Summary of Significant Accounting Policies - Potential Common Stock Equivalents Excluded from Computation of Diluted Earning Per Share (Details) - $ / shares shares in Thousands	12 Months Ended
Feb. 02, 2019	Feb. 03, 2018	Jan. 28, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti dilutive shares	497	134	439
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti dilutive shares	942	1,196	1,162
Range of exercise prices of such options, minimum	$ 2.25	$ 1.85	$ 4.49
Range of exercise prices of such options, maximum	$ 7.02	$ 7.52	$ 7.52
RSUs (time-vested)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti dilutive shares	754	732	370
Restricted and deferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti dilutive shares	75	63	8

Antidilutive securities excluded from computation of earnings per share exercise price range lower limit.

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- Definition

Antidilutive securities excluded from computation of earnings per share exercise price range upper limit.

+ References

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

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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