Revenue - Revenue by discipline & geographical areas (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue
Total Revenue	$ 192,563	$ 252,372
North America
Disaggregation of Revenue
Total Revenue	40,525	45,503
Asia Pacific
Disaggregation of Revenue
Total Revenue	134,426	188,217
Europe
Disaggregation of Revenue
Total Revenue	17,612	18,652
Systems
Disaggregation of Revenue
Total Revenue	137,609	195,432
Aftermarket
Disaggregation of Revenue
Total Revenue	$ 54,954	$ 56,940

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details