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Note 5 - Property and Equipment (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
December 31,
2016
    
January 2,
2016
  
Equipment and furniture
   $
1,045
     $
2,358
  
Computers and systems
    
5,521
      
6,119
  
Leasehold improvements
    
804
      
752
  
     
7,370
      
9,229
  
                 
Less: accumulated depreciation and amortization
    
3,318
      
4,531
  
                 
Property and equipment, net
   $
4,052
     $
4,698