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Note 5 - Property and Equipment (Tables)
6 Months Ended
Jun. 30, 2018
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
June 30,
2018
   
December 30,
2017
 
Equipment and furniture
  $
691
    $
938
 
Computers and systems
   
6,503
     
6,172
 
Leasehold improvements
   
702
     
899
 
     
7,896
     
8,009
 
                 
Less: accumulated depreciation and amortization
   
4,637
     
4,563
 
                 
Property and equipment, net
  $
3,259
    $
3,446