Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3044-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_CashAndCashEquivalentsAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Summary of Significant Accounting Policies - Concentration of Credit Risk and Significant Customers (Details) $ in Thousands	12 Months Ended
	Feb. 01, 2020 USD ($) customer	Feb. 02, 2019 USD ($)
Cash and cash equivalents
Cash and cash equivalents	$ 52,460	$ 8,327
Money Market Funds
Cash and cash equivalents
Cash and cash equivalents	$ 45,000
Accounts receivable \| Customer concentration risk
Concentration of Credit Risk and Significant Customers
Number of customers \| customer	2
Accounts receivable \| Customer concentration risk \| Customer One and Customer Two
Concentration of Credit Risk and Significant Customers
Concentration risk, percentage	35.00%
Accounts receivable \| Customer concentration risk \| Minimum \| Customer One
Concentration of Credit Risk and Significant Customers
Concentration risk, percentage	10.00%
Accounts receivable \| Customer concentration risk \| Minimum \| Customer Two
Concentration of Credit Risk and Significant Customers
Concentration risk, percentage	10.00%