Revenue from Contract with Customers - Net Sales by Product (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 24, 2022	Jun. 25, 2021
Disaggregation of Revenue [Line Items]
Total net sales	$ 217,753	$ 188,142
Power integrated circuits
Disaggregation of Revenue [Line Items]
Total net sales	80,660	66,672
Magnetic sensors
Disaggregation of Revenue [Line Items]
Total net sales	137,050	120,642
Photonics
Disaggregation of Revenue [Line Items]
Total net sales	$ 43	$ 828