Property, Plant and Equipment

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

PROPERTY, PLANT AND EQUIPMENTCompany's owned property, plant and equipment consists of the following at December 31:

	2021		2020
Land	$	9,756	$	10,094
Building and improvements	175,252		157,488
Leasehold improvements	3,949		12,182
Machinery and equipment	641,919		636,269
	830,876		816,033
Accumulated depreciation	(292,759)		(273,003)
	538,117		543,030
Construction in process	139,327		51,766
Total	$	677,444	$	594,796

During 2021, the Company recorded impairment charges of $7,359, related to certain biodiesel property, plant and equipment as the carrying amounts of these assets were deemed not recoverable given the assets' deteriorating physical conditions identified during the period.

During 2020, the Company recorded impairment charges of $18,984 related to certain equipment where it was determined that the assets will no longer be used in future RD production expansions and their carrying amount was deemed not recoverable. In addition, the Company recorded impairment charges of $3,420 against certain biodiesel property, plant and equipment as the carrying amounts of these assets were deemed not recoverable given the assets' economic obsolescence identified during the period.