Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 26, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Committed and uncommitted banking facilities The Company had committed banking facilities of $100.0 million at September 26, 2021 and $150.0 million at December 31, 2020. Of these committed facilities, nil was drawn at September 26, 2021 and $4.1 million was drawn at December 31, 2020. The current banking facilities are due to expire July 31, 2022, however, a new facility is expected to be signed on October 26, 2021. See Note 16 for additional information. The Company had a separate (uncommitted) facility for letters of credit which at September 26, 2021 was £1.0 million ($1.4 million) and December 31, 2020 was £1.0 million ($1.3 million). None of these were utilized at September 26, 2021 and December 31, 2020, respectively. The Company also has two separate (uncommitted) bonding facilities for bank guarantees, one denominated in GBP sterling of £4.5 million (2021: $6.2 million, 2020: $6.1 million), and one denominated in USD of $1.5 million (2020: $1.5 million). Of that dominated in GBP, £0.6 million ($0.8 million) and £1.0 million ($1.4 million) was utilized at September 26, 2021, and December 31, 2020, respectively. Of that denominated in USD, $0.9 million was utilized at September 26, 2021 and $0.8 million was utilized at December 31, 2020. The Company also has a $4.0 million separate overdraft facility of which none was drawn at September 26, 2021 and at December 31, 2020. The Company has various uncommitted transitional banking and foreign exchange lines available for day-to-day operational purposes. 15. Commitments and Contingencies (continued) Contingencies During February 2014, a cylinder was sold to a long-term customer and ruptured at one of their gas facilities. As a result of this rupture, three people were noted to have injuries such as loss of hearing. There was no major damage to assets of the customer. A claim has been launched by the three people who were injured in the incident. We have reviewed our quality control checks from around the time which the cylinder was produced and no instances of failures have been noted. As a result we do not believe that we are liable for the incident, and therefore, do not currently expect this case to have a material impact on the Company's financial position or results of operations. In November 2018, an explosion occurred at a third-party waste disposal and treatment site in Boise, Idaho, allegedly causing property damage, personal injury, and one fatality. We had contracted with a service company for removal and disposal of certain waste resulting from the magnesium powder manufacturing operations at the Reade facility in Manchester, New Jersey. We believe this service company, in turn, apparently contracted with the third-party disposal company, at whose facility the explosion occurred, for treatment and disposal of the waste. In November 2020, we were named as a defendant in three lawsuits in relation to the incident – one by the third-party disposal company, one by the estate of the decedent, and one by an injured employee of the third-party disposal company. At present, we have received insufficient information on the cause of the explosion. We do not believe that we are liable for the incident, have asserted such, and, therefore, do not currently expect this matter to have a material impact on the Company’s financial position or results of operations.