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Revenue Recognition (Tables)
 12 Months Ended
Dec. 31, 2020
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 assets, current; contract assets, non-current; deferred revenue, current; and deferred revenue, non-current (in thousands):
Accounts receivable, netContract assets, currentContract assets, non-currentDeferred revenue, currentDeferred revenue, non-current
Beginning balances as of January 1, 2020$689,134 $10,033 $31,521 $76,193 $46,555 
Closing balances as of December 31, 2020676,738 13,534 54,050 101,258 71,242 
Increase/(decrease)$(12,396)$3,501 $22,529 $25,065 $24,687 
Beginning balances as of January 1, 2019$630,119 $9,778 $16,396 $73,143 $46,641 
Closing balances as of December 31, 2019689,134 10,033 31,521 76,193 46,555 
Increase/(decrease)$59,015 $255 $15,125 $3,050 $(86)