Income Taxes (Details 2) - USD ($) $ in Millions	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016
Operating loss carryforwards
Net operating loss carryforwards	$ 50.2
Operating loss carryforwards that have an unlimited carryforward life	12.7
Valuation allowance	13.9	$ 7.9
Foreign
Operating loss carryforwards
Net operating loss carryforwards	$ 35.4
Foreign | Earliest tax year
Operating loss carryforwards
Fiscal year when operating loss carryforwards will expire	2019
Foreign | Latest tax year
Operating loss carryforwards
Fiscal year when operating loss carryforwards will expire	2027
State
Operating loss carryforwards
Net operating loss carryforwards	$ 2.1
State | Earliest tax year
Operating loss carryforwards
Fiscal year when operating loss carryforwards will expire	2018
State | Latest tax year
Operating loss carryforwards
Fiscal year when operating loss carryforwards will expire	2036