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v3.25.3

Revenue (Tables) | 9 Months Ended
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Sep. 30, 2025
Revenue |
Schedule of revenue by discipline | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Nine months ended
​ | ​ | September 30, | ​ | September 30,
​ | ​ | 2025 | ​ | 2024 | ​ | 2025 | ​ | 2024
​ | ​ | (in thousands)
Systems | ​ | $ | 143,668 | ​ | $ | 201,037 | ​ | $ | 414,564 | ​ | $ | 595,114
Aftermarket | ​ | ​ | 69,943 | ​ | ​ | 55,527 | ​ | ​ | 186,154 | ​ | ​ | 170,334
Total Revenue | ​ | $ | 213,611 | ​ | $ | 256,564 | ​ | $ | 600,718 | ​ | $ | 765,448
Schedule of revenue by geographic markets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Nine months ended
​ | ​ | September 30, | ​ | September 30,
​ | ​ | 2025 | ​ | 2024 | ​ | 2025 | ​ | 2024
​ | ​ | (in thousands)
North America | ​ | $ | 29,161 | ​ | $ | 32,950 | ​ | $ | 103,909 | ​ | $ | 112,826
Asia Pacific | ​ | ​ | 161,352 | ​ | ​ | 202,377 | ​ | ​ | 441,405 | ​ | ​ | 586,754
Europe | ​ | ​ | 23,098 | ​ | ​ | 21,237 | ​ | ​ | 55,404 | ​ | ​ | 65,868
Total Revenue | ​ | $ | 213,611 | ​ | $ | 256,564 | ​ | $ | 600,718 | ​ | $ | 765,448
Schedule of Contract liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
​ | ​ | 2025 | ​ | 2024
​ | ​ | (in thousands)
Contract liabilities | ​ | $ | 128,920 | ​ | $ | 138,174
​ | ​ | ​ | ​ | ​ | ​ | ​
Contract liabilities are reflected as deferred revenue on the consolidated balance sheets and include payments received in advance of system sales as well as deferral of revenue from systems sales for installation and other future performance obligations. Contract liabilities are recognized as revenue upon the fulfillment of performance obligations. ​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Nine months ended
​ | ​ | September 30, |  | September 30,
​ | ​ | 2025 | ​ | 2024 | ​ | 2025 | ​ | 2024
​ | ​ | (in thousands)
Balance, beginning of the period | ​ | $ | 129,742 | ​ | $ | 174,011 | ​ | $ | 138,174 | ​ | $ | 210,885
Deferral of revenue | ​ | ​ | 27,991 | ​ | ​ | 31,544 | ​ | ​ | 48,740 | ​ | ​ | 69,938
Other adjustments * | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (2,272) | ​ | ​ | (4,716)
Recognition of deferred revenue | ​ | ​ | (28,813) | ​ | ​ | (41,529) | ​ | ​ | (55,722) | ​ | ​ | (112,081)
Balance, end of the period | ​ | $ | 128,920 | ​ | $ | 164,026 | ​ | $ | 128,920 | ​ | $ | 164,026
​ * Adjustment to contracts with customers are assessed to determine if amounts paid by customers represent deferred revenue or liabilities payable to customers and such amounts are accordingly reclassified pursuant to our revenue recognition policy and ASC 606.

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 + Details
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