Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 28, 2017	Jan. 28, 2017
Income Tax Disclosure [Abstract]
Valuation allowance of deferred tax assets	$ 32,110	$ 27,758
Valuation allowance increased by non-cash charge to income tax expense	4,352
Unrecognized tax benefits related to uncertain income tax positions	788
Unrecognized tax benefits related to uncertain income tax position accrued interest and penalties	361
Recognized liabilities for unrecognized tax benefits that impact effective tax rate	570
Gross unrecognized tax benefits decrease for uncertain tax positions	392
Approximate gross unrecognized tax benefit that would impact the effective tax rate	$ 277