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Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2023
Dec. 31, 2022
Disaggregation of Revenue        
Deferred revenue $ 208,418 $ 210,885 $ 201,725 $ 154,777
Short-term deferred revenue 164,700 164,677    
Long-term deferred revenue $ 43,718 $ 46,208    
Systems        
Disaggregation of Revenue        
Payment upon shipment of the system, as a percent 90.00%      
Payment upon acceptance, as a percent 10.00%      
Systems | Minimum        
Disaggregation of Revenue        
Pre-shipment deposit, as a percent 20.00%      
Systems | Maximum        
Disaggregation of Revenue        
Pre-shipment deposit, as a percent 60.00%      
Aftermarket | Minimum        
Disaggregation of Revenue        
Payment upon delivery of parts, period 30 days      
Aftermarket | Maximum        
Disaggregation of Revenue        
Payment upon delivery of parts, period 60 days