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Note 5 - Property and Equipment (Tables)
 3 Months Ended
Mar. 28, 2020
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
March 28,
2020
    
December 28,
2019
  
Computers and systems
   $
4,852
     $
5,628
  
Equipment and furniture
    
275
      
319
  
Leasehold improvements
    
203
      
308
  
     
5,330
      
6,255
  
                 
Less: accumulated depreciation and amortization
    
2,837
      
3,538
  
                 
Property and equipment, net
   $
2,493
     $
2,717