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Provision for Environmental Liability (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Provision for Environmental Liability
Provision for environmental liability	$ 240	$ 240

X

- Definition

Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable after twelve months or beyond the next operating cycle if longer.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859

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-Name Accounting Standards Codification
-Topic 410
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-Paragraph 10
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-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13237-110859

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

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