XML 79 R68.htm IDEA: XBRL DOCUMENT
v3.22.2

Net Income per Share - Schedule of Issuable Weighted Average Share Information (Details) - shares | 3 Months Ended
--- | ---
Jun. 24, 2022 | Jun. 25, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Dilutive effect of common stock equivalents (in shares) | 1,768,141 | 1,577,693
Restricted stock units |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Dilutive effect of common stock equivalents (in shares) | 668,259 | 820,221
Performance stock units |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Dilutive effect of common stock equivalents (in shares) | 1,080,201 | 752,235
Employee stock purchase plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Dilutive effect of common stock equivalents (in shares) | 19,681 | 5,237

X
- Definition Weighted Average Number Issuable Shares Outstanding Adjustment + References No definition available. + Details
Name: | algm_WeightedAverageNumberIssuableSharesOutstandingAdjustment
Namespace Prefix: | algm_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |