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Revenue - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disaggregation of Revenue [Line Items]      
Revenue $ 391.9 $ 405.0 $ 423.4
General industrial      
Disaggregation of Revenue [Line Items]      
Revenue 107.5 118.4 155.5
Transportation      
Disaggregation of Revenue [Line Items]      
Revenue 112.5 119.3 132.9
Defense, First Response & Healthcare      
Disaggregation of Revenue [Line Items]      
Revenue 171.9 167.3 135.0
Gas Cylinders      
Disaggregation of Revenue [Line Items]      
Revenue 186.3 186.4 183.7
Gas Cylinders | General industrial      
Disaggregation of Revenue [Line Items]      
Revenue 30.3 32.0 34.0
Gas Cylinders | Transportation      
Disaggregation of Revenue [Line Items]      
Revenue 67.6 70.6 77.8
Gas Cylinders | Defense, First Response & Healthcare      
Disaggregation of Revenue [Line Items]      
Revenue 88.4 83.8 71.9
Elektron      
Disaggregation of Revenue [Line Items]      
Revenue 176.0 187.1 201.0
Elektron | General industrial      
Disaggregation of Revenue [Line Items]      
Revenue 47.6 54.9 82.8
Elektron | Transportation      
Disaggregation of Revenue [Line Items]      
Revenue 44.9 48.7 55.1
Elektron | Defense, First Response & Healthcare      
Disaggregation of Revenue [Line Items]      
Revenue 83.5 83.5 63.1
Graphic Arts      
Disaggregation of Revenue [Line Items]      
Revenue 29.6 31.5 38.7
Graphic Arts | General industrial      
Disaggregation of Revenue [Line Items]      
Revenue 29.6 31.5 38.7
Graphic Arts | Transportation      
Disaggregation of Revenue [Line Items]      
Revenue 0.0 0.0 0.0
Graphic Arts | Defense, First Response & Healthcare      
Disaggregation of Revenue [Line Items]      
Revenue $ 0.0 $ 0.0 $ 0.0