v3.24.1.1.u2
Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 29, 2024
Mar. 31, 2023
Mar. 25, 2022
Mar. 26, 2021
Income Tax Contingency [Line Items]        
Capitalized research and development costs $ 62,651 $ 30,582    
Deferred income tax, estimated rate benefit 11,091      
Provision for uncertain tax positions 4,980 2,408 $ 2,459 $ 2,554
Unrecognized tax benefits that would impact effective tax rate 4,968 2,392 2,433  
Unrecognized tax benefits, income tax penalties and interest expense 826 39 $ 58  
Unrecognized tax benefits, income tax penalties and interest accrued 906 $ 445    
Research And Development        
Income Tax Contingency [Line Items]        
Tax credit carryforward 290      
Research And Development | Crocus        
Income Tax Contingency [Line Items]        
Tax credit carryforward 351      
Research And Development | Allegro Microsystems, Inc.        
Income Tax Contingency [Line Items]        
Tax credit carryforward 3,000      
Domestic Tax Authority        
Income Tax Contingency [Line Items]        
Operating loss carryforwards 7,707      
Domestic Tax Authority | Crocus        
Income Tax Contingency [Line Items]        
Operating loss carryforwards 36,697      
State and Local Jurisdiction        
Income Tax Contingency [Line Items]        
Operating loss carryforwards 722      
State and Local Jurisdiction | Crocus        
Income Tax Contingency [Line Items]        
Operating loss carryforwards 10,345      
State and Local Jurisdiction | Allegro Microsystems, Inc.        
Income Tax Contingency [Line Items]        
Operating loss carryforwards $ 160