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Restructuring Charges (Details) (USD $)	3 Months Ended		12 Months Ended
Restructuring Charges (Details) (USD $)	May 02, 2015	May 03, 2014	Feb. 01, 2014	Jan. 31, 2015
Restructuring activity
Restructuring charges	$ 0us-gaap_RestructuringCharges	$ 0us-gaap_RestructuringCharges
Severance, impairment and lease termination costs
Restructuring activity
Restructuring charges			12,400,000
Severance
Restructuring reserve activity
Beginning balance	276,000	4,578,000		4,578,000
Cash payments				(2,952,000)
Foreign currency and other adjustments	(40,000)			(1,350,000)
Ending balance	236,000			276,000
Accrued expenses
Restructuring activity
Restructuring reserve included in accrued expenses	$ 236,000			$ 276,000