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Note 5 - Property and Equipment (Tables)
 12 Months Ended
Jan. 02, 2021
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
January 2,
2021
    
December 28,
2019
  
Equipment and furniture
   $
264
     $
319
  
Computers and systems
    
4,686
      
5,628
  
Leasehold improvements
    
236
      
308
  
     
5,185
      
6,255
  
                 
Less: accumulated depreciation and amortization
    
3,107
      
3,538
  
                 
Property and equipment, net
   $
2,078
     $
2,717