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Note 4 - Property (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   

June 30,

   

December 31,

 
   

2021

   

2020

 
   

(unaudited)

   

(audited)

 
   

(in thousands)

 

Land

  $ 5,072     $ 5,072  

Land improvements

    12,943       12,943  

Buildings

    22,892       23,465  

Machinery and equipment

    10,485       10,476  

Construction-in-progress

    22       -  

Total property

    51,414       51,956  

Less accumulated depreciation

    33,789       33,445  

Property, net

  $ 17,625     $ 18,511