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Earnings per share | 12 Months Ended
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Sep. 30, 2020
Earnings Per Share [Abstract] |
Earnings per share | Earnings per share The weighted average number of shares outstanding used to compute earnings per share was as follows:
| Year ended September 30,
(in thousands) | 2020 |  | 2019 |  | 2018
Weighted average shares outstanding | 63,062 |  |  | 64,498 |  |  | 65,501 |
Dilutive effect of unvested restricted stock awards | 260 |  |  | 322 |  |  | 431 |
Denominator for diluted earnings per share | 63,322 |  |  | 64,820 |  |  | 65,932 |
For the years ended September 30, 2020, 2019 and 2018, we excluded approximately 215,000, 10,000 and 5,000 unvested restricted stock units, respectively, from the calculation of diluted earnings per share as the effect of including them, was anti-dilutive.

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