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Note 3 - Property and Equipment, Net (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Property, Plant and Equipment [Table Text Block]
 
 
December 31
,
2016
 
 
December 31,
2015
 
                 
Leasehold improvements
   $
114
     $
114
  
Furniture and fixtures
    
314
      
373
  
Machinery and equipment
    
1,039
      
1,329
  
     
1,467
      
1,816
  
Less accumulated depreciation and amortization
    
(1,181
)
    
(1,370
)
Property and equipment, net
   $
286
     $
446