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Inventories | 12 Months Ended
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Dec. 31, 2021
Inventories |
Inventories | Note 6. Inventories Inventories consist of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
​ |  | 2021 |  | 2020
Raw materials | ​ | $ | 11,846 | ​ | $ | 7,544
Work-in-process | ​ | ​ | 670 | ​ | ​ | 227
Finished goods | ​ |  | 3,985 | ​ |  | 2,764
​ | ​ | $ | 16,501 | ​ | $ | 10,535
​ ​ The inventory balance at December 31, 2020 includes an $0.8 million step up in inventory related to the acquisition of MVE.

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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