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Employee Benefit Plans - Narrative (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2022
USD ($)
age
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
UNITED STATES      
Defined contribution pension plan      
Employer match, contributions $ 0.3 $ 0.3 $ 0.3
Foreign Plan      
Defined contribution pension plan      
Required rate of return under Belgian law, employer contributions 1.80%    
Required rate of return under Belgian law, employee contributions 1.80%    
Benefit rights vests upon statutory retirement age | age 62    
Accumulated benefit obligation $ 16.8 $ 22.9  
Expected employer contributions over the next twelve months $ 1.0