Revenue Recognition

12 Months Ended

Dec. 31, 2022

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Revenue Recognition

The following table summarizes disaggregated revenue information by geographic area based on the customer's country of domicile (in thousands):

	Year Ended December 31,
	2022		2021		2020
Americas	$	390,573	$	435,220	$	310,027
Europe	234,643		247,744		208,787
Greater China	227,447		200,135		168,287
Other Asia	153,427		153,999		123,919
	$	1,006,090	$	1,037,098	$	811,020

The following table summarizes disaggregated revenue information by revenue type (in thousands):

	Year Ended December 31,
	2022		2021		2020
Standard products and services	$	848,153	$	889,253	$	674,830
Application-specific customer solutions	157,937		147,845		136,190
	$	1,006,090	$	1,037,098	$	811,020

Costs to Fulfill a Contract

Costs to fulfill a contract are included in "Prepaid expenses and other current assets" on the Consolidated Balance Sheets and amounted to $14,578,000 and $10,854,000 as of December 31, 2022 and 2021, respectively.

Accounts Receivable, Contract Assets, and Contract Liabilities

Accounts receivable represent amounts billed and currently due from customers which are reported at their net estimated realizable value. The Company maintains an allowance against its accounts receivable for credit losses. Contract assets consist of unbilled revenue which arises when revenue is recognized in advance of billing for primarily certain application-specific customer solutions contracts. Contract liabilities consist of deferred revenue and customer deposits which arise when amounts are billed to or collected from customers in advance of revenue recognition.

The following table summarizes changes in the allowance for credit losses (in thousands):

	Amount
Balance as of December 31, 2020	$	831
Increases to the allowance for credit losses	—
Write-offs, net of recoveries	(55)
Foreign exchange rate changes	—
Balance as of December 31, 2021	776
Increases to the allowance for credit losses	191
Write-offs, net of recoveries	(237)
Foreign exchange rate changes	—
Balance as of December 31, 2022	$	730

The following table summarizes the deferred revenue and customer deposits activity (in thousands):

	Amount
Balance as of December 31, 2020	$	21,274
Deferral of revenue billed in the current period, net of recognition	31,907
Recognition of revenue deferred in prior period	(17,403)
Foreign exchange rate changes	(35)
Balance as of December 31, 2021	35,743
Deferral of revenue billed in the current period, net of recognition	39,076
Recognition of revenue deferred in prior period	(31,520)
Foreign exchange rate changes	(2,512)
Balance as of December 31, 2022	$	40,787

As a practical expedient, the Company has elected not to disclose the aggregate amount of the transaction price allocated to unsatisfied performance obligations, as our contracts have an original expected duration of less than one year.