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Earnings (Loss) Per Share of Common Stock (Tables) | 9 Months Ended
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Jun. 30, 2021
Earnings Per Share [Abstract] |
Reconciliation of Numerator and Denominator for Basic and Diluted Earnings (loss) Per Share Calculation | Set forth below is a reconciliation of the numerator and denominator for basic and diluted earnings (loss) per share calculation for the periods indicated:
| Three Months Ended June 30, |  |  | Nine Months Ended June 30, |
| 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Numerator: |  |  |  |  |  |  |  |  |  |  |
Net income (loss) available to common stockholders | $ | 25.2 |  |  | $ | (2.4 | ) |  | $ | 19.5 |  |  | $ | (35.5 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |
Weighted average number of common shares outstanding – basic |  | 105,202,000 |  |  |  | 103,793,000 |  |  |  | 105,177,000 |  |  |  | 103,583,000 |
Basic earnings (loss) per share | $ | 0.24 |  |  | $ | (0.02 | ) |  | $ | 0.19 |  |  | $ | (0.34 | )
Weighted average number of common shares outstanding – diluted |  | 105,947,000 |  |  |  | 103,793,000 |  |  |  | 105,662,000 |  |  |  | 103,583,000 |
Diluted earnings (loss) per share | $ | 0.24 |  |  | $ | (0.02 | ) |  | $ | 0.18 |  |  | $ | (0.34 | )
Other Information: |  |  |  |  |  |  |  |  |  |  |
Weighted average number of anti-dilutive options and restricted stock |  | 6,897,000 |  |  |  | 8,760,000 |  |  |  | 7,468,000 |  |  |  | 8,285,000 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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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