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Net Sales - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 26, 2022	Jun. 27, 2021	Jun. 26, 2022	Jun. 27, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 109.5	$ 99.0	$ 206.5	$ 184.2
General industrial
Disaggregation of Revenue [Line Items]
Net sales	40.5	35.6	75.8	63.1
Transportation
Disaggregation of Revenue [Line Items]
Net sales	35.3	28.0	65.1	54.7
Defense, First Response & Healthcare
Disaggregation of Revenue [Line Items]
Net sales	33.7	35.4	65.6	66.4
Gas Cylinders
Disaggregation of Revenue [Line Items]
Net sales	46.1	46.5	88.5	82.7
Gas Cylinders | General industrial
Disaggregation of Revenue [Line Items]
Net sales	8.3	9.9	16.7	15.7
Gas Cylinders | Transportation
Disaggregation of Revenue [Line Items]
Net sales	19.1	16.1	36.0	31.0
Gas Cylinders | Defense, First Response & Healthcare
Disaggregation of Revenue [Line Items]
Net sales	18.7	20.5	35.8	36.0
Elektron
Disaggregation of Revenue [Line Items]
Net sales	63.4	52.5	118.0	101.5
Elektron | General industrial
Disaggregation of Revenue [Line Items]
Net sales	32.2	25.7	59.1	47.4
Elektron | Transportation
Disaggregation of Revenue [Line Items]
Net sales	16.2	11.9	29.1	23.7
Elektron | Defense, First Response & Healthcare
Disaggregation of Revenue [Line Items]
Net sales	$ 15.0	$ 14.9	$ 29.8	$ 30.4

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