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Inventories | 9 Months Ended
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Sep. 30, 2023
Inventories |
Inventories | Note 11. Inventories ​ Inventories consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31, |
​ | ​ | 2023 | ​ | 2022 |
​ | ​ | (in thousands) |
Raw materials and supplies |  | $ | 55,180 |  | $ | 47,607 | ​
Work in process | ​ |  | 28,293 | ​ |  | 37,090 | ​
Finished goods | ​ |  | 26,505 | ​ |  | 18,887 | ​
Total inventories | ​ | $ | 109,978 | ​ | $ | 103,584 | ​
​ ​ ​ Charges of $9.6 million were included in the cost of revenues in the Company’s condensed consolidated statements of operations for the nine months ended September 30, 2023, to adjust the Company’s inventory and related firm purchase commitments to their net realizable value. For the three and nine months ended September 30, 2022, charges of $5.5 million and $14.1 million were included in the cost of revenues, respectively, to adjust the Company’s inventory and related firm purchase commitments to their net realizable value. ​ Losses on firm purchase commitments related to raw materials on order as of September 30, 2023 and December 31, 2022 were $0.7 million and $2.7 million, respectively, which are recorded in cost of revenues in the Company’s condensed consolidated statement of operations.

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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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