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Inventories | 12 Months Ended
--- | ---
Dec. 31, 2023
Inventory Disclosure [Abstract] |
Inventories | Inventories Inventories are summarized as follows:
| December 31
| 2023 |  | 2022
Coal | $ | 23,784 |  |  | $ | 27,927 |
Mining supplies | 53,216 |  |  | 43,561 |
Total inventories | $ | 77,000 |  |  | $ | 71,488 |
The weighted average method is used for inventory valuation. During 2023, the Company recorded a $7.5 million inventory impairment charge in the line “Cost of sales” in the accompanying Consolidated Statements of Operations as mining costs exceeded net realizable value at MLMC.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 330 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//330/tableOfContent + Details
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