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Note 6 - Property and Equipment, Net (Tables)
9 Months Ended
Sep. 30, 2018
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
September 30,
2018
   
December 31,
2017
 
                 
                 
Land, building, and improvements
  $
8,980
    $
8,947
 
Machinery and equipment
   
5,683
     
5,577
 
Computer equipment
   
269
     
253
 
Office equipment, furnishings, and improvements
   
181
     
181
 
Total
   
15,113
     
14,958
 
Accumulated depreciation
   
(3,229
)    
(2,493
)
Total property and equipment, net
  $
11,884
    $
12,465