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Income Taxes - Reconciliation of Federal Statutory Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 03, 2018	Oct. 28, 2017	Jul. 29, 2017	Apr. 29, 2017	Jan. 28, 2017	Oct. 29, 2016	Jul. 30, 2016	Apr. 30, 2016	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Reconciliation of income tax (benefit) expense computed using the federal statutory rate to the reported income tax (benefit) expense
Statutory rate applied to (income) loss before income taxes									$ (7,924)	$ (6,773)	$ (8,510)
Revaluation of net deferred tax assets due to the Tax Cuts and Jobs Act	$ (1,900)								(1,925)
State income taxes, net of federal benefit									(549)	(903)	(950)
State tax credits									252	226	186
State tax credits - valuation allowance (net of federal benefit)									(79)
Tax exempt interest									24	20	6
General business credits									1,273	1,605	978
Excess compensation											(263)
Excess tax benefits from stock based compensation									70
Other									(68)	(195)	(234)
Total income tax (expense) benefit	$ (4,688)	$ (286)	$ 87	$ (4,039)	$ (2,510)	$ 648	$ 59	$ (4,217)	$ (8,926)	$ (6,020)	$ (8,787)

X

- Definition

Represents the portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to general business credits.

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Represents the portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to state tax credit generated or utilized under enacted tax laws during the period.

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Represents the portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to excess compensation.

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Amount of reasonable estimate for income tax expense (benefit) for remeasurement of deferred tax from change in tax rate pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible equity-based compensation costs.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income (loss) exempt from income taxes.

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