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Note 3 - Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2018
Notes to Financial Statements  
Property, Plant and Equipment Disclosure [Text Block]
3.
     
Property, Plant and Equipment
   
Depreciable
                
   
lives
  
(in thousands)
  
   
(in years)
  
201
8
    
2017
  
Computers and equipment
  
 3
to
7
  
$
7
     $
-
  
Furniture and fixtures
  
 5
to
7
  
 
3
      
-
  
Property, plant and equipment, at cost
  
 
 
 
  
 
10
      
-
  
Less accumulated depreciation
  
 
 
 
  
 
1
      
-
  
Property, plant and equipment, net
  
 
 
 
  
$
9
     $
-
  
                         
Property, plant and equipment, net, of discontinued operations
  
 
 
 
  
$
-
     $
1,449