Revenue (Tables)

9 Months Ended

Sep. 30, 2020

Revenue from Contract with Customer [Abstract]

Summary of Total Receivables, Net

Total receivables, net is comprised of the following (in thousands):

	September 30, 2020		December 31, 2019
Billed receivables	$	168,973	$	213,654
Allowance for doubtful accounts	(3,517)		(5,149)
Billed receivables, net	165,456		208,505
Accrued receivables	380,300		399,302
Significant financing component	(30,375)		(35,569)
Total accrued receivables, net	349,925		363,733
Less: current accrued receivables	154,665		161,714
Less: current significant financing component	(10,625)		(11,022)
Total long-term accrued receivables, net	205,885		213,041
Total receivables, net	$	515,381	$	572,238

Summary of Changes in Deferred Revenue

Changes in deferred revenue were as follows (in thousands):

Balance, December 31, 2019	$	118,939
Deferral of revenue	108,976
Recognition of deferred revenue	(96,379)
Foreign currency translation	(252)
Balance, September 30, 2020	$	131,284