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Net Income per Share (Tables) | 3 Months Ended
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Jun. 24, 2022
Earnings Per Share [Abstract] |
Schedule of Computation of Net (Loss) 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.
| Three-Month Period Ended |  |
| June 24, 2022 |  | June 25, 2021 |  |  |  |
Net income attributable to Allegro MicroSystems, Inc. | $ | 10,247 |  |  | $ | 27,669 |  |  |  |  |
Net income attributable to common stockholders | 10,283 |  |  | 27,707 |  |  |  |  |
Basic weighted average shares of common stock | 190,638,135 |  |  | 189,585,381 |  |  |  |  |
Dilutive effect of common stock equivalents | 1,768,141 |  |  | 1,577,693 |  |  |  |  |
Diluted weighted average shares of common stock | 192,406,276 |  |  | 191,163,074 |  |  |  |  |
Basic net income attributable to Allegro MicroSystems, Inc. per share | $ | 0.05 |  |  | $ | 0.15 |  |  |  |  |
Basic net income attributable to common stockholders per share | $ | 0.05 |  |  | $ | 0.15 |  |  |  |  |
Diluted net income attributable to Allegro MicroSystems, Inc. per share | $ | 0.05 |  |  | $ | 0.14 |  |  |  |  |
Diluted net income attributable to common stockholders per share | $ | 0.05 |  |  | $ | 0.14 |  |  |  |  |
Schedule of Issuable Weighted Average Share Information | The following table represents issuable weighted average share information for the respective periods:
| Three-Month Period Ended |  |
| June 24, 2022 |  | June 25, 2021 |  |  |  |
Restricted stock units | 668,259 |  |  | 820,221 |  |  |  |  |
Performance stock units | 1,080,201 |  |  | 752,235 |  |  |  |  |
Employee stock purchase plan | 19,681 |  |  | 5,237 |  |  |  |  |
Total | 1,768,141 |  |  | 1,577,693 |  |  |  |  |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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