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Earnings (Loss) Per Share of Common Stock | 9 Months Ended
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Jun. 30, 2021
Earnings Per Share [Abstract] |
Earnings (Loss) Per Share of Common Stock | 13. Earnings (Loss) Per Share of Common Stock Basic earnings (loss) per share is computed by dividing net income (loss) attributable to common shares by the weighted average number of common shares outstanding for the period. Diluted earnings (loss) per share is computed by dividing net income (loss) by the weighted-average number of shares of common stock outstanding during the period, increased to include the number of shares of common stock that would have been outstanding had potential dilutive shares of common stock been issued. 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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