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Summary of Significant Accounting Policies - Concentrations of Credit Risk and Significant Customers (Details)	3 Months Ended			9 Months Ended
	Dec. 25, 2020	Jun. 26, 2020	Dec. 27, 2019	Dec. 25, 2020	Dec. 27, 2019
Revenue Benchmark | Geographic Concentration Risk | Non-US
Concentration Risk [Line Items]
Concentration risk, percentage	85.40%		82.80%	86.10%	81.80%
Revenue Benchmark | Geographic Concentration Risk | Greater China
Concentration Risk [Line Items]
Concentration risk, percentage	28.10%		22.10%	27.90%	20.00%
Revenue Benchmark | Geographic Concentration Risk | Japan
Concentration Risk [Line Items]
Concentration risk, percentage	16.00%		28.80%	17.40%	27.80%
Revenue Benchmark | Geographic Concentration Risk | South Korea
Concentration Risk [Line Items]
Concentration risk, percentage	10.70%			10.50%
Sanken | Trade Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage		33.80%		19.80%
Sanken | Revenue Benchmark | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	16.10%		10.30%	17.40%	10.40%

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