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Note 5 - Property and Equipment (Tables)
 3 Months Ended
Apr. 01, 2017
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
April 1,
2017
    
December 31,
2016
  
Equipment and furniture
   $
886
     $
1,045
  
Computers and systems
    
5,416
      
5,521
  
Leasehold improvements
    
804
      
804
  
     
7,106
      
7,370
  
                 
Less: accumulated depreciation and amortization
    
3,343
      
3,318
  
                 
Property and equipment, net
   $
3,763
     $
4,052