Income Taxes - Deferred Tax Benefit (Details) - USD ($) $ in Thousands	Feb. 02, 2019	Feb. 03, 2018
Components of Deferred Tax Assets and Liabilities [Abstract]
Accruals and reserves not currently deductible for tax purposes	$ 5,281	$ 4,220
Inventory capitalization	1,339	1,354
Differences in depreciation lives and methods	(1,382)	(475)
Differences in basis of intangible assets	43	23
Differences in investments and other items	1,432	629
Net operating loss carryforwards	85,138	80,880
Valuation allowance	(91,851)	(86,631)
Net deferred tax liability	$ 0	$ 0