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Net Income (Loss) per Share | 12 Months Ended
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Sep. 30, 2023
Earnings Per Share [Abstract] |
Net (Loss) Income per Share | 18. Net Income (Loss) per Share The calculations of basic and diluted net income (loss) per share and basic and diluted weighted average shares outstanding are as follows for the fiscal years ended September 30, 2023, 2022 and 2021 (in thousands, except per share data):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended September 30,
​ |  | 2023 |  | 2022 |  | 2021
Loss from continuing operations | ​ | $ | (12,883) | ​ | $ | (11,286) | ​ | $ | (28,869)
Income (loss) from discontinued operations, net of tax | ​ |  | (1,374) | ​ |  | 2,144,145 | ​ |  | 139,616
Net income (loss) | ​ | ​ | (14,257) | ​ | ​ | 2,132,859 | ​ | ​ | 110,747
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average common shares outstanding used in computing basic income (loss) per share | ​ |  | 66,253 | ​ |  | 74,897 | ​ |  | 74,229
Dilutive restricted stock units | ​ |  | — | ​ |  | — | ​ |  | 226
Weighted average common shares outstanding used in computing basic and diluted income (loss) per share | ​ |  | 66,253 | ​ |  | 74,897 | ​ |  | 74,455
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic net income (loss) per share: | ​ |  |  | ​ |  |  | ​ |  |
Loss from continuing operations | ​ | $ | (0.19) | ​ | $ | (0.15) | ​ | $ | (0.39)
Income (loss) from discontinued operations, net of tax | ​ |  | (0.02) | ​ |  | 28.63 | ​ |  | 1.88
Basic net income (loss) per share | ​ | $ | (0.22) | ​ | $ | 28.48 | ​ | $ | 1.49
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Diluted net income (loss) per share: | ​ |  |  | ​ |  |  | ​ |  |
Loss from continuing operations | ​ | $ | (0.19) | ​ | $ | (0.15) | ​ | $ | (0.39)
Income (loss) from discontinued operations, net of tax | ​ |  | (0.02) | ​ |  | 28.63 | ​ |  | 1.88
Diluted net income (loss) per share | ​ | $ | (0.22) | ​ | $ | 28.48 | ​ | $ | 1.49
​ ​ Restricted stock units of 332,029, 64,122 and 24,012, respectively, during fiscal year 2023, 2022 and 2021 were excluded from the computation of diluted earnings per share as their effect would be anti-dilutive under the treasury stock method. ​

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