Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	4 Months Ended	12 Months Ended
	Jan. 31, 2015	Jan. 28, 2017	Jan. 30, 2016	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Non-cash charge valuation allowance of deferred tax assets		$ 27,758
Increase deferred tax assets excluding state net operating loss carryforwards		980
Unrecognized tax benefits related to uncertain income tax positions		323
Unrecognized tax benefits related to uncertain income tax position accrued interest and penalties	$ (29)	(28)	$ (83)	$ (1,391)
Recognized liabilities for unrecognized tax benefits that impact effective tax rate		544
Recoverable income taxes	$ 6,778	4,875	$ 5,859
Gross unrecognized tax benefits decrease for uncertain tax positions		356
Approximate gross unrecognized tax benefit that would impact the effective tax rate		$ 228