Other Charges - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	May 05, 2018	Apr. 29, 2017
Other Charges Net Related To Proxy Context and Proposed Merger and Management and Organizational Changes [Line Items]
Charges related to proxy solicitation for proposed business combination	$ 886
Charges related to Merger		$ 814
Charges related to management and organizational changes	$ 264	$ 3
Orchestra-Premaman S.A., and Certain Other Affiliates of Orchestra
Other Charges Net Related To Proxy Context and Proposed Merger and Management and Organizational Changes [Line Items]
Termination agreement entry date	Jul. 27, 2017