REVENUE FROM CONTRACTS WITH CUSTOMERS

9 Months Ended

Sep. 30, 2023

Revenue from Contract with Customer [Abstract]

REVENUE FROM CONTRACTS WITH CUSTOMERS

REVENUE FROM CONTRACTS WITH CUSTOMERS

The Company assesses revenues based upon the nature or type of goods or services it provides and the geographic location of the related businesses. The following tables present disaggregated revenue information:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Single wafer cleaning, Tahoe and semi-critical cleaning equipment	$	132,417	$	99,720	$	281,559	$	198,336
ECP (front-end and packaging), furnace and other technologies	25,508		24,521		71,223		57,269
Advanced packaging (excluding ECP), services & spares	10,644		9,468		34,620		24,685
Total Revenue By Product Category	$	168,569	$	133,709	$	387,402	$	280,290

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Mainland China	$	168,302	$	131,180	$	375,528	$	273,585
Other regions	267		2,529		11,874		6,705
	$	168,569	$	133,709	$	387,402	$	280,290

Below are the accounts receivables and contract liabilities balances as of:

	September 30, 2023		December 31, 2022
Accounts receivable	$	248,477	$	182,936
Advances from customers	191,393		153,773
Deferred revenue	4,747		4,174

During the nine months ended September 30, 2023, advances from customers increased by $37.6 million, due to an increase of payments made by customers for first tools under evaluation, and an increase in customer pre-payments for tools prior to delivery.