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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment

 

  Note 10. Property, Plant and Equipment

 

Property, plant and equipment is comprised of the following:

 

   December 31,
2021
   December 31,
2020
 
Building  $61,383   $64,956 
Machinery and equipment   164,538    155,513 
Office equipment and software   7,278    7,041 
Vehicles   3,302    3,080 
Aircraft   9,545    - 
Furniture and fixtures   2,537    2,304 
Total property, plant and equipment   248,583    232,894 
Accumulated depreciation   (106,845)   (107,410)
Net book value of property and equipment   141,738    125,484 
Land   24,891    26,990 
Total property, plant and equipment, net  $166,629   $152,474 

 

Depreciation expense was $17,317 and $17,074 for the years ended December 31, 2021 and 2020, respectively.