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Property, plant and equipment, net
 3 Months Ended
Mar. 31, 2023
Property, Plant and Equipment [Abstract]  
Property, plant and equipment, net Property, plant and equipment, net
 
The following table provides the gross and net amount of property, plant and equipment:
 
As of December 31, 2022As of March 31, 2023
Property, plant and equipment, gross$766,365 $770,830 
Less: Accumulated depreciation and amortization (585,607)(591,575)
Property, plant and equipment, net$180,758 $179,255 
 
Depreciation expense on property, plant and equipment for the three months ended March 31, 2022 and 2023 was $14,530 and $12,717, respectively. Computer software amortization for the three months ended March 31, 2022 and 2023 was $1,317 and $689, respectively.