Accounts Receivable and Allowance for Expected Credit Losses

12 Months Ended

Dec. 31, 2021

Allowance For Doubtful Accounts And Unbilled Services [Abstract]

Accounts Receivable and Allowance for Expected Credit Losses

Accounts Receivable and Allowance for Expected Credit Losses

The following table summarizes the components of “Accounts receivable, net” as presented on the Consolidated Balance Sheets:

	December 31,
	2021		2020
Accounts receivable:
Billed receivables	$	542,056	$	513,459
Unbilled receivables	248,681		236,285
Allowance for expected credit losses	(36,617)		(38,387)
Accounts receivable, net	$	754,120	$	711,357

The following table summarizes total provision for expected credit losses and write-offs:

	Year Ended December 31,
	2021		2020		2019
Provision for expected credit losses	$	16,151	$	19,692	$	19,602
Write-offs	$	23,641	$	24,717	$	12,734

Our provision for expected credit losses includes recoveries, direct write-offs and charges to other accounts. Billed accounts receivables are written off when the potential for recovery is considered remote. See Note 1, "Description of Business and Summary of Significant Accounting Policies” for additional information on our accounting policies for revenue recognition and allowance for expected credit losses.