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Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	May 04, 2019	Feb. 02, 2019	Feb. 03, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings		$ (6,441)	$ (32,825)
ASU 2016-02 | Restatement
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings		$ 9,300
Remaining amortization period of deferred gain		7 years
Forecast | ASU 2016-02 | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets	$ 175
Lease liabilities	205
Forecast | ASU 2016-02 | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets	195
Lease liabilities	$ 225

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Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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Present value of lessee's discounted obligation for lease payments from operating lease.

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

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