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Revenue from Contract with Customers - Net Sales by Core End Market and Application (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 25, 2022	Mar. 26, 2021	Mar. 27, 2020
Disaggregation of Revenue [Line Items]
Total net sales	$ 768,674	$ 591,207	$ 650,089
Automotive
Disaggregation of Revenue [Line Items]
Total net sales	531,564	398,298	395,277
Industrial
Disaggregation of Revenue [Line Items]
Total net sales	133,187	94,872	78,399
Other
Disaggregation of Revenue [Line Items]
Total net sales	103,923	98,037	68,622
Wafer foundry products
Disaggregation of Revenue [Line Items]
Total net sales	0	0	72,370
Distribution of Sanken products
Disaggregation of Revenue [Line Items]
Total net sales	$ 0	$ 0	$ 35,421

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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