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INVENTORIES | 12 Months Ended
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Dec. 31, 2023
INVENTORIES |
INVENTORIES | NOTE 4 - INVENTORIES
| a. | Inventories at December 31, 2022 and 2023 consisted of the following:
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
(U.S. dollars in thousands) | ​ | 2022 | ​ | 2023
Raw materials | ​ | $ | 3,508 | ​ | $ | 4,176
Work in progress | ​ |  | 2,678 | ​ | ​ | 9,055
Finished goods | ​ |  | 10,618 | ​ | ​ | 5,814
Total inventory | ​ | $ | 16,804 | ​ | $ | 19,045
​ b. During the years ended December 31, 2021, 2022 and 2023, the Company recorded approximately $0.4 million, $0.04 million and $0.8 million, respectively, for write-down of inventory under cost of goods sold.

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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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