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Property, Plant and Equipment
 9 Months Ended
Sep. 30, 2021
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Property, Plant and Equipment
The components of Property, plant and equipment, net are as follows:
(in thousands)September 30,
2021		December 31,
2020		September 30,
2020
Land$39,159 $39,704 $39,705 
Land improvements and leasehold improvements89,941 92,455 92,138 
Buildings and storage facilities368,678 379,195 375,715 
Machinery and equipment920,232 898,557 881,617 
Construction in progress24,556 19,473 20,936 
1,442,566 1,429,384 1,410,111 
Less: accumulated depreciation 644,906 569,073 539,960 
Property, plant and equipment, net$797,660 $860,311 $870,151 

Depreciation expense on property, plant and equipment used in continuing operations was $97.7 million and $91.4 million for the nine months ended September 30, 2021 and 2020, respectively. Additionally, depreciation expense on property, plant and equipment used in continuing operations was $35.2 million and $30.8 million for the three months ended September 30, 2021 and 2020, respectively.

During the quarter ended September 30, 2021, the Company sold its grain assets in Champaign, Illinois plus working capital for $23.3 million which resulted in a $14.6 million gain.