Revenue from Contracts with Customers - Net Sales by Product (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 28, 2025	Mar. 29, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Total net sales	$ 725,006	$ 1,049,367	$ 973,653
Magnetic sensors (“MS”)
Disaggregation of Revenue [Line Items]
Total net sales	474,557	649,869	598,579
Power integrated circuits (“PIC”)
Disaggregation of Revenue [Line Items]
Total net sales	$ 250,449	$ 399,498	$ 375,074