |  | $ | 498,564 |  | $ | 532,304 |  | $ | 1,804,741
Operating loss |  |  | (49,164) |  |  | (65,672) |  |  | (28,028) |  |  | (29,677) |  |  | (172,541)
Loss from continuing operations |  |  | (34,554) |  |  | (48,473) |  |  | (23,125) |  |  | (21,711) |  |  | (127,863)
Net loss |  |  | (35,063) |  |  | (48,818) |  |  | (21,799) |  |  | (22,532) |  |  | (128,212)
Basic earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss from continuing operations |  |  | (0.33) |  |  | (0.45) |  |  | (0.22) |  |  | (0.20) |  |  | (1.20)
Net loss |  |  | (0.33) |  |  | (0.45) |  |  | (0.21) |  |  | (0.21) |  |  | (1.20)
Diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss from continuing operations |  |  | (0.33) |  |  | (0.45) |  |  | (0.22) |  |  | (0.20) |  |  | (1.20)
Net loss |  |  | (0.33) |  |  | (0.45) |  |  | (0.21) |  |  | (0.21) |  |  | (1.20)
| (1) |  | The sum of earnings per share for the four quarters may not equal the total earnings per share for the year due to changes in the average number of common shares outstanding.

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: 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=84173487&loc=d3e1280-108306 + Details
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