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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 27, 2021
Mar. 28, 2020
Mar. 30, 2019
Income Taxes [Line Items]      
Provision for one-time transition tax liability $ 27,000    
Increase in valuation allowance 200    
Net operating loss carryforwards 300    
Gross unrecognized tax benefits 32,879 $ 36,208 $ 39,746
Gross decrease related to prior year unrecognized tax positions (3,329) (4,153)  
Interest and penalties incurred during period 700 $ 900  
Interested accrued 4,100    
Federal      
Income Taxes [Line Items]      
Net operating loss carryforwards 4,400    
State      
Income Taxes [Line Items]      
Net operating loss carryforwards 12,200    
Research Tax Credit Carryforward | State      
Income Taxes [Line Items]      
Tax credit carryforward $ 12,900