Segment Information - Revenue by Product Line (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 25, 2020	Oct. 31, 2021	Oct. 25, 2020
Revenue from External Customer [Line Items]
Net sales	$ 194,932	$ 154,082	$ 550,308	$ 430,444
Signal Integrity
Revenue from External Customer [Line Items]
Net sales	75,405	61,553	215,187	193,127
Wireless and Sensing
Revenue from External Customer [Line Items]
Net sales	63,123	51,145	184,223	122,933
Protection
Revenue from External Customer [Line Items]
Net sales	$ 56,404	$ 41,384	$ 150,898	$ 114,384
Net sales | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
Net sales | Signal Integrity | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk, percentage	39.00%	40.00%	40.00%	44.00%
Net sales | Wireless and Sensing | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk, percentage	32.00%	33.00%	33.00%	29.00%
Net sales | Protection | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk, percentage	29.00%	27.00%	27.00%	27.00%