The previous amount of loss from reductions in inventory sold.

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The percentage of net revenues that is attributable to product sales.

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The accrual percentage for potential returns at the time of the sale.

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement.

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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Note 1 - Organization and Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 03, 2018	Oct. 28, 2017	Jul. 29, 2017	Apr. 29, 2017	Jan. 28, 2017	Oct. 29, 2016	Jul. 30, 2016	Apr. 30, 2016	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016	Jan. 29, 2017
Restructuring and Related Costs, Incurred Cost, Total									$ 9,300	$ 0	$ 100
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities									0	0	0
Available-for-sale Securities, Total	$ 0								0
Allowance for Doubtful Accounts Receivable, Ending Balance	$ 2,000				$ 1,600				2,000	1,600
Inventory Write-down									4,919	2,004	3,157
Inventory Sold, Previously Written Down									$ 500	$ 300	$ 900
Percentage of Net Revenue Products									97.00%	97.00%	99.00%
Percentage of Potential Returns Accrued Upon Sale	100.00%								100.00%
Revenues, Total	$ 26,537	$ 33,862	$ 39,508	$ 39,564	42,724	$ 62,729	$ 61,316	$ 53,775	$ 65,905	$ 134,407	$ 125,751
Advertising Expense									300	200	200
Accounting Standards Update 2016-09 [Member] \| Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption				$ 4,600
Accounting Standards Update 2016-09 [Member] \| Additional Paid-in Capital [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption												$ 100
Interest and Other Income, Net [Member]
Foreign Currency Transaction Gain (Loss), Realized									(2,500)	(100)	(200)
Accounts Payable and Accrued Liabilities [Member]
Deferred Revenue	$ 400				$ 400				400	400
Membership [Member]
Revenues, Total									$ 2,400	$ 1,900	$ 1,900
Minimum [Member]
Property, Plant and Equipment, Useful Life									1 year
Finite-Lived Intangible Asset, Useful Life									3 years
Minimum [Member] \| Purchased IP [Member]
Finite-Lived Intangible Asset, Useful Life									2 years
Maximum [Member]
Property, Plant and Equipment, Useful Life									5 years
Finite-Lived Intangible Asset, Useful Life									10 years
Maximum [Member] \| Purchased IP [Member]
Finite-Lived Intangible Asset, Useful Life									3 years