Other Charges, Net - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Jul. 31, 2017	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Other Charges Net Related To Management And Organizational Changes And Proposed Business Combination [Line Items]
Net charges related to management and organizational changes		$ 3,714	$ 1,760	$ 4,196
Net reimbursement amount for certain costs incurred in connection with merger agreement		(1,000)
Net charges related to Merger		$ 1,198	$ 3,154	61
Charges (income) related to relocation of facilities				2,695
Charges related to change to retail calendar-based fiscal year				$ 27
Orchestra-Premaman S.A., and Certain Other Affiliates of Orchestra
Other Charges Net Related To Management And Organizational Changes And Proposed Business Combination [Line Items]
Termination agreement entry date		Jul. 27, 2017
Termination Agreement
Other Charges Net Related To Management And Organizational Changes And Proposed Business Combination [Line Items]
Net reimbursement amount for certain costs incurred in connection with merger agreement	$ 1,000
Terminated Ancillary Agreement
Other Charges Net Related To Management And Organizational Changes And Proposed Business Combination [Line Items]
Revenue under consulting service agreements		$ 44