Accounts Receivable

3 Months Ended

Mar. 31, 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 March 31, 2022 and December 31, 2021 (in thousands):

 

	March 31, 2022		December 31, 2021
Trade accounts receivable	$	511,584	$	501,959
Unbilled accounts receivable	210,488		175,364
Gross accounts receivable	722,072		677,323
Allowances for current expected credit losses and other reserves	(3,279)		(1,397)
Accounts receivable, net	$	718,793	$	675,926

A summary of activity in the accounts receivable allowance for current expected credit losses and other reserves for the three months ended March 31, 2022 and 2021 is as follows (in thousands):

	March 31, 2022		March 31, 2021
Beginning balance	$	1,397	$	1,822
Charges to income from operations	1,951		923
Collections from customers previously reserved and other	(69)		(1,091)
Ending balance	$	3,279	$	1,654

Charges to income from operations primarily represents charges to bad debt expense for increases in the allowance for current expected credit losses.