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Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 29, 2020 | Mar. 31, 2019
Disaggregation of Revenue [Line Items] |  |
Net sales | $ 103.8 | $ 120.4
General industrial |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 39.6 | 43.7
Transportation |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 30.1 | 40.0
Defense and emergency |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 29.5 | 29.2
Healthcare |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 4.6 | 7.5
Gas Cylinders segment |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 52.6 | 58.4
Gas Cylinders segment | General industrial |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 11.9 | 13.1
Gas Cylinders segment | Transportation |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 18.9 | 20.9
Gas Cylinders segment | Defense and emergency |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 18.1 | 18.7
Gas Cylinders segment | Healthcare |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 3.7 | 5.7
Elektron segment |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 51.2 | 62.0
Elektron segment | General industrial |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 27.7 | 30.6
Elektron segment | Transportation |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 11.2 | 19.1
Elektron segment | Defense and emergency |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 11.4 | 10.5
Elektron segment | Healthcare |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | $ 0.9 | $ 1.8

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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