Segment Information - Revenue by Product Line (Details) - USD ($) $ in Thousands	3 Months Ended
	May 02, 2021	Apr. 26, 2020
Revenue from External Customer [Line Items]
Net sales	$ 170,372	$ 132,702
Concentration risk, percentage	100.00%	100.00%
Signal Integrity
Revenue from External Customer [Line Items]
Net sales	$ 66,695	$ 59,929
Wireless and Sensing
Revenue from External Customer [Line Items]
Net sales	58,507	32,958
Protection
Revenue from External Customer [Line Items]
Net sales	$ 45,170	$ 39,815
Net sales
Revenue from External Customer [Line Items]
Concentration risk, percentage	100.00%	100.00%
Net sales | Signal Integrity
Revenue from External Customer [Line Items]
Concentration risk, percentage	39.00%	45.00%
Net sales | Wireless and Sensing
Revenue from External Customer [Line Items]
Concentration risk, percentage	34.00%	25.00%
Net sales | Protection
Revenue from External Customer [Line Items]
Concentration risk, percentage	27.00%	30.00%