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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

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