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Property, Plant and Equipment, net (Tables)
3 Months Ended
Mar. 31, 2022
Property, Plant and Equipment [Abstract]  
Schedule of property, plant and equipment
        
   March 31,
2022
   December 31,
2021
 
Land  $1,565   $1,565 
Buildings and improvements   17,961    17,920 
Machinery and equipment   32,420    32,073 
Vehicles   640    640 
Office equipment   900    900 
Construction in process   378    417 
    53,864    53,515 
Less accumulated depreciation   (34,042)   (33,385)
Total property, plant and equipment, net  $19,822   $20,130