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Other Charges (Notes)	12 Months Ended
	Dec. 31, 2019
Other Income and Expenses [Abstract]
Other Charges	Other charges The $2.5 million other charges incurred in 2019, is the result of the Company's decision to commence a project to remove low-level naturally occurring radioactive material (NORM) from a redundant building at Elektron's Manchester, UK site. The work represents remediation of a legacy environmental issue and is expected to complete in the second quarter of 2020, but with no significant further costs envisioned. The charge is being disclosed separately on the face of the condensed consolidated income statement as the NORM was created during the Company's historic production process and the remediation is not indicative of the current trading performance of the Company.

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The entire disclosure for other operating income and other operating expense items.

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