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Earnings Per Share | 12 Months Ended
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Sep. 30, 2023
Earnings Per Share [Abstract] |
Earnings Per Share | 11. Earnings Per Share Calculations of net (loss) income per common share were as follows (in thousands, except per share data):
|  | Year Ended September 30, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Net (loss)/income |  | $ | (120,116 | ) |  | $ | (182,678 | ) |  | $ | 16,588 |
Basic weighted average common shares outstanding |  |  | 39,465 |  |  |  | 36,133 |  |  |  | 35,713 |
Add: Incremental shares for: |  |  |  |  |  |  |  |  |
Dilutive effect of warrants |  |  | — |  |  |  | — |  |  |  | 2,543 |
Dilutive effect of restricted stock |  |  | — |  |  |  | — |  |  |  | 587 |
Diluted weighted average common shares outstanding |  |  | 39,465 |  |  |  | 36,133 |  |  |  | 38,843 |
Net (loss)/income per common share attributable to Mesa Air Group: |  |  |  |  |  |  |  |  |
Basic |  | $ | (3.04 | ) |  | $ | (5.06 | ) |  | $ | 0.46 |
Diluted |  | $ | (3.04 | ) |  | $ | (5.06 | ) |  | $ | 0.43 |
Basic (loss) income per common share is computed by dividing net (loss) income attributable to Mesa Air Group by the weighted average number of common shares outstanding during the period. The number of incremental shares from the assumed issuance of shares relating to restricted stock and exercise of warrants (excluding warrants with a nominal conversion price) is calculated by applying the treasury stock method. Share-based awards and warrants whose impact is considered to be anti-dilutive under the treasury stock method were excluded from the diluted net (loss) income per share calculation. In loss periods, these incremental shares are excluded from the calculation of diluted loss per share, as the inclusion of unvested restricted stock and warrants would have an anti-dilutive effect. The following number of weighted-average potentially dilutive shares (in thousands) were excluded from the calculation of diluted net (loss) income per share because the effect of including such potentially dilutive shares would have been anti-dilutive:
|  | Year Ended September 30, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Warrants |  |  | — |  |  |  | 758 |  |  |  |
Restricted stock |  |  | — |  |  |  | 106 |  |  |  |
|  |  | — |  |  |  | 864 |  |  |  | — |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//260/tableOfContent Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-3 + Details
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