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Note 2 - Cash, Cash Equivalents and Marketable Securities - Schedule of Cash, Cash Equivalents and Marketable Securities (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jul. 29, 2017
Jan. 28, 2017
Jul. 30, 2016
Jan. 30, 2016
Book Value $ 1,363 $ 8,501    
Net Unrealized Gains (Losses) 2 (5)    
Fair Value 1,365 8,496    
Fair value - cash on hand 65,831 62,710    
Cash and cash equivalents 65,912 66,425 $ 68,353 $ 63,790
Short-term marketable securities 1,284 4,781    
Total cash, cash equivalents and marketable securities 67,196 71,206    
UNITED STATES        
Fair value - cash on hand 3,756 9,378    
Overseas [Member]        
Fair value - cash on hand 62,075 53,332    
Money Market Funds [Member]        
Book Value 81 3,715    
Net Unrealized Gains (Losses)    
Fair Value 81 3,715    
Corporate Bond Securities [Member]        
Book Value 3,506    
Net Unrealized Gains (Losses) (1)    
Fair Value 3,505    
Fixed Income Funds [Member]        
Book Value 1,282 1,280    
Net Unrealized Gains (Losses) 2 (4)    
Fair Value $ 1,284 $ 1,276