Accounts Receivable (Tables)

6 Months Ended

Jun. 30, 2020

Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]

Schedule of Accounts Receivable

Net accounts receivable consisted of the following as of June 30, 2020 and December 31, 2019 (in thousands):

	June 30, 2020		December 31, 2019
Trade accounts receivable	$	482,451	$	396,204
Unbilled accounts receivable	168,433		157,619
Gross accounts receivable	650,884		553,823
Allowances for current expected credit losses and other reserves	(6,225)		(1,880)
Accounts receivable, net	$	644,659	$	551,943

Summary of Allowance for Credit Loss Activity

The following table summarizes the activity of the Company's allowance for current expected credit losses and other reserves during the six months ended June 30, 2020 (in thousands):

Balance as of January 1, 2020	$	1,880
Charges to income from operations	7,523
Collections from customers previously reserved and other	(3,178)
Balance as of June 30, 2020	$	6,225