Derivatives - Schedule of price risk derivatives (Details) T in Thousands	3 Months Ended
Mar. 31, 2023 T
2023 \| Coal sales
Derivative [Line Items]
Derivatives held (in tons)	26

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.

No definition available.

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