Goodwill and Intangible Assets - Narratives (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 25, 2020	Jul. 27, 2019	Jul. 25, 2020	Jul. 27, 2019	Jan. 25, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill impairment charge			$ 53,264	$ 0
Goodwill	$ 272,485		272,485		$ 325,749
Amortization of intangible assets	$ 5,200	$ 5,300	$ 10,400	$ 10,700

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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