Summary of Significant Accounting Policies (Details 8) $ in Thousands	12 Months Ended
Feb. 02, 2019 USD ($) customer	Feb. 04, 2018 USD ($)	Feb. 03, 2018 USD ($)
Concentration of Credit Risk and Significant Customers
Number of customers \| customer	2
Retained earnings	$ 323,515	$ 100	$ 280,395
Disposal group, including discontinued operation, liabilities, current			$ 2,100
Consolidated accounts receivable \| Customer concentration risk
Concentration of Credit Risk and Significant Customers
Concentration risk, percentage	15.00%

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount classified as liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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