Note 14 - Income Taxes (Details) - Net Operating Losses and Tax Credit Carryforwards (USD $) In Thousands, unless otherwise specified	Jan. 31, 2015	Feb. 01, 2014
Operating Loss Carryforwards [Line Items]
Net operating losses	$ 4,146	$ 4,999
Tax credits	9,396	6,642
Domestic Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Net operating losses	11,875
Tax credits	17,728
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Net operating losses	35,879
Tax credits	18,336
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Net operating losses	$ 12,947