Revenue - Revenue by discipline & geographical areas (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue
Total Revenue	$ 198,956	$ 192,563
North America
Disaggregation of Revenue
Total Revenue	22,767	40,525
Asia Pacific
Disaggregation of Revenue
Total Revenue	144,418	134,426
Europe
Disaggregation of Revenue
Total Revenue	31,771	17,612
Systems
Disaggregation of Revenue
Total Revenue	126,326	137,609
Aftermarket
Disaggregation of Revenue
Total Revenue	$ 72,630	$ 54,954