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Note 5 - Property and Equipment (Tables)
 9 Months Ended
Sep. 29, 2018
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
September 29,
2018
    
December 30,
2017
  
Computers and systems
   $
7,133
     $
6,172
  
Equipment and furniture
    
600
      
938
  
Leasehold improvements
    
693
      
899
  
     
8,426
      
8,009
  
                 
Less: accumulated depreciation and amortization
    
4,732
      
4,563
  
                 
Property and equipment, net
   $
3,694
     $
3,446