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Property, plant and equipment, net
 12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Property, plant and equipment, net Property, plant and equipment, net
Property, plant and equipment, net consist of the following:
As of December 31,
20202021
Land $5,792 $7,292 
Buildings 41,622 41,282 
Furniture and fixtures 52,610 52,901 
Computer equipment and servers 270,376 309,551 
Plant, machinery and equipment 109,722 108,527 
Computer software 141,417 138,343 
Leasehold improvements126,761 114,747 
Vehicles 152 162 
Capital work in progress 44,011 45,647 
Property, plant and equipment, gross$792,463 $818,452 
Less: Accumulated depreciation, amortization and impairment(561,341)(603,363)
Property, plant and equipment, net$231,122 $215,089 
Depreciation expense on property, plant and equipment for the years ended December 31, 2019, 2020 and 2021 was $53,332, $67,662 and $62,159, respectively. Computer software amortization for the years ended December 31, 2019, 2020 and 2021 was $14,167, $9,421 and 5,842, respectively.
The depreciation and amortization expenses set forth above include the effect of the reclassification of foreign exchange (gains) losses related to the effective portion of foreign currency derivative contracts, amounting to $(267), $213 and $(430) for the years ended December 31, 2019, 2020 and 2021, respectively.
The Company recorded a write-down to computer software during the years ended December 31, 2020 and 2021 as described in Note 10.