Note 6 - Composition of Certain Financial Statement Captions (Details) - Software, Equipment and Leasehold Improvements (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Aug. 02, 2014	Feb. 01, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment balances	$ 72,477	$ 71,665
Less: Accumulated depreciation and amortization	(50,194)	(44,576)
Total software, equipment and leasehold improvements, net	22,283	27,089
Software and Software Development Costs [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (years)	2 years
Property, plant and equipment balances	38,613	38,563
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment balances	21,883	21,147
Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (years)	1 year
Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (years)	5 years
Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (years)	2 years
Property, plant and equipment balances	8,831	8,806
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment balances	$ 3,150	$ 3,149
Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (years)	1 year
Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (years)	6 years