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Property, Plant and Equipment, Net
9 Months Ended
Sep. 30, 2013
Property, Plant and Equipment, Net

8. Property, plant and equipment, net

Property, plant and equipment, net consist of the following:

 

     As of December 31,
2012
    As of September 30,
2013
 

Property, plant and equipment, gross

   $ 513,540      $ 486,112   

Less: Accumulated depreciation and amortization

     (313,178     (317,738
  

 

 

   

 

 

 

Property, plant and equipment, net

   $ 200,362      $ 168,374   
  

 

 

   

 

 

 

Depreciation expense on property, plant and equipment for the nine months ended September 30, 2012 and 2013 was $33,754, and $35,164, respectively, and for the three months ended September 30, 2012 and 2013 was $11,332 and $11,747, respectively. The amount of computer software amortization for the nine months ended September 30, 2012 and 2013 was $8,840, and $7,541, respectively, and for the three months ended September 30, 2012 and 2013 was $2,881 and $2,438, respectively.

The above depreciation and amortization expense includes the effect of reclassification of foreign exchange (gains) losses related to the effective portion of foreign currency derivative contracts amounting to $985 and $2,435 for the nine months ended September 30, 2012 and 2013, respectively, and $750 and $1,233 for the three months ended September 30, 2012 and 2013, respectively.