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Net Sales - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 25, 2022	Sep. 26, 2021	Sep. 25, 2022	Sep. 26, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 100.2	$ 91.2	$ 306.7	$ 275.4
General industrial
Disaggregation of Revenue [Line Items]
Net sales	38.0	29.2	113.8	92.3
Transportation
Disaggregation of Revenue [Line Items]
Net sales	29.2	31.1	94.3	85.8
Defense, First Response & Healthcare
Disaggregation of Revenue [Line Items]
Net sales	33.0	30.9	98.6	97.3
Gas Cylinders
Disaggregation of Revenue [Line Items]
Net sales	43.4	45.6	131.9	128.3
Gas Cylinders | General industrial
Disaggregation of Revenue [Line Items]
Net sales	7.0	7.6	23.7	23.3
Gas Cylinders | Transportation
Disaggregation of Revenue [Line Items]
Net sales	17.9	19.7	53.9	50.7
Gas Cylinders | Defense, First Response & Healthcare
Disaggregation of Revenue [Line Items]
Net sales	18.5	18.3	54.3	54.3
Elektron
Disaggregation of Revenue [Line Items]
Net sales	56.8	45.6	174.8	147.1
Elektron | General industrial
Disaggregation of Revenue [Line Items]
Net sales	31.0	21.6	90.1	69.0
Elektron | Transportation
Disaggregation of Revenue [Line Items]
Net sales	11.3	11.4	40.4	35.1
Elektron | Defense, First Response & Healthcare
Disaggregation of Revenue [Line Items]
Net sales	$ 14.5	$ 12.6	$ 44.3	$ 43.0

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