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Revenue Recognition (Tables)
 12 Months Ended
Dec. 31, 2018
Revenue from Contract with Customer [Abstract]  
Contract Balances, Opening and Closing Balances
The following table summarizes the opening and closing balances of the Company's accounts receivable, net; contract asset, current; contract asset, non-current; deferred revenue, current; and deferred revenue, non-current (in thousands):
 
Accounts receivable, net
 
Contract asset, current
 
Contract asset, non-current
 
Deferred revenue, current
 
Deferred revenue, non-current
Beginning balances as of January 1, 2018 (1)
$
576,313

 
$
9,002

 
$
16,186

 
$
71,085

 
$
53,101

Closing balances as of December 31, 2018
630,119

 
9,778

 
16,396

 
73,142

 
46,641

Increase/(decrease)
$
53,806

 
$
776

 
$
210

 
$
2,057

 
$
(6,460
)
 
(1) 
Includes cumulative adjustments made to these accounts on January 1, 2018 from the adoption of Topic 606.