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Business and Basis of Presentation (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Mar. 01, 2022	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Idle mine		$ 1,715	$ 10,876	$ 4,723	$ 10,876
Business interruption		$ 6,290	$ 7,020	$ 12,978	$ 7,020
BWM & BWT
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Payments to acquire equity method investments	$ 300
BWM
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Ownership interest in equity method investment (as a percent)	50.00%
BWT
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Ownership interest in equity method investment (as a percent)	50.00%

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- Definition

Business Interruption

+ References

No definition available.

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- Definition

Idle Mine Expense

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585

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