Income Taxes - Carryforwards (Details) $ in Thousands	Jan. 28, 2017 USD ($)
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards and Tax Credit Carryforward	$ 5,952
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	39
California Enterprise Zone [Member] | State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Tax Credit Carryforward, Amount	5,611
Other State Credits [Member] | State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Tax Credit Carryforward, Amount	$ 302