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Inventory | 12 Months Ended
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Dec. 31, 2023
Inventory |
Inventory | 4.Inventory Inventory consisted of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31,
(in thousands) | ​ | 2023 | ​ | 2022
Raw materials | ​ | $ | 12,975 | ​ | $ | 10,262
Work in process | ​ |  | 82,588 | ​ |  | 86,712
Finished goods | ​ |  | 34,537 | ​ |  | 18,077
Total | ​ | $ | 130,100 | ​ | $ | 115,051
​ During 2023, the Company recorded a $47.0 million charge for the write-down of slow moving YUSIMRY inventory, inclusive of the related partial recognition of $20.5 million in certain firm purchase commitments in cost of goods sold in the consolidated statements of operations. The Company has presented the partial recognition of these certain firm purchase commitments in the amounts of $11.5 million and $9.0 million in accrued and other current liabilities and other liabilities, non-current, respectively, in the consolidated balance sheets as of December 31, 2023. Inventory expected to be sold more than twelve months from the balance sheet date is classified as inventory, non-current in the consolidated balance sheets. As of December 31, 2023 and 2022, the non-current portion of inventory consisted of raw materials, work in process and a portion of finished goods. The following table presents the inventory balance sheet classifications: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31,
(in thousands) | ​ | 2023 | ​ | 2022
Inventory | ​ | $ | 62,605 | ​ | $ | 38,791
Inventory, non-current | ​ |  | 67,495 | ​ |  | 76,260
Total | ​ | $ | 130,100 | ​ | $ | 115,051
​ Prepaid manufacturing of $23.7 million as of December 31, 2023 includes prepayments of $12.6 million to CMOs for manufacturing services of the Company’s products, which the Company expects to be converted into inventory during 2024, and prepayments of $11.1 million to various CMOs for research and development pipeline programs. Prepaid manufacturing of $17.9 million as of December 31, 2022 included prepayments of $13.0 million to CMOs for manufacturing services of the Company’s products and prepayments of $4.9 million to various CMOs for research and development pipeline programs. ​ In February 2021, the Company announced the discontinuation of the development of CHS-2020, a biosimilar of Eylea as part of a realignment of research and development resources toward other development programs. As a result, the Company recognized $11.2 million within research and development expense in the consolidated statements of operations in 2021, which included an impairment charge of $3.2 million for the write-off of prepaid manufacturing services no longer deemed to have future benefits. No material expense relating to the discontinuation of CHS-2020 was recognized after March 31, 2021.

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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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