Revenue (Tables)

12 Months Ended

Dec. 31, 2024

Revenue

Schedule of revenue by discipline

	Year ended
	December 31,
	2024		2023		2022
	(in thousands)
Systems	$	782,559	$	883,604	$	692,061
Aftermarket		235,306		247,000		227,937
Total Revenue	$	1,017,865	$	1,130,604	$	919,998

Schedule of revenue by geographic markets

	Year ended
	December 31,
	2024		2023		2022
	(in thousands)
North America	$	144,066	$	174,810	$	143,701
Asia Pacific		781,039		811,308		673,752
Europe		92,760		144,486		102,545
Total Revenue	$	1,017,865	$	1,130,604	$	919,998

Schedule of Contract liabilities

	Year ended
	December 31,
	2024		2023		2022
	(in thousands)
Balance, beginning of the period	$	210,885	$	154,777	$	68,436
Deferral of revenue*		65,708		185,688		146,674
Recognition of deferred revenue		(138,419)		(129,580)		(60,333)
Balance, end of the period	$	138,174	$	210,885	$	154,777

* Amount is net of a reclassification of $12.7 million from deferred revenue to refund liability for the year ended December 31, 2024.