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Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment PROPERTY, PLANT AND EQUIPMENT
Company's owned property, plant and equipment consists of the following at December 31:
 
2019
 
2018
Land
$
10,037

 
$
10,649

Building and improvements
152,336

 
148,055

Leasehold improvements
11,692

 
11,364

Machinery and equipment
586,327

 
584,490

 
760,392

 
754,558

Accumulated depreciation
(238,427
)
 
(205,537
)
 
521,965

 
549,021

Construction in process
62,612

 
41,702

Total
$
584,577

 
$
590,723


During 2019, the Company recorded impairment charges of $11,145 related to its New Boston biorefinery facility's property, plant and equipment assets. Refer to Note 2 for further details.