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Common Stock and Stock Compensation (Tables) | 6 Months Ended
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Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Compensation costs included in net income | Our net income includes the following compensation expense (benefit) related to our stock compensation arrangements:
| Three Months Ended March 31, |  | Six Months Ended March 31,
| 2015 |  | 2014 |  | 2015 |  | 2014
| (in thousands)
Gross compensation cost (benefit) | $ | 530 |  |  | $ | 6,990 |  |  | $ | (1,928 | ) |  | $ | 8,197 |
Income tax expense (benefit) | 179 |  |  | (2,444 | ) |  | (855 | ) |  | (2,869 | )
Net compensation expense (benefit) | $ | 709 |  |  | $ | 4,546 |  |  | $ | (2,783 | ) |  | $ | 5,328 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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