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Net Income per Share (Tables) | 12 Months Ended
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Mar. 29, 2024
Earnings Per Share [Abstract] |
Schedule of Computation of Net Income per Share and Unaudited Pro Forma Net Income per Share | The following table sets forth the basic and diluted net income attributable to Allegro MicroSystems, Inc. per share.
|  | Fiscal Year Ended |
|  | March 29, 2024 |  |  | March 31, 2023 |  |  | March 25, 2022 |
Net income attributable to Allegro MicroSystems, Inc. |  | $ | 152,697 |  |  | $ | 187,357 |  |  | $ | 119,407 |
Basic weighted average common shares |  |  | 192,573,169 |  |  |  | 191,197,452 |  |  |  | 189,748,427 |
Dilutive effect of common stock equivalents |  |  | 2,101,183 |  |  |  | 2,490,650 |  |  |  | 2,062,778 |
Diluted weighted average common shares |  |  | 194,674,352 |  |  |  | 193,688,102 |  |  |  | 191,811,205 |
Basic net income per common share attributable to Allegro MicroSystems, Inc. stockholders |  | $ | 0.79 |  |  | $ | 0.98 |  |  | $ | 0.63 |
Diluted net income per common share attributable to Allegro MicroSystems, Inc. stockholders |  | $ | 0.78 |  |  | $ | 0.97 |  |  | $ | 0.62 |
Schedule of Anti Dilutive Securities Excluded | The computed net income per share for the fiscal years ended March 29, 2024, March 31, 2023 and March 25, 2022 does not assume conversion of securities that would have an antidilutive effect on income per share. The following represents contingently issuable shares excluded from the computation of net income per share, as such shares would have an antidilutive effect:
|  | Fiscal Year Ended |
|  | March 29, 2024 |  |  | March 31, 2023 |  |  | March 25, 2022 |
RSUs |  |  | 40,257 |  |  |  | 17,586 |  |  |  | — |
PSUs |  |  | 129,837 |  |  |  | — |  |  |  | — |
ESPP |  |  | — |  |  |  | — |  |  |  | 3,622 |
Total |  |  | 170,094 |  |  |  | 17,586 |  |  |  | 3,622 |
Schedule of Issuable Weighted Average Share Information | The following represents issued and issuable weighted average share information underlying our outstanding RSUs, PSUs and participation in the ESPP for the respective periods:
|  | Fiscal Year Ended |
|  | March 29, 2024 |  |  | March 31, 2023 |  |  | March 25, 2022 |
RSUs |  |  | 888,811 |  |  |  | 1,039,547 |  |  |  | 1,066,406 |
PSUs |  |  | 1,210,124 |  |  |  | 1,435,883 |  |  |  | 996,372 |
ESPP |  |  | 2,248 |  |  |  | 15,220 |  |  |  | — |
Total |  |  | 2,101,183 |  |  |  | 2,490,650 |  |  |  | 2,062,778 |

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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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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