Income Taxes - Liability For Uncertain Tax Positions (Details) - USD ($) $ in Thousands	Oct. 29, 2017	Jan. 29, 2017
Income Tax Contingency [Line Items]
Liability for UTP	$ 11,052	$ 11,452
Non-current deferred tax asset [Member]
Income Tax Contingency [Line Items]
Liability for UTP	9,782	9,309
Other long-term liabilities [Member]
Income Tax Contingency [Line Items]
Liability for UTP	$ 1,270	$ 2,143