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Summary of Significant Accounting Policies and Concentrations of Risk (Concentrations) (Details) - Customer
12 Months Ended
Apr. 03, 2021
Mar. 28, 2020
Mar. 30, 2019
Concentration Risk [Line Items]      
Percentage of total accounts receivable accounted from Avnet 13.00% 31.00%  
Percentage of net revenues through resale of product from Avnet 43.00% 42.00% 45.00%
Number of end customers accounted for net revenues 0    
Minimum [Member]      
Concentration Risk [Line Items]      
Percentage of higher grade securities investment in debt securities (more than) 95.00%    
Software Revenue, Net | Support Products [Member] | Maximum [Member]      
Concentration Risk [Line Items]      
Concentration Risk, Percentage 1.00%