Accounts Receivable

9 Months Ended

Sep. 30, 2022

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

Accounts Receivable

Accounts Receivable

Net accounts receivable consisted of the following as of September 30, 2022 and December 31, 2021 (in thousands):

 

	September 30, 2022		December 31, 2021
Trade accounts receivable	$	445,844	$	501,959
Unbilled accounts receivable	178,637		175,364
Gross accounts receivable	624,481		677,323
Allowances for current expected credit losses and other reserves	(2,454)		(1,397)
Accounts receivable, net	$	622,027	$	675,926

A summary of activity in the accounts receivable allowance for current expected credit losses and other reserves for the nine months ended September 30, 2022 and 2021 is as follows (in thousands):

	September 30, 2022		September 30, 2021
Beginning balance	$	1,397	$	1,822
Charges to income from operations	4,470		3,510
Collections from customers previously reserved and other	(3,413)		(3,064)
Ending balance	$	2,454	$	2,268

Charges to income from operations primarily represents charges to provision for doubtful accounts for increases in the allowance for current expected credit losses.