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Note 18 - Quarterly Financial Information (Unaudited, Presented Without Effect to Assets Available for Sale) (Tables)
 12 Months Ended
Feb. 03, 2018
Notes Tables  
Quarterly Financial Information [Table Text Block]
   
Fiscal Quarters Ended
  
   
February 3,
2018
    
October 28,
2017
    
July 29,
2017
    
April 29,
2017
    
January 28,
2017
    
October 29,
2016
    
July 30,
2016
    
April 30,
2016
  
                                                                 
Net revenue
   $
26,537
     $
33,862
     $
39,508
     $
39,564
     $
42,724
     $
62,729
     $
61,316
     $
53,775
  
Gross profit
    
11,176
      
17,116
      
18,820
      
18,624
      
21,401
      
30,995
      
29,582
      
24,001
  
(Loss) income from operations
    
(70,019
 )    
(18,884
 )    
(10,954
 )    
(13,377
 )    
(7,163
 )    
2,169
      
(313
 )    
(6,015
 )
Net (loss) income
    
(73,421
 )    
(19,084
 )    
(12,677
 )    
(14,859
 )    
(8,716
 )    
221
      
(1,722
 )    
(8,098
 )
Basic net (loss) income per share
   $
(1.91
 )   $
(0.49
 )   $
(0.33
 )   $
(0.39
 )   $
(0.23
 )   $
0.01
     $
(0.05
 )   $
(0.22
 )
Diluted net (loss) income per share
   $
(1.91
 )   $
(0.49
 )   $
(0.33
 )   $
(0.39
 )   $
(0.23
 )   $
0.01
     $
(0.05
 )   $
(0.22
 )