Note 5 - Supplemental Financial Information - Software, Equipment and Leasehold Improvements (Details) - USD ($) $ in Thousands	12 Months Ended
Feb. 03, 2018	Jan. 28, 2017
Property, plant, and equipment, gross	$ 76,702	$ 85,808
Less: Accumulated depreciation and amortization	(70,524)	(67,285)
Total software, equipment and leasehold improvements, net	6,178	18,523
Less: Assets held for sale	(1,839)	(7,265)
Software, equipment and leasehold improvements, net	$ 4,339	11,258
Minimum [Member]
Property, Plant and Equipment, Useful Life	1 year
Maximum [Member]
Property, Plant and Equipment, Useful Life	5 years
Software and Software Development Costs [Member]
Property, Plant and Equipment, Useful Life
Property, plant, and equipment, gross	$ 44,005	49,915
Software and Software Development Costs [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life	3 years
Software and Software Development Costs [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life	5 years
Mask Sets [Member]
Property, Plant and Equipment, Useful Life	3 years
Property, plant, and equipment, gross	$ 14,207	18,209
Equipment [Member]
Property, Plant and Equipment, Useful Life	3 years
Property, plant, and equipment, gross	$ 8,113	7,719
Office Equipment [Member]
Property, Plant and Equipment, Useful Life
Property, plant, and equipment, gross	$ 8,196	7,857
Office Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life	3 years
Office Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life	5 years
Leasehold Improvements [Member]
Property, Plant and Equipment, Useful Life
Property, plant, and equipment, gross	$ 2,181	$ 2,108
Leasehold Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life	1 year
Leasehold Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life	5 years

Amount after accumulated depreciation, depletion and amortization of physical assets, including assets held for sale.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business 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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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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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.

+ References

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