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Note 4 - Property and Equipment, Net (Tables)
 12 Months Ended
Dec. 31, 2019
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
At December 31,
  
(In thousands)
  
2019
    
2018
  
Land
   $
395
     $
382
  
Buildings
    
4,117
      
3,976
  
Leasehold improvements
    
109
      
109
  
Equipment
    
1,274
      
1,357
  
Property and equipment, gross
    
5,895
      
5,824
  
Less accumulated depreciation
    
(1,441
)
    
(1,284
)
Property and equipment, net
   $
4,454
     $
4,540