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Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended			9 Months Ended
	Nov. 02, 2019	Aug. 03, 2019	Oct. 27, 2018	Nov. 02, 2019	Oct. 27, 2018	Jan. 31, 2019
Income Tax Disclosure [Abstract]
Income tax expense	$ (247,000)		$ 407,000	$ 182,000	$ 1,046,000
Income tax benefit from windfall of stock		$ 306,000	18,000	251,000	78,000
Expiration of the statue of limitations on previously uncertain tax positions			$ 98,000	359,000	$ 210,000
Cumulative unrecognized tax benefits	360,000			$ 360,000		$ 618,000
Changes to 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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-Topic 280
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