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Inventory | 9 Months Ended
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Sep. 30, 2025
Inventory Disclosure [Abstract] |
Inventory | Note 9—Inventory Inventory consists of raw materials and spare parts, work in process and finished goods and is stated at the lower of cost (first-in, first-out) or net realizable value. The Company evaluates inventory balances for excess quantities and obsolescence by analyzing estimated demand, inventory on hand, sales levels and other information and reduces inventory balances to net realizable value for excess and obsolete inventory based on this analysis. Inventory as of December 31, 2024 and September 30, 2025 consisted of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | September 30,
​ | ​ | 2024 | ​ | 2025
Raw materials and spare parts | ​ | $ | 43,434 | ​ | $ | 44,421
Total inventory | ​ | $ | 43,434 | ​ | $ | 44,421
​ ​

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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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