Goodwill and Intangible Assets - Narratives (Details) $ in Thousands	12 Months Ended
	Jan. 29, 2022 USD ($)	Jan. 30, 2021 USD ($)	Jan. 25, 2020 USD ($)	Apr. 25, 2020 USD ($)
Goodwill [Line Items]
Percentage Change in Fair Value Input	1.00%
Goodwill, Excess of Fair Value Above Carrying Value	$ 5,700
Goodwill impairment charge	0	$ 53,264	$ 0
Goodwill	272,485	272,485	325,749
Amortization of intangible assets	17,500	$ 20,600	$ 21,200
Broadband
Goodwill [Line Items]
Goodwill impairment charge	$ 53,300
Goodwill				$ 10,100
Terminal Growth Rate
Goodwill [Line Items]
Indefinite-lived Intangible Asset, Measurement Input		3	3
Terminal Growth Rate | Broadband
Goodwill [Line Items]
Indefinite-lived Intangible Asset, Measurement Input		0.015	0.030
Discount Rate
Goodwill [Line Items]
Indefinite-lived Intangible Asset, Measurement Input	0.105	0.100	0.100
Discount Rate | Broadband
Goodwill [Line Items]
Indefinite-lived Intangible Asset, Measurement Input		0.12	0.10