New Accounting Pronouncement (Details) - USD ($) $ in Thousands	3 Months Ended
	May 05, 2018	Feb. 03, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accumulated deficit	$ 53,008	$ 50,542
Deferred revenue	4,200	5,100
Revenue recognized	900
Accrued revenue	500	$ 400
Accrued revenue recognized	200
Aggregate minimum licensing revenue	$ 65,800
Conractual Rights On Revenue Recognized Period	20 years
ASU 2014-09 | Adjustment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accumulated deficit	$ 300
Revenue	$ 200