For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Revenues and Concentrations of Risk (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Nov. 02, 2019	Nov. 03, 2018	Nov. 02, 2019	Nov. 03, 2018	Feb. 02, 2019
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	$ 4,894	$ 5,842	$ 15,549	$ 18,317
Long-lived tangible assets	511		511		$ 620
Deferred revenue	3,900		3,900		$ 2,200
Revenue recognized	$ 100	$ 200	$ 1,500	$ 2,100
Customer Concentration Risk \| Accounts Receivable \| Three Licensees
Revenues From External Customers And Long Lived Assets [Line Items]
Concentration risk (as a percent)			37.00%
Customer Concentration Risk \| Accounts Receivable \| Two Licensees
Revenues From External Customers And Long Lived Assets [Line Items]
Concentration risk (as a percent)					29.00%
Customer Concentration Risk \| Revenues \| Three Licensees
Revenues From External Customers And Long Lived Assets [Line Items]
Concentration risk (as a percent)		32.00%
Customer Concentration Risk \| Revenues \| Two Licensees
Revenues From External Customers And Long Lived Assets [Line Items]
Concentration risk (as a percent)	29.00%		27.00%	20.00%
U.S. and Canada
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	$ 1,327	$ 1,505	$ 4,049	$ 4,908
Europe
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	851	1,136	2,798	4,358
Middle East, India and Africa
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	636	926	2,107	3,107
Asia/Pacific
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	1,402	1,431	4,345	3,260
Latin America
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	678	$ 844	2,250	$ 2,684
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Long-lived tangible assets	200		200		$ 200
Non-US
Revenues From External Customers And Long Lived Assets [Line Items]
Long-lived tangible assets	$ 300		$ 300		$ 400