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Acquisition of Marshall Mine - Additional Information (Details) $ in Millions | Sep. 30, 2020 USD ($)
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Business Acquisition [Line Items] |
Reclamation reimbursements | $ 10.2
Marshall Mine |
Business Acquisition [Line Items] |
Membership interest | 100.00%
Capped cost | $ 19.7
Direct cost | $ 3.6
Estimated reclamation period | 10 years
Term of contract | 15 years
Marshall Mine | Cabot |
Business Acquisition [Line Items] |
Reclamation reimbursements | $ 10.2
Term of contract | 13 years

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Details
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- Details
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