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INVENTORY | 12 Months Ended
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Dec. 31, 2023
INVENTORY |
INVENTORY | 3. INVENTORY Inventories, net of reserves, consisted of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
(in thousands) |  | 2023 |  | 2022
Chassis | ​ | $ | 29,748 | ​ | $ | 18,604
Raw materials | ​ |  | 89,048 | ​ |  | 75,934
Work in process | ​ |  | 47,934 | ​ |  | 40,655
Finished goods | ​ |  | 23,077 | ​ |  | 18,463
Total inventory | ​ | $ | 189,807 | ​ | $ | 153,656
​ For the years ended December 31, 2023 and 2022, inventories presented in the consolidated balance sheets are net of inventory reserves of $5.6 million and $5.9 million, respectively. The Company did not recognize any impairment of inventory.

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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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