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Note 13 - Stockholders' Equity (Tables)
 12 Months Ended
Feb. 02, 2019
Notes Tables  
Schedule of Common Stock Outstanding Roll Forward [Table Text Block]
   
Common
  
   
Stock
  
         
Shares as of December 31, 2016
    
15,856,927
  
Shares issued under employee stock plans, net of shares withheld in lieu of tax withholding
    
172,758
  
Repurchase of shares
    
(513,725
 )
Shares as of December 30, 2017
    
15,515,960
  
Shares issued under employee stock plans, net of shares withheld in lieu of tax withholding
    
(4,038
 )
Repurchase of shares
    
(528,228
 )
Shares as of February 3, 2018
    
14,983,694
  
Shares issued under employee stock plans, net of shares withheld in lieu of tax withholding
    
207,406
  
Repurchase of shares
    
(237,958
 )
Shares as of February 2, 2019
    
14,953,142