Other Charges, Net - Summary of Net Charges Incurred in Proxy Solicitation and Proposed Merger and Management and Organizational Changes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 03, 2018	Oct. 28, 2017	Nov. 03, 2018	Oct. 28, 2017
Proxy Solicitation and Proposed Merger
Proxy solicitation	$ 83		$ 2,224
Proposed merger		$ 464		$ 1,113
Total proxy solicitation and proposed merger	83	464	2,224	1,113
Management and Organizational Changes
Severance and related benefits	1,252	2,139	2,136	2,136
Consulting fees	490	497	538	497
Total management and organizational changes	1,742	2,636	2,674	2,633
Total other charges, net	$ 1,825	$ 3,100	$ 4,898	$ 3,746