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Note 5 - Property and Equipment (Tables)
 3 Months Ended
Mar. 30, 2019
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
March 30,
2019
    
December 29,
2018
  
Computers and systems
   $
6,038
     $
7,200
  
Equipment and furniture
    
520
      
600
  
Leasehold improvements
    
467
      
743
  
     
7,024
      
8,543
  
                 
Less: accumulated depreciation and amortization
    
3,753
      
5,058
  
                 
Property and equipment, net
   $
3,271
     $
3,485