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Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Aug. 01, 2015	Aug. 02, 2014	Aug. 01, 2015	Aug. 02, 2014	Jan. 31, 2015
Income Tax Disclosure [Abstract]
Income tax expense	$ 687,000	$ 812,000	$ 1,158,000	$ 1,261,000
Income tax expense (benefit) related to prior year's state taxes			(135,000)	$ (100,000)
Cumulative unrecognized tax benefits	$ 643,000		643,000		$ 707,000
Developments affecting unrecognized tax benefits			$ 0

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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 increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement.

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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The net amount of all increases and decreases in unrecognized tax benefits for the period.

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