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Revenue (Tables)
9 Months Ended
Sep. 30, 2018
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue
The following table presents our revenues disaggregated by geographical area:
 
Americas
 
EMEA
 
Asia-Pacific
 
Total
For the three months ended
(in thousands)
 
 
 
 
 
 
 
 
September 30, 2017
$
228,326

 
$
207,168

 
$
128,479

 
$
563,973

September 30, 2018
$
211,247

 
$
195,230

 
$
122,392

 
$
528,869

 
Americas
 
EMEA
 
Asia-Pacific
 
Total
For the nine months ended
(in thousands)

 
 
 
 
 
 
 
September 30, 2017
$
665,731

 
$
587,942

 
$
368,988

 
$
1,622,661

September 30, 2018
$
636,723

 
$
618,921

 
$
374,574

 
$
1,630,218