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Revenue - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disaggregation of Revenue [Line Items]      
Revenue $ 405.0 $ 423.4 $ 374.1
General industrial      
Disaggregation of Revenue [Line Items]      
Revenue 118.4 155.5 129.2
Transportation      
Disaggregation of Revenue [Line Items]      
Revenue 119.3 132.9 117.0
Defense, First Response & Healthcare      
Disaggregation of Revenue [Line Items]      
Revenue 167.3 135.0 127.9
Gas Cylinders      
Disaggregation of Revenue [Line Items]      
Revenue 186.4 183.7 178.3
Gas Cylinders | General industrial      
Disaggregation of Revenue [Line Items]      
Revenue 32.0 34.0 33.4
Gas Cylinders | Transportation      
Disaggregation of Revenue [Line Items]      
Revenue 70.6 77.8 71.2
Gas Cylinders | Defense, First Response & Healthcare      
Disaggregation of Revenue [Line Items]      
Revenue 83.8 71.9 73.7
Elektron      
Disaggregation of Revenue [Line Items]      
Revenue 187.1 201.0 155.7
Elektron | General industrial      
Disaggregation of Revenue [Line Items]      
Revenue 54.9 82.8 55.7
Elektron | Transportation      
Disaggregation of Revenue [Line Items]      
Revenue 48.7 55.1 45.8
Elektron | Defense, First Response & Healthcare      
Disaggregation of Revenue [Line Items]      
Revenue 83.5 63.1 54.2
Graphic Arts      
Disaggregation of Revenue [Line Items]      
Revenue 31.5 38.7 40.1
Graphic Arts | General industrial      
Disaggregation of Revenue [Line Items]      
Revenue 31.5 38.7 40.1
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