Balance Sheet Components - Goodwill (Details) - USD ($)	3 Months Ended	6 Months Ended
Aug. 02, 2020	Jul. 31, 2019	Aug. 02, 2020	Jul. 31, 2019	Feb. 02, 2020
Balance Sheet Components Disclosure [Abstract]
Goodwill	$ 37,584,000		$ 37,584,000		$ 37,584,000
Impairments to goodwill	$ 0	$ 0	$ 0	$ 0

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
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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration