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Property, plant and equipment, net (Tables)
3 Months Ended
Mar. 31, 2020
Property Plant And Equipment [Abstract]  
Property, plant and equipment, net

 

The following table provides the gross and net amount of property, plant and equipment:

 

 

 

As of December 31,

 

 

As of March 31,

 

 

 

2019

 

 

2020

 

Property, plant and equipment, gross

 

$

744,161

 

 

$

728,319

 

Less: Accumulated depreciation and amortization

 

 

(490,126

)

 

 

(482,519

)

Property, plant and equipment, net

 

$

254,035

 

 

$

245,800